What is the lithium battery charge management chip TP4056?

Do you know the lithium battery charge management chip TP4056? What does it do? It is mainly composed of a lithium battery charge management chip TP4056 and external discrete devices. TP4056 is a chip developed for single-cell lithium battery charging management. It only requires a few external discrete components to build and complete. Therefore, it is often directly made into Electronic modules and sold by major electronic distributors, which greatly facilitates various electronics Used by hobbyists.

Do you know the lithium battery charge management chip TP4056? What does it do? It is mainly composed of a lithium battery charge management chip TP4056 and external discrete devices. TP4056 is a chip developed for single-cell lithium battery charging management. It only requires a few external discrete components to build and complete. Therefore, it is often directly made into electronic modules and sold by major electronic distributors, which greatly facilitates various electronics Used by hobbyists.

What is the lithium battery charge management chip TP4056?

TP4056 introduction

TP4056 is a complete single-cell lithium-ion battery with constant current/constant voltage linear charger. The SOP8 package with a heat sink on the bottom and a small number of external components make the TP4056 an ideal choice for portable applications. TP4056 can work with USB power supply and adapter power supply.

Due to the internal PMOSFET structure and the anti-reverse charging circuit, no external isolation diode is required. Thermal feedback can automatically adjust the charging current to limit the chip temperature under high-power operation or high ambient temperature conditions. The charging voltage is fixed at 4.2V, and the charging current can be set externally through a resistor. When the charging current drops to 1/10 of the set value after reaching the final float voltage, TP4056 will automatically terminate the charging cycle.

When the input voltage (AC adapter or USB power supply) is removed, the TP4056 automatically enters a low current state, reducing the battery leakage current to less than 2uA. TP4056 can also be put into shutdown mode when there is power supply, so as to reduce the supply current to 55uA. Other features of the TP4056 include battery temperature detection, undervoltage lockout, automatic recharging, and two LED status pins for indicating charging and completion.

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