2A 5V Charge Discharge Integrated 3.7V 4.2V Lithium Battery Boost Mobile Power Protection Diy Electronic PCB Board Module

Features:

：The upgraded version will always output whether there is a load or not, and the 5V is always on;

：This module is a charging and discharging integrated module, the module has its own lithium battery protection function (suitable for lithium batteries without protection, with protection board), with over-current protection, over-voltage protection, short-circuit protection, and over-temperature protection functions;

：The module has protection functions such as overcurrent and overvoltage, which can better protect the safe use of output devices;

：There are LED indicators on the module to know the working status of the module more intuitively and clearly;

：Products are widely used in vehicle charging transformation, driving recorder power supply, mobile power supply/charging treasure, mobile phones, tablet computers and other portable devices.

Specification:

：Charging voltage: DC 4.5V-5.5V (DC 5V recommended)

：Charging current: 0-2.1A

：Charging quiescent current: 100uA

：Full voltage: 4.2V±1%.

：Discharge current: 0-3.5A;

：Discharge quiescent current: 50uA

：Discharge efficiency: up to 96%

：Output voltage: 5V

：Output current: 0-2.1A

：Ambient temperature: -20° to +85°

：The module comes with lithium battery protection function (applicable to lithium battery without protection, with protection board)

：Over-Current Protection (OCP)

：Overvoltage Protection (OVP)

：Short Circuit Protection (SCP)

：Over Temperature Protection (OTP)

：4-level interval indication of charging and discharging power

Pin description:

：1 VIN: charging port positive input + (DC 4.5V-5.5V (recommended DC 5V)

：2 GND: charging port negative input-

：3 GND: battery management -

：4 BAT : battery management +

：5 GND: Negative output of the output port-

：6 VOUT: output positive output +

：7 KEY: output enable trigger terminal (low pulse trigger)

1. In discharge mode (the KEY function is invalid in charging mode), trigger the KEY port once to turn on the output; trigger the KEY port twice continuously to turn off the output.

：2. When the load is connected for the first time, the output will be turned on automatically. The upgraded version: no matter whether the load is connected or not, the output will always be output, 5V is always on.

：3. It is allowed to discharge while charging (note: at this time, the output voltage is >4.7/<5V)

Instructions for use:

：When the module is charged and connected, the output will switch to the external power supply (the power will be cut off for 0.3s). When charging, the output voltage will be less than >4.7V/<5V, depending on the load capacity of the charger!

：Trigger mode: low level trigger (ground)

：Users who connect to the microcontroller, if they connect the small load KEY, they can connect the microcontroller to a low level for about 20s to make the module continue to work

The difference:

：Standard version: If the load is less than 50MA, the output will be turned off after 30 seconds: if the load is greater than 50MA, the output will be continuously turned on.

：Upgraded version: whether there is a load or not, it will always output, 5V is always on.

Package Contents:

：1X module

Only the above package content, other products are not included.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.