6-Channel SMBus or PWM Dimming LED Driver with Phase Shift Control

The ISL97673 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 ISL97673 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 ISL97673 VIN pin.

FEATUREs
• 6 channels
• 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