STLC1 Datasheet, PDF (1/16 Pages) STMicroelectronics – LED LAMPS CLUSTER DRIVER

STLC1
LED LAMPS CLUSTER DRIVER
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.
PowerSO-20^TM
The output voltage is set using a simple resistor
divider. Thermal shutdown with hysteresis, input
over-voltage and overcurrent protections give
robust design solutions.
SCHEMATIC DIAGRAM
September 2002
OSCILLATOR
TURN
I
N
STOP
P
U
TAIL
T
CNTL
TS -PWM
PULSE WIDTH
CONTROLLER
GND
OSC
LMP -OUT
LAMP
OUTAGE
DETECT
B+
THERMAL
PROTECTION
PWM
SWITCH
CONTOLLER
-
COMP1
R_s
+
P-OUT
PWM
COMP
-
ERR AMP
+
1.24V
FDBK
REF
REF
TR -DRV
M1
M2
M3
ST -DRV
TL -DRV
TL -L ST -L TR -L
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