MSK5101-00
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MSK5101-00

Product Category: IC Chips
Manufacturer: MSK
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  datasheetMSK5101-00 Datasheet
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Manufacturer: MSK
Product Category: IC Chips
Features, Applications

4707 Dey Road Liverpool, N.Y. 13088 Extremely Compact 10 Pin Flatpack With Metal Base Extremely Low Dropout Voltage: @ 1.5 Amps Available 5.0V, 12.0V and Adjustable Versions Open Collector Error Flag Output Available on Fixed Voltage Versions TTL Level Enable Pin: Zero Current Shutdown Mode Reverse Battery and Load Dump Protection Low Ground Current: 22mA Typical at Full Load 1% Guaranteed Accuracy Output Current to 1.5 Amps


The MSK 5101 series voltage regulators are available +12.0V or adjustable output configurations. All boast ultra low dropout specifications due to the utilization of a super PNP output pass transistor with monolithic technology. Dropout voltages at 1.5 amps are typical in this configuration, which drives efficiency up and power dissipation down. Accuracy is guaranteed with a 1% output voltage tolerance. The series also offers a TTL/CMOS compatible on/off enable function as well as an output flag pin on the fixed voltage versions. The MSK 5101 series is packaged in a space efficient 10 pin ceramic flatpack with a built in metal base.


Schematic shown for fixed output voltage versions

TYPICAL APPLICATIONS

High Efficiency, High Current Linear Regulators Constant Voltage/Current Regulators System Power Supplies Switching Power Supply Post Regulators Battery Powered Equipment


MSK5101-00 NC Enable Vin A Vin B NC Vout A Vout B NC Adj MSK5101-3.3,-5.0,-12 NC Enable Vin A Vin B NC Vout A Vout B Vout C NC Flag


BASE The base of the package is electrically connected to ground.

VINP VIN VEN IOUT Input Voltage to +60V Input Voltage 26V Enable Voltage to 26V Output Current 3.5A

Storage Temperature Range Lead Temperature (10 Seconds Soldering) Operating Temperature MSK5101 Series MSK5101H/E Series


Parameter Output Voltage Tolerance Dropout Voltage 2 Load Regulation Line Regulation Output Current Limit 2 Ground Current Output Noise


VOUT=-1%; IOUT=1.5A VIN=V OUT+1V 10mA IOUT 1.5A (VOUT +1V) VIN IOUT=10mA VOUT=0V; VIN=V f 100KHz HIGH/ON LOW/OFF HIGH/ON LOW/OFF VENABLE 0.8V VOH=26V IOL VIN=VOUT-2V VIN=VOUT-7% Normal Operation


Enable Input Voltage 2 Enable Input Current 2 Shutdown Output Current 2 Flag Output Leakage Flag Threshold


Flag Output On Voltage 9 Reference Voltage 8 Reference Voltage Temp Drift Adjust Pin Bias Current 2 8 Thermal Resistance Thermal Shutdown


Normal Operation Full Temp; VIN=VOUT+1V Junction to Case TJ

1 Output decoupled to ground using 10μF minimum capacitor unless otherwise specified. 2 This parameter is guaranteed by design but need not be tested. Typical parameters are representative of actual device performance but are for reference only. 3 All output parameters are tested using a low duty cycle pulse to maintain TJ = TC. 4 Industrial grade and class E devices shall be tested to subgroups 1 and 4 unless otherwise specified. 5 Military grade devices ('H' suffix) shall be 100% tested to subgroups 1,2,3 and TC=+25°C 6 Subgroup 1,4 Subgroup 2 TJ=+125°C Subgroup TA=-55°C 7 Applies to MSK5101-00 adjustable version only. 8 Applies to fixed output devices only.


The MSK 5101 series is fully protected against reversed input polarity, overcurrent faults, overtemperature conditions (Pd) and transient voltage spikes 60V. If the regulator is used in dual supply systems where the load is returned to a negative supply, the output voltage must be diode clamped to ground.


