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.