The Kynix Components

TL082 is an Op Amp IC. In detail, it is a high speed JFET input dual operational amplifier. High speed, low cost, this device comes with an internal trimmed offset voltage. It is available with a fast slew rate, a large bandwidth gain, and a low power supply.This blog provides you with a basic overview of the TL082 op-amp, including its pin descriptions, functions and specifications, producers, etc., to help you quickly understand what TL082 is. If this blog can be helpful to you, we will be very honored. Of course, if you have any questions, do not hesitate to leave your comments.Circuits: Magnet Motion Detector using TL082 Op-AmpCatalogTL082 PinoutTL082 CircuitTL082 ApplicationsTL082 FeaturesTL082 AdvantageTL082 PackageTL082 ParametersTL082 ManufacturerTL082 DocumentsComponent DatasheetFAQTL082 Pinout TL082 CircuitSchematic for Inverting Amplifier Application100-kHz Quadrature OscillatorTL082 Functional Block DiagramTL082 Applications• Solar energy: string and central inverter• Motor drives: AC and servo drive control and power stage modules• Single phase online UPS• Three phase UPS• Pro audio mixers• Battery test equipmentTL082 Features• Wide common-mode Rejection ratio of 70dB to 86dB and wide voltage supply range• A low input bias current• Less Power Requirement• Internal frequency compensation• Supply current is 1.4mA which is very low• Low offset current• No requirement of a latch• High input impedance JFET input stage• Short-circuit protection for output• A large gain bandwidth of 3MHz• High input impedance• Slew rate is high typically 16 V/µs• Operating temperature range is from –55 °C to +125 °CTL082 AdvantageTL082 Op Amp• The TL082 is a high-speed, low-cost, wide-bandwidth dual JFET input operational amplifier.• The component has an internally trimmed offset voltage. It has a fast slew rate and low supply current.• This JFET input device can be extended with low offset and input bias currents.• The TL082 is electrically compatible with the LM1558 and is used to improve the overall performance of the LM1558 device.• With high input impedance and low total harmonic distortion, this device features low noise and offset voltage drift.• The amplifier is widely used in audio preamplifiers, sample-and-hold amplifiers and peak detectors, and active filters.TL082 PackagePDIP (P)SO (PS)SOIC (D)TSSOP (PW)TL082 ParametersNumber of channels (#)2Total supply voltage (Max) (+5V=5, +/-5V=10)30Total supply voltage (Min) (+5V=5, +/-5V=10)7Rail-to-railIn to V+GBW (Typ) (MHz)3Slew rate (Typ) (V/us)13Vos (offset voltage @ 25 C) (Max) (mV)6Iq per channel (Typ) (mA)1.4Vn at 1 kHz (Typ) (nV/rtHz)18RatingCatalogOperating temperature range (C)-40 to 85, 0 to 70Offset drift (Typ) (uV/C)18FeaturesStandard AmpsInput bias current (Max) (pA)200CMRR (Typ) (dB)86Output current (Typ) (mA)10ArchitectureFETTL082 ManufacturerTexas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. Its headquarters are in Dallas, Texas, United States. TI is one of the top ten semiconductor companies worldwide, based on sales volume. Texas Instruments’ focus is on developing analog chips and embedded processors, which accounts for more than 80% of their revenue. TI also produces TI digital light processing (DLP) technology and education technology products including calculators, microcontrollers and multi-core processors. To date, TI has more than 43,000 patents worldwide.TL082 DocumentsWhat is an op amp?How to lay out a PCB for high-performance, low-side current-sensing designsCompensation Methodology for Error in SK Low-Pass Filter, Caused by Limited GBW Component DatasheetTL082 DatasheetFAQWhat is TL082?Op Amp IC What type of amplifier does TL082 come with?High speed JFET input dual operational amplifier What is the TL082 compatible with?LM1558 What does the TL082 have?Fast slew rate and low supply current

As we all know, switching regulated power supplies are widely used in electronic equipment due to their small size, lightweight, and high conversion efficiency. However, this type of power supply is only suitable for occasions where the output voltage is fixed or the range of change is small. Therefore, this paper proposes a series switching power supply composed of a monolithic switching regulator LM2576  -ADJ instead of a linear regulator. In addition to the advantages of a wide range of linear power supplies, the power supply efficiency is greatly improved. The maximum output power of this circuit is about 75w, the voltage adjustment range is 1.23V~25V, and the output current can reach 3A.Catalog I. Circuit ConfigurationII. Principle Analysis2.1 Voltage Stabilizing Circuit2.2 Voltage Adjustment Circuit2.3 Voltage Display CircuitIII. Overall CircuitIV. ConclusionFAQOrdering & Quantity I.Circuit ConfigurationThe whole circuit