Datasheet4U Logo Datasheet4U.com

MAX1730 Datasheet 50mA Regulated Step-Down Charge Pump

Manufacturer: Maxim Integrated (now Analog Devices)

General Description

The MAX1730 regulated step-down charge pump generates up to 50mA at fixed output voltages of 1.8V or 1.9V from an input voltage in the 2.7V to 5.5V range.

Specifically designed to provide high-efficiency logic supplies in applications that demand a compact design, the MAX1730 employs fractional conversion techniques to provide efficiency exceeding that of a linear regulator.

The MAX1730 operates at up to 2MHz, permitting the use of small 0.22µF flying capacitors while maintaining low 75µA quiescent supply current.

Overview

MAX1730 19-1618; Rev 0; 4/00 50mA Regulated Step-Down Charge Pump for 1.8V or 1.