White LED Driver with Digital Dimming

The ISL97632 represents an efficient and highly integrated PWM boost LED driver that is suitable for 1.8” to 3.5” LCDs that employ 2 to 6 white LEDs for backlighting. With integrated Schottky diode, OVP, and dynamic digital dimming capability, the ISL97632 provides a simple, reliable, and flexible solution to the backlight designers.

FEATUREs
• 5-Bit Digital Dimming Control
• Drives up to 6 LEDs in Series
• OVP (14V, 18V and 26V for 3, 4, and 6 LEDs applications)
• Integrated Schottky Diode
• 2.4V to 5.5V input
• 86% Efficiency
• 1.4MHz Switching Frequency Allows Small LC
• Enable for Shutdown Function or Zero Brightness Setting
• 1µA Shutdown Current
• Internally Compensated
• 8 Ld DFN (2mmx3mm)
• Pb-Free Plus Anneal Available (RoHS Compliant)

APPLICATIONs
• LED backlighting for
    - Cell phones
    - Smartphones
    - MP3
    - PMP
    - Automotive Navigation Panel
    - Portable GPS