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STMicroelectronics L4999BB1

Name: STMicroelectronics L4999BB1
Brand: STMicroelectronics
Rating: 4.8 (8 reviews)

Kynix Part #: KY568-L4999BB1

Manufacturer Part #: L4999BB1

Product Category: PMIC - Voltage Regulators - Special Purpose

Manufacturer: STMicroelectronics

Description: Voltage Regulators - Switching Regulators LV Automotive Reg BCD4 5V up to 500mA

Package:

Quantity: 33000

ECAD Model:

Attribute

Attribute Value

Factory Lead Time

37 Weeks

Part Status

Active

Moisture Sensitivity Level (MSL)

3 (168 Hours)

Base Part Number

L4999

RoHS Status

ROHS3 Compliant

0 Similar Products Remaining

DESCRIPTION

This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control. Based on a standard current mode PWM control ler this device includes some features as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns (typ) leading edge blanking on current sense, pulse by pulse current limit and overcurrent protection with soft start in tervention.

■ CURRENT-MODE CONTROL PWM

■ SWITCHING FREQUENCY UP TO 1MHz
■ LOW START-UP CURRENT < 0.45mA
■ HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A)
■ FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION
■ PROGRAMMABLE DUTY CYCLE
■ 100% AND 50% MAXIMUM DUTY CYCLE LIMIT
■ PROGRAMMABLE SOFT START
■ PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY
■ PWM UVLO WITH HYSTERESIS
■ IN/OUT SYNCHRONIZATION
■ DISABLE LATCHED
■ INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE
■ PACKAGE: DIP16 AND SO16W

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Images are for reference only

Kynix Part #: KY568-L4999BB1

Manufacturer Part #: L4999BB1

Product Category: PMIC - Voltage Regulators - Special Purpose

Manufacturer:

STMicroelectronics

Description: Voltage Regulators - Switching Regulators LV Automotive Reg BCD4 5V up to 500mA

Package:

Quantity:

33000

ECAD Model:

Request Quote In Stock: 33,000 units, ready to ship

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Shipped from:	Shenzhen warehouse
Expected Shipping:	Mon Aug 17 2026 to Tue Aug 18 2026
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