TS19376

1A Step-down High Brightness LED Driver

3/8

Version: A12

Block Diagram

V25

GATE

DRIVER

Driver

+

-

+

-

DIM

BUFFER

VIN

CSN

DIM

2.5V

UVLO

COMPARATOR

CS

COMPARATOR

GND

SW

70µ

130mV

Pin Function Description:

Pin

Name

Description

1

SW

Switch Output. SW is the output of the internal driver switch.

2

GND

Signal and power ground. Connect directly to ground plane.

3

DIM

Logic level dimming input. Drive DIM low to turn off the current regulator.

Drive DIM high to enable the current regulator.

4

CSN

Current sense input

5

VIN

Input Supply Pin. Must be locally bypassed.

Typical Application Circuit

A

325

.

0

4

.

0

130

.

0

R

V

S

CSN

=

=