is composed of four parts: a step-down rectifier circuit, a voltage stabilizing circuit, a numerical control circuit, and a digital display circuit. Its circuit block diagram is shown in Figure 1.Figure 1. System block diagramII.Principle Analysis 2.1 Voltage Stabilizing Circuit The voltage stabilizing part of this circuit uses LM2576. In order to generate different output voltages, the negative terminal of the comparator is usually connected to a reference voltage  (1.23V), and the positive terminal is connected to a voltage divider resistor network. The output voltage through the voltage divider resistor network is compared with the internal reference voltage of 1.23V. If there is a deviation in the voltage, an amplifier can be used to control the output duty cycle of the internal oscillator to keep the output voltage stable. Its typical application circuit is shown in Figure 2.Figure 2. Typical application circuit with adjustable output voltageIn the figure, +V1N is the voltage input terminal. The 4 pins of the regulator control terminal are connected to the voltage divider circuit composed of potentiometer W and resistor R. Changing W can change the voltage division ratio and adjust the output voltage. The relationship between the output voltage Vout and R1 and R2 is Uo=UREF(1+R2/R1), and the reference voltage  UREF of the voltage regulator sampling circuit is 1.23V.The choice of inductance L1 should be based on the LM2576 output voltage, maximum input voltage, maximum load current, and other parameters. First, calculate the voltage·microsecond constant (E·T) according to the following formula:In the above formula, Vin is the maximum input voltage of LM2576.  Vout is the output voltage of LM2576, and f is the operating oscillation frequency value of LM2576  (52KHz). After E·T is determined, you can refer to the corresponding voltage·microsecond constant and load current graph to find the required inductance value, as shown in Figure 3.Figure 3. Curves of voltage·microsecond constant and load currentIn this circuit, Vin=28V, Vout=25V, so according to the formula:It can be seen from the figure that according to the maximum load current selection, the value of the inductance L should be 68μH. CIN is the input filter capacitor, which should generally be greater than or equal to 100μF. It is required to be as close as possible to the input pin of LM2576 during installation, and its withstand voltage value should match the maximum input voltage value. COUT is the filter capacitor at the output end, and the capacitor should be valued according to the following formula:Where Vin is the maximum input voltage of LM2576, Vout is the output voltage of LM2576, and L is the value of inductance L1 selected by calculation and lookup table. The withstand voltage value of capacitor C should be greater than 1.5 to 2 times the rated output voltage. Diode D1 selects the Schottky diode of the MBR360 series. 2.2 Voltage Adjustment Circuit The voltage adjustment part of this circuit uses the electronic potentiometer X9511 as the voltage adjustment unit. Its typical application diagram is shown in Figure 4. X9511 contains 31 series resistance arrays and 32 shaft heads. The position of the shaft head is controlled by two buttons and can be stored in the internal EEPROM memory for recalling when the power is turned on next time, and the shaft head position is automatically restored. Voltage adjustment circuit diagram, see Figure 5.Figure 4. Typical application diagram of X9511Figure 5. Voltage adjustment circuitAccording to the application principle of LM2576-ADJ, its output voltage Uo=(1+R/R2), where R can choose a digitally controlled potentiometer composed of IC3 (X9511, 50K), UREF=1.23V, Uo=UOMAX=25V, and so:That is, the value of R2 is about 2.6KΩ. From the above analysis, we can see that the voltage adjustment range of this circuit is approximate as follows:When R is 0Ω：When R is 50KΩ: 2.3 Voltage Display Circuit In this unit, we use a voltage display circuit composed of MAX1496. Its working power supply is a single power supply from 2.7V to 5.25V. The typical application circuit is shown in Figure 6, and the voltage display circuit is shown in Figure 7.Figure 6. M-AXI496 typical application circuitFigure 7. Using the resistance divider method to extend the rangeThe RANGE pin is a rate selection pin. Since the displayed voltage range is 1.23V~25V, and its range is up to 2V, if you want to display the voltage correctly, you should expand its range to 200V. To expand the range, you can use the resistor divider method. Add a voltage divider circuit as shown in figure 7 between AIN+ and AIN1 of the MAX1496. According to the resistance value in the figure, it can be calculated that the range has been expanded by 100 times， that