4-Channel LED Driver with Phase Shift Control and 10-Bit Dimming Resolution

The ISL97687 is a PWM controlled LED driver that supports 4 channels of LED current, for Monitor and TV LCD backlight applications. It is capable of driving 160mA per channel from a 9V to 32V input supply, with current sources rated up to 75V absolute maximum.

Features

• 4x160mA, 75V rated channels with integrated channel regulation FETs

• Channels can be ganged for high current

- 2x350mA

- 1x700mA

• 9V~32V input voltage

• Dimming modes:

- Direct PWM dimming from 100Hz~30kHz

- PWM dimming with adjustable output frequency

- 10-bit dimming resolution

- VSYNC function to synchronize PWM signal to frame rate

- Phase shift

- Analog to PWM dimming with 8-bit resolution

• 2 selectable current levels for 3D applications

• Current matching of ±1

• Integrated fault protection features such as string open circuit protection, string short circuit protection, overvoltage protection, and over-temperature protection

• 28 Ld 5mmx5mm TQFN and 28 Ld 300mil SOIC Packages Available

Applications

• Monitor/TV LED Backlighting

• General/Industrial/Automotive Lighting