Lithium Battery Boost/Charge-Discharge Protection/Integrated Charge-Discharge Module
This module is an integrated charge-discharge module. It features overcurrent and overvoltage protection functions to better safeguard the safe use of output devices. LED indicators on the module provide a clear and intuitive understanding of the module’s operating status. Applications include automotive charging modifications, power supply for dash cams, portable chargers/power banks, mobile phones, tablets, and other portable devices.
Product Basic Parameters:
- Charging Voltage: DC4.5V-5.5V (recommended DC5V)
- Charging Current: 0-2.1A
- Charging Quiescent Current: 100uA
- Full Charge Voltage: 4.2V ± 1%
- Discharging Current: 0-2.4A
- Discharging Quiescent Current: 50uA
- Discharging Efficiency: ≤96%
- Output Voltage: 5V
- Output Current: 0-2.1A
- Operating Temperature: -20° to +85°
- Lithium Battery Protection Built-in (suitable for lithium batteries without or with protection boards)
- Overcurrent Protection (OCP): Yes
- Overvoltage Protection (OVP): Yes
- Short Circuit Protection (SCP): Yes
- Over-Temperature Protection (OTP): Yes
Product Dimension Diagram:
Product Pin Definitions and Functions:
- VIN: Correct input for charging port + (DC4.5V-5.5V, recommended DC5V)
- GND: Negative input for charging port –
- GND: Lithium battery –
- BAT: Lithium battery +
- GND: Negative output for discharge port –
- VOUT: Positive output for discharge port +
- KEY: Output enable trigger port (triggered by a low pulse)
- In discharging mode (KEY function invalid in charging mode), triggering the KEY port once will turn on the output; triggering it consecutively twice will turn off the output.
- Automatically turns on the output when a load is first connected. If the load is less than 50mA, the output will turn off after 30 seconds; if the load is greater than 50mA, the output will remain on.
- Allows simultaneous charging and discharging (note: output voltage is >4.7V and <5V during this time).
Usage Instructions:
- Integrated Charge-Discharge/Discharge Only/Charge Only
- When the module is connected for charging, the output will switch to external power supply (power will be cut off for 0.3s). During charging, the output voltage will be <5V and >4.7V, depending on the charger’s load capacity.
- Trigger Method: Low-level trigger (grounding)
- When connected to a microcontroller, if the load KEY is less than the required value, grounding the microcontroller for approximately 20s can keep the module operating continuously.
LED Indicator Status:
