6-Channel LED Driver with Phase Shift Control and Frame Rate to Dimming Frequency Synchronization

The ISL97674 is a 6-Channel 45V dual dimming capable LED driver that can be used with either SMBus/I2C or PWM signal for dimming control. The ISL97674 drives 6 channels of LED to support 78 LEDs from 4.5V to 26V or 48 LEDs from a boost supply of 2.7V to 26V and a separate 5V bias on the ISL97674 VIN pin.

FEATUREs
• 6 Channels
• Frame Rate to Dimming Frequency Synchronization
• 4.5V to 26.5V Input
• 45V Output Max
• Up to 40mA LED Current per channel
• Extensive Dimming Control
    - PWM/DPST Dimming, I2C 8-bit with equal phase shift, and 0.007% Direct PWM dimming at 200Hz
• Optional Master Fault Protection
• PWM Dimming Linearity 0.4%~100% <30kHz
• 600kHz/1.2MHz selectable switching frequency
• Dynamic Headroom Control
• Protections with Flag Indication
    - String Open/Short Circuit, VOUT Short Circuit, Overvoltage and Over-Temperature Protections
    - Optional Master Fault Protection
• Current Matching ±0.7%
• 20 Ld 4mmx3mm QFN Package

APPLICATIONs
• Notebook Displays WLED or RGB LED Backlighting
• LCD Monitor LED Backlighting
• Automotive Displays LED Backlighting