PowerBoost 500 Basic - 5V USB Boost @ 500mA from 1.8V+

The PowerBoost 500 Basic is a compact DC/DC boost converter that takes input from 1.8V or higher and outputs a steady 5.2V — perfect for powering portable 5V projects from batteries. The slightly elevated 5.2V output provides headroom for cable resistance and high-current draws, preventing brown-outs while remaining safe for all 5V electronics.

Built around the TI TPS61090 boost converter with synchronous conversion, the module delivers excellent efficiency (90%+) and includes a low-battery indicator LED. Each board comes with a loose USB-A jack for optional soldering.

Key Features

• 1.8V+ Input – Works with LiPo, NiMH, alkaline, and other battery types
• 5.2V Regulated Output – Safe for all 5V devices with headroom for cable losses
• 90%+ Efficiency – Synchronous conversion for minimal power waste
• Low Battery Indicator – Red LED lights when input drops below 3.2V
• Enable Pin – Completely disconnect output by pulling EN to ground
• USB Charging Resistors – On-board 500 mA charge-rate data resistors

Specifications

• Converter IC: TI TPS61090
• Input Voltage: 1.8V+
• Output Voltage: 5.2V DC
• Output Current: 500 mA+ @ 1.8V, 750 mA+ @ 2.4V (2× NiMH), 1000 mA+ @ 3.7V (LiPo)
• Internal Switch: 2A (~2.5A peak)
• Switching Frequency: 700 kHz
• Quiescent Current: 5 mA (enabled), 20 µA (disabled)

Ideal For

• Battery-powered Arduino and Raspberry Pi projects
• Portable robotics
• Wearable electronics
• Field-deployed sensors and data loggers

Package Contents

• 1× PowerBoost 500 Basic PCB (assembled and tested)
• 1× USB-A Jack (loose, for optional soldering)

Resources

• TPS61090 Datasheet (TI)