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AME, Inc.
AME5172
n General Description
The AME5172 is a high-efficiency, current mode, synchronous PWM Boost DC-DC Converter with fixed 3.3V output voltage for system applications powered by single or double cell NiMH or Alkaline battery pack. Built-in 0.35Ω NMOS switch and 0.45Ω PMOS synwww.DataSheet4U.com chronous rectification significantly improves efficiency and reduces external components count. High switching frequency (at 1.2MHz) allows easy filtering and faster loop performance. AME5172 uses SOT-25 package that gives a small size solution.
0.85V Single Cell Boost DC-DC Converter
n Typical Application
L1 4.7µH VIN CIN 4.7µF 1 5
VOUT 3.3V up to 200mA COUT 4.7µF
IN
SW
AME5172 OUT OFF ON 3 EN GND 4 2
n Features
l PWM Control with 1.