TS19460

AC/DC WLED Driver with External MOSFET

Universal High Brightness

3/7

Version: A12

Block Diagram

Pin Description

Pin

Function

Description

1

VIN

This pin is the input of 8V~450V linear regulator

2

CS

This pin is the current sense pin used to sense the MOSFET current by means of an

external sense resistor.

3

GND

Ground return for all internal circuitry. This pin must be electrically connected to the ground

of the power train.

4

GATE

This pin is the output GATE driver for an external N-CH Power MOSFET

5

PWMD

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.

6

VDD

This is the power supply pin for all internal circuits.

It must be bypassed with a low ESR capacitor to GND (≥0.1µF)

7

LD

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.)

8

RT

A resistor is connected between RT and GND to program the Gate off-time within the range

of 30kohm