TP4056 Standalone Linear Li-Lon Battery Charger: Datasheet, Schematics and Current

The TP4056 module is a lithium-ion battery linear charger. This module is capable of charging single-cell batteries. Most importantly, it offers to charge modes with constant current and constant voltage. The TP4056 is also a battery charger with a 4.2-volt set charge voltage.

TP4056 Pinout

• This module can charge and discharge Lithium batteries safely

• Suitable for 18650 cells and other 3.7V batteries

• Charging current – 1A (adjustable)

• Input Voltage: 4.5V to 5.5V

• Full charge voltage 4.2V

• Protects battery from overcharging and over-discharging

• No verse polarity protection

TP4056A (only charging), TP541

• Solar Chargers

• Digital Cameras

• Portable Home Appliances

• Cell Phones & Tablets

• Charge and Discharge Lithium cells

• Commonly used with 18650 Li-ion batteries

• Power banks

• Used with 5V booster for powering Arduino projects

The charging current of the module is set to 1A by default. However, it can be changed by altering the resistor RPROG (R3 on the module) in the circuit diagram. The datasheet for the TP4056 datasheet may be seen below for more information.

TP4056 Application Circuit

The module will automatically stop charging after the Lithium battery is fully charged, and the Red LED will turn off and the Green LED will turn on to signal completion. As illustrated in the pin diagram above, the circuit can now be connected to the Circuit (Load) that must be powered by this battery. The voltage of the battery will be monitored as it is consumed by the circuit by the module (load). When it falls below the crucial level (3.7V), the module will separate your battery from the load and safeguard it from over-discharge.

It is ideal for charging 18650 cells and other 3.7V batteries because of its capacity to supply 4.2V. Because it only requires a few external components, it can be used in portable applications. Mobile phones, tablets, laptops, cameras, power banks, and a variety of other electronic gadgets all consume batteries; hence this module is used to charge them. This module can also be utilized with a USB port and a wall adaptor.

The TP4056 module is powered by a 5V supply from a micro USB cable or the IN+ and IN- solder pads. For the charger to correctly charge a battery connected at the output terminals, a current of at least 1A is necessary. Connect the B+ and B- connections to the cell you want to charge. The battery's power is supplied through the OUT+ and OUT- pads. As a result, if you're running a load, you can attach it to these two pads. But remember to disconnect the load from the module if you're charging a cell.

TP4056 Connection Schematic

TP4056 Dimension