AAT2610

The AAT2610 is a highly integrated power management solution specifically suited for Digital Still Camera (DSC) systems, featuring seven DC-DC switching regulators for maximum operating efficiency.

The input operating voltage range is 1.6 to 5.5V, making the device an ideal solution for 1-cell Li-ion batteries, 2-cell alkaline batteries, and USB and regulated AC-DC wall adapters. 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 V_IN. 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 V_IN. The Auxiliary 1 boost (step-up) 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 buck-boost (inverting) output provide low noise (30mVpp) +15V and -7.5V outputs for CCD loads. An expensive transformer is not required. No external MOSFETs and low profile TQFN55-40L package are ideal to save space for DSC solution. Integrated, low R_DS(ON) power MOSFETs provide output voltages from 0.6V to 16VDC and an inverting output up to -10V. The high switching frequency ensures small external filtering components. Internal compensation is provided for optimum transient performance and minimum application design effort.