TS19460_15 Datasheet, PDF (5/9 Pages) Taiwan Semiconductor Company, Ltd – AC/DC WLED Driver with Average-Mode Constant Current Control

FUNCTION BLOCK DIAGRAM
TS19460
Taiwan Semiconductor
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
NAME
VIN
CS
GND
GATE
PWMD
VDD
LD
RT
FUNCTION
This pin is the input of 8V~450V linear regulator
This pin is the current sense pin used to sense the MOSFET current by means
of an external sense resistor.
Ground return for all internal circuitry. This pin must be electrically connected
to the ground of the power train.
This pin is the output GATE driver for an external N-CH Power MOSFET
This is the PWM dimming input of the IC. When this pin is pulled to GND, the
Gate Driver is turned off. When the pin is pulled high, the GATE driver
operates normally.
This is the power supply pin for all internal circuits.
It must be bypassed with a low ESR capacitor to GND (≥0.1µF)
This pin is the linear dimming input and sets the current sense threshold as
long as the voltage at the pin is less than 1.5V, The Gate output is disable
when LD voltage <150mV(typ.) and recovery when LD voltage >200mV (typ.)
A resistor is connected between RT and GND to program the Gate off-time.
Document Number: DS_P0000188
5
Version: D15