IS32LT3131A
DESCRIPTION
The IS32LT3131A/B/C is a linear LED driver with 12 programmable current sources capable of up to 75m A each. It supports an external thermal shunt resistor that dissipates thermal energy away from the LED driver to minimize thermal stress on the device and maintain a high output current accuracy. There are three bus interface options, UART (IS32LT3131A), CANLITE (IS32LT3131B) or SPI (IS32LT3131C) used for individual output control by a host MCU. A configurable watchdog automatically sets fail-safe modes should the bus interface loose munication. Each output can individually support 10-bit PWM dimming and 8-bit DC current adjustment. The output channels can be bined to provide a higher current drive capability, up to 900m A. For added system reliability, the IS32LT3131A/B/C integrates fault detection circuitry for LED string open/short, single LED short, overcurrent, overvoltage and over temperature conditions. The fault condition can be reported by a dedicated fault...
