TS19376

1A Step-down High Brightness LED Driver

1/8

Version: A12

SOT-89-5L

General Description

The TS19376 is a continuous conduction mode inductive step-down converter, designed for driving single or

multiple series connected LED efficiently from a voltage source higher than the total LED chain voltage. The

device operates from an input supply between 8V and 32V and provides an externally adjustable output current of

up to 1A. Depending upon the supply voltage and external components, the TS19376 can provide more than 15

watts of output power. The TS19376 includes the power switch and a high-side output current sensing circuit,

which uses an external resistor to set the nominal average output current, and a dedicated DIM input accepts a

wide range of pulsed dimming. Applying a voltage of 0.3V or lower to the DIM pin turns the output off and switches

the device into a low current standby state

Features

●

Wide input voltage range: 8V to 32V

●

Up to 1A output current

●

5000:1 Dimming

●

Single pin on/off and brightness control using PWM

●

Up to 1MHz switching frequency

●

Typical 5% output current accuracy

●

High-Side Current Sense

●

Hysteretic Control: No Compensation

●

Adjustable Constant LED Current

Application

●

White LED Backlighting

●

High Power LED Application

●

LED Lighting Equipment

Ordering Information

Part No.

Package

Packing

TS19376CY5 RMG

SOT-89-5L

1Kpcs / 7” Reel

Note: “G” denotes Halogen Free Product.

Absolute Maximum Rating

Parameter

Symbol

Limit

Unit

Supply Voltage

-0.3 to 40

V

Driver output Voltage

SW

-0.3 to 40

V

CSN

+0.3 to (-6.0)

V

Logic level dimming input

DIM

-0.3 to +6

V

Switch output current

1.0

A

Power Dissipation

1.5

W

Operation Junction Temperature Range

-40 to 125

°C

Storage Temperature

-55 to 150

°C

Thermal Resistance from Junction to case

15

°C/W

Thermal Resistance from Junction to ambient

50

°C/W

Pin Definition:

1. SW

2. GND

3. DIM

4. CSN

5. VIN