Single 18650 LiPo Battery to 5V Boost Converter

  • Rajkumar Sharma
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This small board is based on the CS5171 boost converter from ON Semiconductor. The board is configured to be used with a single 18650 LiPo battery. The circuit converts single-cell 3.7V LiPo battery voltage to 5V with a load current up to 400mA. Board has been designed to fit on the backside of a single-cell battery holder with a screw. The CS5171 IC is a 280 kHz switching regulator with a high efficiency, 1.5 A integrated switch.

Features

  • Supply Input 2.7V-3.7V (Single Lipo Battery)
  • Output 5V
  • Output Current 400mA
  • Operation Frequency 280 kHz
  • Very Tiny Board Designed to Fit On Back Side Of LIPO Battery Holder
  • PCB Dimensions 44.27 x 11.01 mm

Schematic

Parts List

Connections

Photos

CS5171 Datasheet

CS5171-D

PCB

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