High-Efficiency, Step-Down DC/DC Controller
The AIC1576 is a high performance step-down DC/DC controller, designed to drive an external P-channel MOSFET to generate programmable output voltages. Two main schemes of Pulse-Skipping and Pulse-Frequency Modulation are employed to maintain low quiescent current and high conversion efficiency under wide ranges of input voltage and loading condition. The AIC1576 delivers 10mA to 2A of output current with 87%~93% efficiency at VIN=9V, VOUT=5V condition. A current sense comparator with both inverting and non-inverting input uncommitted is included to provide the crucial function of either current limit protection or constant output current control. The efficiency of AIC1576 is typically greater than 90%. Quiescent current is about 90µA and can be reduced to 8µA in shutdown mode. Switching frequency being in around 90KHz to 280KHz range, small size switching components are ideal for battery powered portable equipment.
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DS-1576P-02, AIC1576
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| DS-1576P-02 Archive | DS-1576P-02 PCN | DS-1576P-02 Prototype | DS-1576P-02 Example |
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