General Description
The MAX1795/MAX1796/MAX1797 are high efficiency step-up DC-DC converters intended for small portable hand-held devices. These devices feature Maxim’s True-Shutdown™ circuitry, which fully disconnects the output from the input in shutdown, improves efficiency, and eliminates costly external components. All three devices also feature Maxim’s proprietary LX-damping circuitry for reduced EMI in noise-sensitive applications. For additional in-system flexibility, a battery monitoring comparator (LBI/LBO) remains active even when the DC-DC converter is in shutdown.

FEATUREs
♦ >95% Efficiency
♦ True-Shutdown Circuitry
    Output Disconnects from Input in Shutdown
    No External Schottky Diode Needed
♦ 25µA Quiescent Supply Current
♦ Low-Noise Antiringing Feature
♦ LBI/LBO Comparator Enabled in Shutdown
♦ 2µA Shutdown Current
♦ 8-Pin µMAX Package

APPLICATIONs
    Portable Digital Audio Players
    PDAs/Palmtops
    Wireless Handsets
    Portable Terminals