This compact PFM-controlled module steps up input voltages as low as 0.9 V to a stable 5 V DC output. Designed for single-cell battery applications, it powers USB devices and microcontrollers from minimal input sources. Ideal for DIY portable chargers, low-voltage recovery, and energy harvesting setups.

Specifications

• Input Voltage:
  • 0.9 V to 5 V DC
• Output Voltage:
  • Fixed 5 V DC (regulated)
• Maximum Output Current:
  • ~200–300 mA (single AA battery)
  • ~500–600 mA (two AA batteries or 3.7 V Li-ion)
• Efficiency:
  • Up to 96% (load-dependent)
• Control Method:
  • PFM (Pulse Frequency Modulation)
• USB Interface:
  • Standard USB-A female output
• Indicators:
  • Power LED (input voltage detected)

Features

• Boosts ultra-low input voltages to stable 5 V USB output
• Ideal for single-cell AA, AAA, or Li-ion battery sources
• Compact and lightweight for portable applications
• Onboard USB-A port for direct device connection
• Input voltage LED indicator for quick diagnostics
• Suitable for powering microcontrollers, Bluetooth modules, and USB gadgets
• Common use cases:
  • DIY mobile chargers
  • Battery-powered sensor nodes
  • Emergency USB power from low-voltage sources