Renesas Electronics Corporation LED Drivers ISL97635IRZ-TKS2038

The ISL97635IRZ-TKS2038 is an 8-channel LED driver designed for LCD backlighting applications, capable of operating with input voltages ranging from 6V to 24V and providing a maximum output voltage of 34.5V. It can drive up to 72 LEDs at 3.5V/30mA or 80 LEDs at 3.2V/20mA, with a typical current matching accuracy of ±1%. The device features dynamic headroom control to optimize power efficiency and includes multiple dimming control options via SMBus, external PWM, or DC inputs, allowing for 256 levels of brightness adjustment. Protection features include string open circuit detection, short-circuit detection with selectable thresholds, over-temperature protection, overvoltage protection, and input overcurrent protection with a disconnect switch. The ISL97635 operates at selectable switching frequencies of 600kHz or 1.2MHz and is housed in a compact 24-lead QFN package, making it suitable for applications in notebook displays, LCD monitors, and automotive lighting. The operating temperature range is from -40°C to +85°C, ensuring reliability in various environments.