is 200V. At this time, the maximum voltage of 200V is measured, and after the voltage is divided by the voltage divider circuit, the full-scale voltage of 200V×0.01=2V can be obtained.DPSET1 and 2 pins set the display position of the decimal point for display in different ranges. The specific settings and effects are shown in Table 1. Because the full-scale display in this circuit is 200V, the first setting format in the table can be selected, and its display resolution is 0.1.DPSET1DPSET2DISPLAY OUTPUTZEROINPUT READING00188.80.00118.880.001018880111.8880.000X＝Don’t care.Table 1. MAX1496 decimal point display settingsThe HOLD and PEAK pins are the setting bits for data retention and peak display, and their specific settings and effects are shown in Table 2. The first is the latched state, which is used to save the measured value; the second is the peak display mode, which is used to display the highest value measured. In this example, you can choose the last way to display the latest results.HOLDPEAKDISPLAY VALUES FORM1XHold value01Peak value00Latest ADC resultX＝Don’t care.Table 2. MAX1496 display mode settingMAX1496 adopts the dynamic display mode of bit segment scanning, its display scanning frequency reaches 640Hz, the display is stable and clear, and the power consumption is greatly reduced compared with a static display. In this design, the commonly used four-digit scanning LED display can be used. III.Overall Circuit The overall circuit is shown in Figure 8. After the commercial power is stepped down by the transformer T, the bridge rectifier circuit  D1 and the filter circuit formed by the capacitor C1 convert the low-voltage AC into a DC voltage of about 30V. One of this voltage is sent to the voltage of IC2 (LM2576). At the input end, the other way sends a +5V power circuit composed of VT1, D2, and IC1 (LM7805) as the working power supply for IC3 (X9511) and JC4 (MAX1496).Figure 8. System diagramIV. ConclusionThis article summarizes the design scheme of a digitally controlled adjustable switching power supply based on LM2576.  which has the advantages of simple circuit, reliable, high conversion efficiency, and low price. Only a few components in the circuit can form a switching regulator with a supply current of 3A. When the circuit is used for lighter loads, LM2576 does not need to install a radiator, which not only saves equipment space but also reduces heat loss. After actual testing, its performance indicators can fully meet general needs, it is the best substitute for the popular three-terminal linear regulator.FAQWhere is LM2576 used?LM2576 is usually used as a voltage stabilizing device when the input and output voltage difference is large and the output current is also large. Because it is a switching regulator, it has a higher conversion efficiency and low heat generation than a linear regulator.What’s the difference between LM2576T-ADJ and LM2576S-ADJ?LM2576T-ADJ is the package of TO-220, LM2576S-ADJ is the package of TO-263-5, there is no difference in their functions.What is the difference between LM2940 and LM2576? Which circuit are they applicable to?LM2940 is a low-dropout linear stabilized integrated circuit. The linear stabilized power supply is characterized by a relatively simple circuit, high precision, and small ripple coefficient. It is suitable for precision power supplies with high voltage requirements. The disadvantage is that the efficiency is very low and the output The current is relatively small (relative to the switching power supply)LM2576 is a switching power supply integrated circuit. Switching power supply, the circuit is more complicated, but the output current is large, the efficiency is high, the disadvantage is that the accuracy is lower and the ripple coefficient is larger.Why do switching power supply chips LM2576 and LM2596 have diodes, inductors and capacitors behind the output pins?The function of the diode and the inductance is that the output current can be continuous when the LM25XX is in the off state, and the function of the capacitor is to prevent the output voltage from sudden changes when the LM25XX is turned on and off. In fact, it is filtering.Why the higher the switching frequency of LM2576 and LM2596, the smaller the output inductance and capacitance value?Quite simply, the capacitive reactance of a capacitor decreases as the frequency increases, and the inductance of an inductor increases as the frequency increases. That is to say, the effect of using an inductance of 33uH in the case of 150Khz is basically the same as the effect of using an inductance of 100uH in the case of 52khz, and the principle of capacitance is the same. LM2596 is an upgraded version of LM2576. But LM2576 also has the advantage of less switching loss and less interference.

