ISL97693 Datasheet | Renesas

ature phase shifting that may be enabled optionally, providing an optimized phase delay between channels. In the ISL97692 and ISL97694A, phase shifting can multiply the effective dimming frequency by four and six allowing above audio-band PWM dimming with 10-bit dimming resolution. The ISL97692, ISL97693, ISL97694A employ adaptive boost architecture, which keeps the headroom voltage as low as possible to maximize battery life while allowing ultra low dimming duty cycle as low as 0.005% at 100Hz dimming frequency in Direct PWM mode. The ISL97692, ISL97693, ISL97694A incorporate extensive protection functions including string open and short circuit detections, OVP, and OTP. The ISL97692 and ISL97693 are offered in the 16 Ld 3x3mm TQFN package, and a 16 bump 1.7x1.7mm WLCSP for the ISL97692. The ISL97694A is offered in the 20 Ld 3x4mm TQFN package. All parts operate in the ambient temperature range of -40°C to +85°C. Features - 2.4V minimum input voltage, supports single cell applications - 4 channels, up to 40m A each (ISL97692) or 6 channels, up to 30m A each (ISL97693, ISL97694A) - 90% efficient at 6P5S, 3.7V and 20m A (ISL97693, ISL97694A) - Low 0.8m A quiescent current - PWM dimming control with internally generated clock - 8-bit resolution with adjustable dimming frequency up to 30k Hz (ISL97692, ISL97694A) - 12-bit resolution with adjustable dimming frequency up to 1.875k Hz (ISL97694A) - Optional automatic channel phase shift (ISL97692, ISL97694A) - Linear dimming from 0.025%~100% up to 5k Hz or 0.4%~100% up to 30k Hz (ISL97692, ISL97694A) - Direct PWM dimming with 0.005% minimum duty cycle at 100Hz - ±2.5% output current matching - Adjustable switching frequency from 400k Hz to 1.5MHz Applications - Tablet, Notebook PC and Smart Phone Displays LED Backlighting Related Literature - For a full list of related documents, visit our website - ISL97692, ISL97693, ISL97694A product pages VIN: 2.4V~5.5V 10 1µF 15n F 12k 53k 4.7µF L1 10µH D1 VOUT: 24.5V, 6 x 20m A 4.7µF...