LiPower - Boost Converter

The LiPower board is based on the incredibly versatile TPS61200 boost converter. The board is configured to be used with a LiPo battery, has solder jumper selectable 5V and 3.3V output, and an under voltage protection of 2.6V. However, the board can also be used as a general purpose buck and boost regulator with an input voltage as low as 0.3V (default UVLO is 2.6V). With such a low input voltage and quiescent current , the board also works well in energy harvesting applications that use low input voltages.

Note: This board does not have reverse polarity protection, so please use the correct LiPo batteries or be sure to recognize the polarity if using your own input source.

Features:

• Input voltage 0.3-5.5V
• Output voltage 3.3 or 5V
• 5V @ 600mA max
• 3.3V @ 200mA max
• Undervoltage lock out at 2.6V
• Quiescent current, less than 55uA
• LiPo JST connector or 2-pin header power input\
• Inductor: 4.7uH, 1.2A Sumida CDRH2D18
• Over temperature protection

Documents:

• Schematic
• Eagle Files
• Datasheet (TPS61200)
• UVLO Modification