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 5x5mm TQFN and 28 Ld 300mil SOIC Packages Available

Applications

• Monitor/TV LED Backlighting

• General/Industrial/Automotive Lighting