General Description
The MAX1800 provides a complete power-supply solution for digital still cameras and video cameras. The device integrates a high-efficiency main step-up DC-DC converter, three auxiliary step-up controllers, and an uncommitted gain block that drives an external P-channel MOSFET for a linear regulator. The MAX1800 is targeted for applications that use either two or three primary cells or a single lithium-ion (Li+) battery.

Features
♦ +0.7V to +5.5V Input Voltage Range
♦ Main DC-DC Converter
    95% Efficiency
    +2.7V to +5.5V Adjustable Output Voltage
    1.5A Load Current
♦ Uncommitted Gain Block for Linear Regulator
♦ Three Independent Auxiliary Step-Up Controllers Adjustable Maximum Duty Cycle
♦ Oscillator and Reference Outputs to Drive External Slave Controllers (MAX1801)
♦ Power-Ready Output
♦ Up to 1MHz Switching Frequency
♦ 1µA Supply Current in Shutdown Mode
♦ Internal Soft-Start Control
♦ Overload Protection for all DC-DC Converters
♦ Compact 32-Pin TQFP Package (5mm x 5mm body)

Applications
    Digital Still Cameras
    PDAs
    Digital Video Cameras
    DVD Players
    Hand-Held Devices
    Internet Access Tablets