UC3842 is a fixed frequency current-mode PWM controller. This IC is specially designed for Off-Line and DC to DC converter applications with minimum external components. This blog will provide you the detailed information of UC3845, the PWM controller about its pinout, features, applications, equivalents, where and how to use this device, etc.CatalogUC3842 PinoutUC3842 FeaturesUC3842 ParametersUC3842 Absolute Maximum RatingsUC3842 Functional Block DiagramUC3842 EquivalentsWhere to use UC3842 ICHow to use UC3842 ICUC3842 ApplicationsUC3842 PackageComponent DatasheetUC3842 Pinout Note: UC3842 IC also comes in 14-Pin, 16-Pin, and 20-Pin packages. This article covers only the 8-Pin version of the IC.Pin NumberPin NameDescription1COMP (Comparator)It is an output pin that outputs low impedance 1MHz signal, based on the difference between the set and current-voltage. It is normally connected to the voltage feedback pin of the IC through a resistor and capacitor.2VFB (Voltage Feedback)It is an input to the error amplifier inside the IC. The difference in voltage level is supplied to this pin3Current SenseA shunt resistor is used to monitor the current through the circuit, and the voltage across it is provided as a feedback to the current sense pin4RT/CT (Timing Resistor/ Timing Capacitor)The IC has an internal oscillator which can be set using an external resistor and capacitor connected to this pin.5GroundConnected to the ground of the circuit6OutputThis pin outputs the PWM signal based on the feedback provided and we can use this to switch the power electronic device.7VccSupply voltage for the IC (Nominal 11V)8VREFReference voltage based on which the PWM signal is produced.UC3842 FeaturesOptimized for off-line and DC-to-DC convertersLow start-up current (< 1 mA)Automatic feedforward compensationPulse-by-pulse current limitingEnhanced load-response characteristicsUndervoltage lockout with hysteresisDouble-pulse suppressionHigh-current totem-pole outputInternally trimmed bandgap referenceUp to 500-kHz operationError amplifier with low output resistanceUC3842 ParametersTopologyBoost, Buck, Buck-Boost, Flyback, ForwardControl methodPeak Current ModeVCC (Min) (V)16VCC (Max) (V)28Duty cycle (Max) (%)100UVLO thresholds on/off (V)16/10Frequency (Max) (kHz)500Operating temperature range (C)0 to 70Gate drive (Typ) (A)1FeaturesAdjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topologyRatingCatalogUC3842 Absolute Maximum RatingsUC3842 Functional Block DiagramUC3842 Functional Block Diagram (Toggle)UC3842 EquivalentsPart NumberDescriptionManufacturerUC3842ANG4 POWER CIRCUITS30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 100% duty cycle, 0°C to 70°C 8-PDIP 0 to 70Texas InstrumentsUC3842N POWER CIRCUITS1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, MINI, DIP-8STMicroelectronicsCS-3842BN8 POWER CIRCUITSSwitching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8,Cherry Semiconductor CorporationIP3842AJ POWER CIRCUITS1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, CDIP8, CERAMIC, DIP-8TT Electronics Power and Hybrid / Semelab LimitedUC3842AN POWER CIRCUITS1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8Motorola Mobility LLCUC3842AN2 POWER CIRCUITS1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8ON SemiconductorUC3842BNG POWER CIRCUITSHigh Performance Current Mode PWM Controller, 8 LEAD PDIP, 50-TUBEON SemiconductorCS3842BGN8 POWER CIRCUITS1A SWITCHING CONTROLLER, PDIP8, 0.300 INCH, PLASTIC, MS-001, DIP-8ON SemiconductorUC3842NG4 POWER CIRCUITSSingle ended 500KHz current mode PWM controller with 16V/10V UVLO 100% duty cycle, 0C to 70C 8-PDIP 0 to 70Texas InstrumentsWhere to use UC3842 ICThe UC3842 IC is a current mode PWM controller, which means that it can be used to provide constant current by varying the output voltage to the load. This IC features a trimmed oscillator for precise duty cycle control, a temperature-compensated reference, a high gain error amplifier, a current sensing comparator, and a high current totem pole output for power MOSFET operation. UC3842 can be used to regulate or limit current in applications