TLC5917 Overview
The TLC591x Constant-Current LED Sink Drivers are designed to work alone or cascaded. Since 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 a single LED per output or multiple LEDs on a single string. With independently controlled outputs supplied with constant current, the LEDs can be bined 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 multi-color LEDs. An additional advantage of the independent outputs is the ability to leave unused channels floating. The flexibility of the TLC591x LED drivers is ideal for
TLC5917 Key Features
- 1 Eight Constant-Current Output Channels
- Output Current Adjusted Through Single External
- Constant Output Current Range: 3-mA to 120-mA
- Constant Output Current Invariant to Load Voltage
- Open Load, Short Load and Overtemperature
- 256-Step Programmable Global Current Gain
- Excellent Output Current Accuracy
- Between Channels: < ±3% (Maximum)
- Between ICs: < ±6% (Maximum)
- Fast Response of Output Current