STLC1 datasheet(1/16 Pages) STMICROELECTRONICS

部件名	STLC1

功能描述	LED LAMPS CLUSTER DRIVER

PDF	16 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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September 2002

s

FULLY MONOLITHIC FIXED FREQUENCY

SMPS

s

THREE LOW SIDE DRIVERS FOR STOP

TAIL AND TURN LED LAMPS ARRAYS

DRIVING

s

PROGRAMMABLE LOW SIDE DRIVER

OVER CURRENT LIMIT PROTECTION

s

UNDER CURRENT DIAGNOSTIC

s

INPUT OVERVOLTAGE PROTECTION

s

VERY LOW STAND-BY CURRENT

s

THERMAL PROTECTION WITH

HYSTERESIS

DESCRIPTION

The STLC1, a device realized with the well

established BCD technology, is a fixed frequency

fully monolithic SMPS, with three independent

smart low side driver, primarily intended for

automotive rear led lamps driving.

The output voltage is set using a simple resistor

divider. Thermal shutdown with hysteresis, input

over-voltage and overcurrent protections give

robust design solutions.

STLC1

LED LAMPS CLUSTER DRIVER

ST -L

TL -L

-

+

TR -L

B+

TURN

STOP

TAIL

OSCILLATOR

PWM

SWITCH

CONTOLLER

-

+

1.24V

THERMAL

PROTECTION

CNTL

TS -PWM

LAMP

OUTAGE

DETECT

PULSE WIDTH

CONTROLLER

P-OUT

TR -DRV

REF

FDBK

ST -DRV

TL -DRV

REF

GND

LMP -OUT

OSC

COMP1

R

s

ERR AMP

M1

M2

M3

I

N

P

U

T

PWM

COMP

SCHEMATIC DIAGRAM

PowerSO-20TM

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