1 Features

• Single-channel high-precision current source:

– ±4.6% Current accuracy from –40°C to +125°C

– Current adjustable by external sense resistor

– Up to 150 mA maximum current

• Wide input-voltage range: 4.5 V – 40 V

• Brightness control by input PWM duty cycle

• Low dropout voltage (current-sense voltage drop

included)

– Maximum dropout: 150 mV at 10 mA

– Maximum dropout: 400 mV at 70 mA

– Maximum dropout: 700 mV at 150 mA

• Low quiescent current: typical 200 μA

• Protection:

– LED short-circuit protection with auto-recovery

– Thermal shutdown

• Support heat sharing with external resistor

• Operating junction temperature range: –40°C to

+150°C

2 Applications

• LED driver, constant current source, or current

limiter for:

– Washer and dryer

– Refrigerator and freezer

– Gas detector

– Factory automation and control

– Building automation

– Medical

3 Description

With LEDs being widely used as a light source,

simple LED drivers are more and more popular.

Compared to discrete solutions, a low-cost monolithic

solution lowers system-level component counts and

significantly improves current accuracy and reliability.

The TPS92612 device is a single-channel high-side

linear LED driver operating from a wide range supply.

It is a simple, yet elegant solution to deliver constant

current for a single LED string. It can support offboard

LED connection with long cables. The

TPS92612 device can also be used as a general

constant current source or current limiter in other

applications.