such as SMPS, RPS, DC-DC Converters, Line voltage regulators, etc. So if you're looking for an IC to produce PWM signals to control a power switch based on the current flowing through the circuit, this IC might be the right choice for you.How to use UC3842 ICIt’s pretty simple to use UC3842 in a circuit. Down below is a sample circuit diagram from UC3845 datasheet.UC3842 Application Circuit The input voltage for the VCC pin should be 12V to 28V. The output pin of the IC is connected to the gate conductor circuit of the power switch to be switched. The VFB (Voltage Feedback) pin acts as feedback on the basis of which the PWM signal is controlled. The shunt resistor is used to monitor the current change in the circuit, and then this voltage difference over the shunt is provided to the feedback pin. VREF is used to provide charging current through the timing resistor to the oscillator timing capacitor. It is important for reference stability that VREF is routed to GROUND with a ceramic capacitor connected as close to the pin as possible.UC3842 ApplicationsSMPS (Switch Mode Power Supplies) circuitsDC-DC converter circuitsElectronics power supplyBattery drain circuitLoad machinesUC3842 PackageComponent DatasheetUC3842 DatasheetFAQHow does UC3842 work?The use of the UC3842 in a circuit is fairly straightforward because it only requires a few components. The IC's output pin is connected to the gate driver circuit of the to-be-switched Power switch. The VFB (Voltage feedback) pin serves as feedback for controlling the PWM signal. What is UC3842?UC 843 is basically a current mode Pulse Width Modulation (PWM) controller having fixed frequency.

The LM2940 is a common low-dropout (LDO) linear regulator.  This is a comprehensive introduction to the LM2940 voltage regulator, from its pinout, feature, parameter to its application, its difference between LM7805, and more.CatalogLM2940 DescriptionLM2940 PinoutLM2940 FeaturesLM2940 ParametersLM2940 EquivalentLM2940 VS LM7805LM2940 Typical ApplicationLM2940 PackageLM2940 ApplicationComponent DatasheetFAQLM2940 DescriptionThe LM2940  is a common low-dropout (LDO) linear regulator,   The dropout voltage of a regulator is the voltage required between the input and the regulated output voltage. The regulator wastes this voltage (multiplied by current), so the lower the dropout on a linear regulator.  the more efficient it is. This means that the LM2940.  with a 5V dropout at 1 amp, can be used with a 6-volt wall wart to provide a regulated 5V output. This also means that the regulator will operate at a much lower temperature than a standard 7805, which would require a much higher input voltage (around 7.5 volts) for a regulated 5V output.LM2940 PinoutLM2940 voltage regulatorLM2940 Pinout Pin No.Pin NameDescription1VinA (+ve) voltage is given as input to this pin.2GNDCommon to both Input and Output.3VoutOutput regulated 12V is taken at this pin of the IC.LM2940 FeaturesInput Voltage Range = 6 V to 26 VDropout Voltage Typically 0.5 V at IOUT = 1 AOutput Current in Excess of 1 AOutput Voltage Trimmed Before AssemblyReverse Battery ProtectionInternal Short Circuit Current LimitMirror Image Insertion ProtectionP+ Product Enhancement TestedLM2940 ParametersOutput optionsFixed OutputIout (Max) (A)1Vin (Max) (V)26Vin (Min) (V)6Vout (Max) (V)15Vout (Min) (V)5Fixed output options (V)5, 8, 9, 10, 12, 15Noise (uVrms)150Iq (Typ) (mA)10Thermal resistance θJA (°C/W)23Load capacitance (Min) (µF)22RatingCatalogRegulated outputs (#)1Features-Accuracy (%)2PSRR @ 100 KHz (dB)48Dropout voltage (Vdo) (Typ) (mV)500Operating temperature range (C)-40 to 125, -40 to 85LM2940 Equivalent The equivalent for LM2940 is LM7805.LM2940 VS LM7805 The LM7805  is a popular linear voltage regulator because it requires no additional components to operate. It is a very low-cost component. Because of its characteristics, it reduces the output voltage at the expense of heat dissipation, making it inefficient. The LM7805  requires a minimum input voltage of 7.3V to function properly. It can handle a maximum current of 1A. Some models can handle up to 1.5A. It is recommended, and in some cases required, to use capacitors to reduce or eliminate the effects of the frequencies introduced by the other elements of the circuit. They also help to reduce the impact of peak consumption. While the LM2940  is from a different generation, but its pin is still compatible with the LM7805,   It is a Low-dropout (LDO) Linear Regulator that is more efficient than the LM7805.  