MAX829SNTR

开关电容电压转换器 Switched Capacitor Voltage Converters

Switched Capacitor Voltage Converters

The MAX828/829 are CMOS “charge–pump” voltage converters in ultra–small SOT–23 5 lead packages. They invert and/or double an input voltage which can range from +1.5V to +5.5V. Conversion efficiency is typically >95%. Switching frequency is 12kHz for the MAX828 and 35kHz for the MAX829.

Features

•Charge Pump in SOT–23 5 Lead Package

•>95% Voltage Conversion Efficiency

•Voltage Inversion and/or Doubling

•Low 50 µA MAX828 Quiescent Current

•Operates from +1.5V to +5.5V

•Up to 25 mA Output Current

•Only Two External Capacitors Required

•Tested Operating Temperature Range: –40°C to +85°C

Typical Applications

•LCD Panel Bias

•Cellular Phones

•Pagers

•PDAs, Portable Dataloggers

•Battery–Powered Devices