meta data for this page
  •  

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
sensor:bq25570 [2026/02/11 22:52] – vamsansensor:bq25570 [2026/02/11 22:57] (current) – vamsan
Line 4: Line 4:
  
 The Texas Instruments BQ25570 is intended for ultra-low power applications and lacks complex communication interfaces such as I²C, SPI, or UART. Instead, it relays status and control data through basic digital I/O pins and external resistor networks. The Texas Instruments BQ25570 is intended for ultra-low power applications and lacks complex communication interfaces such as I²C, SPI, or UART. Instead, it relays status and control data through basic digital I/O pins and external resistor networks.
- 
-**CJMCU-2557** 
- 
-The CJMCU-2557 is a highly efficient nanopower energy harvesting module utilizing the Texas Instruments BQ25570 IC. It is built to extract microwatt to milliwatt levels of power from high-impedance DC sources such as small solar panels or Thermoelectric Generators (TEG). 
  
 **Key Features and Specifications** **Key Features and Specifications**
Line 17: Line 13:
   * **Battery Good Output Flag:** A programmable output flag (BAT_OK) can be used to warn an attached microcontroller of impending power loss, allowing the system to take action or enter a low-power state.   * **Battery Good Output Flag:** A programmable output flag (BAT_OK) can be used to warn an attached microcontroller of impending power loss, allowing the system to take action or enter a low-power state.
   * **Package:** The BQ25570 is available in a compact 20-lead 3.5-mm x 3.5-mm QFN package.   * **Package:** The BQ25570 is available in a compact 20-lead 3.5-mm x 3.5-mm QFN package.
 +
 +**CJMCU-2557**
 +
 +The CJMCU-2557 is a highly efficient nanopower energy harvesting module utilizing the Texas Instruments BQ25570 IC. It is designed to extract microwatt-to-milliwatt power from high-impedance DC sources, such as small solar panels or Thermoelectric Generators (TEGs).
 +
 +**Primary Power Terminals**
 +
 +These are usually the larger pads or screw terminals at the edges of the board: 
 +
 +  * **INPUT+ / INPUT-:** Connect your energy source here (e.g., small solar panels, TEGs, or piezo elements).
 +  * **BAT+ / BAT-:** Connect your storage element here (Li-ion/LiPo battery or a supercapacitor).
 +  * **OUTPUT+ / OUTPUT-:** This is the regulated output from the built-in buck converter, used to power your sensors or microcontrollers. 
  
 {{tag>BQ25570 sensor Texas_Instruments nano-power_management DC-DC_Boost_Charger MPPT solar thermoelectric piezoelectric}} {{tag>BQ25570 sensor Texas_Instruments nano-power_management DC-DC_Boost_Charger MPPT solar thermoelectric piezoelectric}}