AAT2610 Datasheet PDF

GENERAL DESCRIPTION

All seven DC-DC switching regulators feature high efficiency light load operating mode to extend battery life while in low power standby state. Three different DC-DC building blocks provide maximum design flexibility: a boost (step-up) DC-DC controller with an output voltage range of 3.0V to 5.5V and a current mode control buck (step-down) or boost (step-up) DC-DC controller with an output voltage range of 2.5V to the step-up converter (SU) output voltage and buck output range of 0.6V to VIN. Dual current mode control synchronous buck regulators provide low voltage, low noise outputs required for system logic and memory. Output voltage range is 0.6V to VIN. The Auxiliary 1 boost (stepup) is ideally suited for LCD backlight and can drive 1-6 white LEDs with ±10% accuracy. PWM input controls LED dimming across the frequency range from 10% to 100% duty cycle. The integrated OVP and SCF feature protects the device from open-circuit LED conditions. The Auxiliary 2 boost (step-up) and Auxiliary 3 buckboost (inverting) output provide low noise (≤30mVpp) +15V and -7.5V outputs for CCD loads.