General Description

The MAX1522/MAX1523/MAX1524 are simple, compact boost controllers designed for a wide range of DC-DC conversion topologies, including step-up, SEPIC, and flyback applications. They are for applications where extremely low cost and small size are top priorities. These devices are designed specifically to provide a simple application circuit and minimize the size and number of external components, making them ideal for PDAs, digital cameras, and other low-cost consumer electronics applications.

Features

♦ Simple, Flexible Application Circuit

♦ 2-Cell NiMH or Alkaline Operation (MAX1524)

♦ Low Quiescent Current (25µA typ)

♦ Output Fault Protection and Soft-Start

♦ High Efficiency Over 1000:1 IOUT Range

♦ Pin-Selectable Maximum Duty Factor

♦ Micropower Shutdown Mode

♦ Small 6-Pin SOT23 Package

♦ No Current-Sense Resistor

Applications

Low-Cost, High-Current, or High-Voltage Boost Conversion

LCD Bias Supplies

Industrial +24V and +28V Power Supplies

Low-Cost, Multi-Output Flyback Converters

SEPIC Converters

Low-Cost BatteryPowered Applications