but it will require capacitors. The main difference between LM2940  and LM7805  is that the maximum output current of LM2940  is 1A. The maximum output current of LM7805  is 1.5A. Others are very close, so if the circuit only requires 1A or below, LM2940  can be used instead of LM7805,   What's more, the 7805 is expending the excess power as heat. This is very lossy especialy if your project uses batteries. The other chip is a buck converter  is so it approaches 90% efficiency by switching so there is no waste heat, that's why even though LM7805  is cheaper and easier to use but there are still a lot of people who would go for LM2940. LM2940 & LM7805 Schematic ComparisonLM2940 SchematicLM7805 SchematicLM2940 Typical ApplicationLM2940 PackageLM2940 ApplicationPost regulator for switching suppliesLogic power SuppliesIndustrial InstrumentationComponent Datasheet LM2940 DatasheetFAQWhat type of linear regulator is the LM2940?Low-dropout What can the LM2940 be used with to provide a regulated 5V output?A 6 volt wall wart What is the minimum input voltage for the LM7805?7.3V What is the maximum current of the LM7805?1A What is the purpose of the LM7805?To reduce or eliminate the effects of the frequencies introduced by the other elements of the circuit What does the LM7805 help to do?Reduce the impact of peak consumption What is the LM2940?Low-dropout (LDO) Linear Regulator What is the difference between LM2940 and LM7805?The maximum output current of LM2940 is 1A. The maximum output current of LM7805 is 1.5A.

Mini MP1584 3A is a small size adjustable buck module.CatalogMP1584EN Description MP1584EN PinoutPin Configuration of MP1584 DC-DC Buck ModuleCAD ModelAlternatives for MP1584 DC-DC Buck ModuleProduct AttributesFeaturesApplicationsFunctional circuit for MP1584 DC-DC Buck ModuleProduct ComplianceMP1584EN DatasheetFAQ MP1584EN Description The MP1584EN is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 3A output with current mode control for fast loop response and easy compensation.The wide 4.5V to 28V input range accommodates a variety of step-down applications, including those in an automotive input environment. A 100µA operational quiescent current allows use in battery-powered applications.How to Use a Simple DC-DC Step Down Module MP1584EN Pinout MP1584EN Pinout   Pin Configuration of MP1584 DC-DC Buck ModuleThe MP1584 buck module is small in size and has only input and output pins. The module also consists of an output adjustable potentiometer. The table below shows the pin configuration of the MP1584 buck module.Pin TypePin DescriptionIN +Positive Input Voltage TerminalIN -Negative Input Voltage TerminalOUT +Positive Output Voltage TerminalOUT -Negative Output Voltage Terminal Note: The onboard potentiometer can be used to regulate the output voltage; it boosts up the output voltage when rotated clockwise whereas, bucks the output voltage when rotated counter-clockwise. CAD Model Symbol  Footprint Alternatives for MP1584 DC-DC Buck ModuleLM2576, LM2596, TPS613223ADBVT, XL7015  Product AttributesProduct Attributes TYPEDESCRIPTIONCategoriesIntegrated Circuits (ICs) PMIC - Voltage Regulators - DC DC Switching RegulatorsManufacturerMonolithic Power Systems Inc.Series-PackagingCut Tape (CT)Part StatusNot For New DesignsFunctionStep-DownOutput ConfigurationPositiveTopologyBuckOutput TypeAdjustableNumber of Outputs1Voltage - Input (Min)4.5VVoltage - Input (Max)28VVoltage - Output (Min/Fixed)0.8VVoltage - Output (Max)25VCurrent - Output3AFrequency - Switching100kHz ~ 1.5MHzSynchronous RectifierNoOperating Temperature-20°C ~ 85°C (TA) C54Mounting TypeSurface MountPackage / Case8-SOIC (0.154", 3.90mm Width) Exposed PadSupplier Device Package8-SOICEBase Part NumberMP1584  FeaturesWide 4.5V to 28V Operating Input RangeProgrammable Switching Frequency from 100kHz to 1.5MHzHigh-Efficiency Pulse Skipping Mode for Light LoadCeramic Capacitor StableInternal Soft-StartInternally Set Current Limit without a Current Sensing ResistorAvailable in SOIC8E Package.  