1 Features

1• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following Results:

– Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

– Device HBM ESD Classification Level 1C

– Device CDM ESD Classification Level C4

• Eight Constant-Current Output Channels

• Output Current Adjusted Through External

Resistor

• Constant Output Current Range: 5 mA to 120 mA

• Constant Output Current Invariant to Load Voltage

Change

• Open Load, Short Load, and Overtemperature

Detection

• 256-Step Programmable Global Current Gain

• Excellent Output Current Accuracy:

– Between Channels: < ±3% (Maximum)

– Between ICs: < ±6% (Maximum)

• Fast Response of Output Current

• 30-MHz Clock Frequency

• Schmitt Trigger Input

• 3.3-V or 5-V Supply Voltage

• Thermal Shutdown for Overtemperature

Protection

2 Applications

• General LED Lighting Applications

• LED Display Systems

• LED Signage

• Automotive LED Lighting

• White Goods

• Gaming Machines and Entertainment

3 Description

The TLC591x-Q1 Constant-Current LED Sink Drivers

is designed to work alone or cascaded. Because each output is independently controlled, they can be

programmed to be on or off by the user. The high

LED voltage (VLED) allows for the use of one LED

per output or multiple LEDs on a single string. With

independently controlled outputs supplied with

constant current, the LEDs can be combined in parallel to create higher currents on a single string.

The constant sink current for all channels is set

through a single external resistor. This allows

different LED drivers in the same application to sink various currents which provides optional

implementation of multicolor LEDs. An additional

advantage of the independent outputs is the ability to

leave unused channels floating. The flexibility of the

TLC591x-Q1 LED driver is ideal for applications such as (but not limited to): automotive LED lighting, 7-

segment displays, scrolling single-color displays,

gaming machines, white goods, video billboards, and

video panels.