Product Overview
The CJMCU-2557 is a nano-power energy harvesting power management module based on the Texas Instruments BQ25570 IC. It is designed to efficiently collect, store, and regulate energy from ultra-low-power sources such as solar cells and thermoelectric generators. This module enables long-term operation of battery-powered or capacitor-powered devices where conventional power sources are unavailable or impractical.
By integrating a high-efficiency boost charger and a buck converter, the CJMCU-2557 can charge energy storage elements and provide a regulated output voltage suitable for low-power electronics.
Core Features
Ultra-low startup and operating power consumption
Integrated boost charger for energy harvesting sources
Integrated buck converter for regulated system output
Built-in Maximum Power Point Tracking (MPPT)
Suitable for solar, thermoelectric, and other low-energy sources
Designed for always-on, long-life embedded systems
Electrical Specifications
Power management IC: BQ25570
Input voltage range: 330 mV to 5.5 V
Output voltage range: 1.8 V to 5.5 V
Boost converter efficiency: up to 94 percent
Buck converter efficiency: up to 90 percent
Maximum charging current: up to 100 mA
Energy Harvesting Support
Solar cells
Thermoelectric generators
Other ultra-low-power energy sources
Mechanical Specifications
Board dimensions: 26.6 mm x 27.8 mm
Typical Applications
Energy harvesting IoT nodes
Wireless sensor networks
Wearable electronics
Remote environmental sensors
Ultra-low-power data loggers
Package Contents
One CJMCU-2557 BQ25570 energy harvesting power management module