ApplicationsHigh Voltage Power ConversionAutomotive SystemsIndustrial Power SystemsDistributed Power SystemsBattery Powered Systems  Functional circuit for MP1584 DC-DC Buck Module MP1584EN Circuit  Some of the reference pins of the MP1584 IC from the circuit above are discussed. The FREQ(Frequency pin) pin on the IC decides the switching frequency. Connecting a resistor from it to the ground can be used to set the switching frequency. The EN(Enable pin) is used to control the chip’s ON/OFF state. The FB(Feedback pin) is the input for the error amplifier. The output voltage is set by a voltage divider(Potentiometer in the module) across output and ground. Product ComplianceUSHTS:8542390001CAHTS:8542390090CNHTS:8542319000JPHTS:854239099MXHTS:8542399901TARIC:8542399000ECCN:EAR99 MP1584EN DatasheetMP1584EN Datasheet FAQWhat is mp1584en?The MP1584 is a high-frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 3A output with current mode control for fast loop response and easy compensation. A 100µA operational quiescent current allows use in battery-powered applications. What is a dc/dc buck converter?The buck converter is a very simple type of DC-DC converter that produces an output voltage that is less than its input. The buck converter is so named because the inductor always “bucks” or acts against the input voltage. ... When the switch is opened the supply current to the inductor is suddenly interrupted. What does a boost converter do?The boost converter is used to "step-up" an input voltage to some higher level, required by a load. This unique capability is achieved by storing energy in an inductor and releasing it to the load at a higher voltage.  

CR2430 battery is non-rechargeable lithium 3.0 volts battery with a typical capacity of 270-300 mAh and physical dimensions of 24.5 x 3.0 mm. This blog would cover CR2430's feature, specification, its comparison with CR2450 and much more.CatalogCR2430 DescriptionCR2430 FeaturesCR2430 SpecificationsWhat are Coin BatteriesCR2430 EquivalentCR2430 vs CR2450CR2430 DimensionCR2430 ApplicationComponent DatasheetFAQCR2430 DescriptionCR2430 batteries are non-rechargeable Lithium Manganese Dioxide (LiMnO2) button/coin-cell batteries, featuring physical dimensions of (D x H) 24.5 x 3.0 mm (~0.9646 x 0.1181 inches). CR2430 batteries feature a nominal voltage of 3.0 volts, a cutoff voltage of 2.0 volts, and nominal capacity of ~270-320 mAh - as usual with the batteries, actual capacity depends on the battery age, storage temperature, drain conditions (current, temperature), and similar. The standard discharge current of CR2430 batteries is ~0.2 mA, while pulse current depends on the pulse length, but generally, it is in the 7-15 mA range.CR2430 FeaturesLightweight, High Voltage and High Energy DensityThe battery voltage is 3V, almost double that of normal alkaline or manganese batteries. This means that the number of batteriesrequired for equipment can be halved for maximum space saving and weight reduction. Excellent Discharge CharacteristicsVoltage characteristics remain stable even for a long period of discharge, greatly improving the reliability of equipment that usesthe battery. Such equipment is also maintenance-free (battery replacement is seldom required). Excellent Leakage ResistanceThe newly developed battery construction and electrolyte ensure maximum leakage resistance over a long span of time. Excellent Long-Term ReliabilityCarefully selected active materials are used for the active material as well as for the electrolyte. These materials are sealed byMurata's innovative technology to minimize battery self-discharge. The annual self-discharge rate at room temperature and normalhumidity is less than 1% of the nominal capacity. UL Approved PartsMurata's Coin Manganese Dioxide Lithium