Maxim Integrated MAX732CPA

Description
The MAX732/MAX733 are CMOS step-up DC-DC switch-mode regulators. The MAX732 is a 12V regulator that accepts inputs from 4.0V to 9.3V and delivers up to 200mA of DC current. The MAX733 is a 15V regulator that delivers up to 125mA and accepts inputs from 4.0V to 11.0V. Typical full-load efficiencies are 85% to 92%. They require only a single inductor value of 5QH to function over their entire ranges, so no inductor-related design is necessary. Accuracy is guaranteed over temperature, line, and load variations. The MAX732/MAX733 use a current-mode pulse-width modulation (PWM) controller to provide precise output regulation and low subharmonic noise. Typical no-load supply current is 1.7mA. Fixed 170kHz oscillator frequencies allow easy filtering of ripple and noise and provide for small external components. The MAX732/MAX733 feature cycle-by-cycle current limiting, overcurrent limiting, undervoltage lockout, and programmable soft-start protection.

Features
Load Currents Guaranteed to 200mA with No External MOSFET (125mA for MAX733)
170kHz High-Frequency Current-Mode PWM
Small Inductor and No Component Design Required
85% to 82% Typical Efficiencies at Full Load
Overcurrent and Soft-Start Protection
8-Pin DIP, 16-Pin Wide SO Packages
Step-Up from a 4.0V Input
Shutdown Pin

Applications
Flash Memory Programming Power Supply
PWM Regulators
Portable Instruments
Distributed Power Systems
Computer Peripherals
DC-DC Converter Module Replacement