To select a heat sink for the MSK 5100, the following formula for convective heat flow may be used. Governing Equation: Pd x (Rjc + Rcs + Rsa) + Ta WHERE: Tj = Junction Temperature Pd = Total Power Dissipation Rjc = Junction to Case Thermal Resistance Rcs = Case to Heat Sink Thermal Resistance Rsa = Heat Sink to Ambient Thermal Resistance Ta = Ambient Temperature


The output voltage ripple of the MSK 5101 series voltage regulators can be minimized by placing a filter capacitor from the output to ground. The optimum value for this capacitor may vary from one application to the next, but a minimum 10μF is recommended for optimum performance. Transient load response can also be improved by placing a capacitor directly across the load.


In voltage regulator applications where very large load currents are present, the load connection is very important. The path connecting the output of the regulator to the load must be extremely low impedance to avoid affecting the load regulation specifications. Any impedance in this path will form a voltage divider with the load. The MSK 5101 series requires a minimum 10mA of load current to stay in regulation.


First, the power dissipation must be calculated as follows: Power Dissipation = (Vin - Vout) x Iout Next, the user must select a maximum junction temperature. The maximum allowable junction temperature is 125°C. The equation may now be rearranged to solve for the required heat sink to ambient thermal resistance (Rsa). EXAMPLE: An MSK 5101-3.3 is configured for Vin=+5V and Vout=+3.3V. Iout is a continuous 1A DC level. The ambient temperature is +25°C. The maximum desired junction temperature is 125°C. Rjc = 5°C/W and Rcs = 0.5°C/W typically. Power Dissipation = 1.7 Watts Solve for Rsa: Rsa 51.32°C/W In this example, a heat sink with a thermal resistance of no more than 51°C/W must be used to maintain a junction temperature of no more than 125°C.


The MSK 5101 series of voltage regulators are equipped with a TTL compatible ENABLE pin. A TTL high level on this pin activates the internal bias circuit and powers up the device. A TTL low level on this pin places the controller in shutdown mode and the device draws only 5μA of quiescent current. If the enable function is not used, simply connect the enable pin to the input.


All of the fixed output voltage versions of the MSK 5101 series are equipped with a flag output pin. Since the flag pin is an open collector configuration it can be pulled up to any voltage between 3V and 26V. This feature allows direct interfacing to practically any logic. This active low output has a typical level of 0.22V when the flag comparator detects an "out of regulation" condition. Flag states include low input voltage and output current limit. Extremely high level input voltage transients will also cause the flag output pin to activate.


The MSK 5101 series are highly thermally conductive devices and the thermal path from the package base to the internal junctions is very short. Standard surface mount techniques should be used when soldering the device into a circuit board. The external heat sink/pad needs to be connected to ground because the base of the MSK 5101 is also electrically connected to ground. The user is urged to keep this in mind when designing the printed circuit board for the MSK 5101. There should be no printed circuit traces making contact with the base of the device except for ground. The ground plane can be used to pull heat away from the device.


The MSK is an adjustable version in the series of high performance regulators. The diagram below illustrates proper adjustment technique for the output voltage. The series resistance of R1+R2 should be selected to pass the minimum regulator output current requirement of 10mA.

Search Part number : "MSK51" Included word is 11
Part Number Manufacturer Package Quantity Description
MSK5101-00H MSK 106
MSK5101-3.3 MSK xxx 78
MSK5101-3.3H MSK SOP 93
MSK5101-5.0 MSK SOP 75
MSK5102-1.9H MSK SOP 73
MSK5102-3.3H 78
MSK5115-00BTS TO220 75
MSK5115-00BZU MSK 69
MSK5115-00TS MSK Tube 69
MSK5130-00BTS MSK xxx 73
MSK5173HL M.S. Kennedy 79
MSK5101-00 RELATED PRODUCT PICTURE
left
  • MSK5101-00H
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  • MSK5101-3.3H
  • MSK5101-5.0
  • MSK5102-1.9H
  • MSK5102-3.3H
  • MSK5115-00BTS
  • MSK5115-00BZU
  • MSK5115-00TS
  • MSK5130-00BTS
  • MSK5173HL
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