Batteries are approved by UL. (UL1642 File No. MH12566) RoHS Directive / European DirectivesThis product does not contain Mercury(Hg), Cadmium(Cd), nor Lead(Pb), and conforms to EC regulation values. (Directive2006/66/EC, 2013/56/EU) Battery packs are excluded from RoHS directive (DIRECTIVE 2011/65/EU OF THE  EUROPEAN PARLIAMENT  AND OF THE COUNCIL of 8 June 2011 on the restriction of the use of certain.CR2430 SpecificationsBattery typeCoin Manganese Dioxide Lithium BatteriesNominal Voltage3.0V Nominal Capacity300 mAh Standard Discharge Current0.2 mAOperating Temperature Range-30℃ to 70℃Diameter (inch)0.965 inchDiameter (mm)24.5 mmHeight (inch)0.118 inchHeight (mm)3 mmIEC (JIS)CR2430 Mass (oz)0.155 ozMass (g)4.4gWhat are Coin Batteriescoin batteriesCoin batteries are commonly known as button cells. A watch battery or button cell is a small single cell battery shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high — resembling a button. Stainless steel usually forms the bottom body and positive terminal of the cell. An insulated top cap is a negative terminal. Coin batteries are commonly used in garage door openers, medical devices, watches, remote controls, and greeting cards with sound. Do not leave these devices readily available and make sure children are supervised when in contact with them so that access to coin batteries can be prevented.CR2430 EquivalentThe CR2430 battery is also a replacement for equivalent batteries:CR2430, DL2430, BR2430, KL2430, L2430, ECR2430, 5011LC, L20, KCR2430, E-CR2430, KECR2430, LF1/2WCR2430 vs CR2450CR2450CR2450 is commonly used in watches, computer motherboards, medical devices, LED flashlights, toys, remote controls, remote car keys, security systems, wearable electronics, etc. Compared to smaller 3.0V lithium batteries, the CR2450  is a large and powerful battery with a large capacity and is often used in 'high' drain devices. The CR2450 battery has a diameter of 24 mm (~0.945 inches) and a height of 5.0 mm (~0.197 inches) and a weight range of 5.7-6.3+ grams (0.2-0.222+ ounces). The CR2430 battery is a non-rechargeable lithium 3.0 volt battery with a typical capacity of 270-300 mAh and dimensions of 24.5 x 3.0 mm. As can be seen, the CR2430 battery may fit into the battery compartments designed for CR2450  batteries, but contacts may cause problems. Furthermore, the CR2430 has much lower capacity and drain currents, which may cause certain devices to malfunction. To summarize, do not replace the CR2450  battery with the CR2430 battery unless absolutely necessary and at your own risk!CR2430 DimensionCR2430 ApplicationAutomotive・Smart Key/Keyless entry・Door sill strip IoT・Tracking devices・Sensors・Security Medical・Thermometers Others・Home electrical appliances/Multi- functional printer・Electronic price tags, POS systemsComponent DatasheetCR2430 DatasheetFAQAre CR2450 and CR2430 interchangeable?Non-rechargeable 3.0 volts lithium CR2430, CR2450, CR2477 batteries feature the same diameter of 24 mm (~0.945 inches), but different height of 3.0, 5.0 and 7.7 mm (~0.118, 0.197 and 0.303 inches) respectively.What are 2430 batteries used for?They are popular because they deliver Ideal Temperature Resistance and Superior Storage capacity. CR2430 Lithiums in particular are commonly used in the following applications: Watches, Pagers, Calculators, PDA Organizers (electronic agendas), lights and other electronic devices.Is DL2430 same as CR2430?Duracell DL2430 batteries are fully interchangeable with all CR2430 batteries.What battery is equivalent to CR2430?CR2025 and CR2032 batteries can sometimes be used in place of each other, even though CR2025 batteries are slightly thinner. There is no true substitute for a CR2430 battery, and they represent a somewhat unique size in the battery world.What does LiMnO2 stand for?Lithium Manganese DioxideWhat is the nominal voltage of CR2430 batteries?3.0 voltsWhat type of equipment is used for battery replacement?Maintenance-freeCoin batteries are commonly known as what?Button cellsWhat type of metal usually forms the bottom body and positive terminal of the cell?Stainless steel