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TP4056
The TP4056 is a complete single-cell lithium-ion battery constant current/constant voltage linear charger. Its ESOP8/MSOP8 package with a heat sink on the bottom and a small number of external components make the TP4056 ideal for portable applications. The TP4056 can work with USB power and adapter power. The TP4056 uses an internal PMOSFET architecture and includes reverse charge protection, eliminating the need for an external isolation diode. Thermal feedback automatically adjusts the charging current to limit chip temperature during high-power operation or high ambient temperatures. The charging voltage is fixed at 4.2V, while the charging current can be set externally via a resistor. The TP4056 automatically terminates the charging cycle when the charging current drops to 1/10 of the set value after reaching the final float voltage. When the input voltage (AC adapter or USB power) is removed, the TP4056 automatically enters a low-current state, reducing battery leakage current to below 2µA. The TP4056 can also be placed in shutdown mode when powered to reduce power consumption to 55µA. Other features of the TP4056 include battery temperature detection, undervoltage lockout, automatic recharge, and two LED status pins to indicate charging and completion.
Category：
- Product Description
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- Commodity name: TP4056
- 封装: ESOP/EMSOP
- 品牌: Topin Microelectronics
The TP4056 is a complete single-cell lithium-ion battery constant current/constant voltage linear charger. Its ESOP8/MSOP8 package with a heat sink on the bottom and a small number of external components make the TP4056 ideal for portable applications. The TP4056 can work with USB power and adapter power. The TP4056 uses an internal PMOSFET architecture and includes reverse charge protection, eliminating the need for an external isolation diode. Thermal feedback automatically adjusts the charging current to limit chip temperature during high-power operation or high ambient temperatures. The charging voltage is fixed at 4.2V, while the charging current can be set externally via a resistor. The TP4056 automatically terminates the charging cycle when the charging current drops to 1/10 of the set value after reaching the final float voltage. When the input voltage (AC adapter or USB power) is removed, the TP4056 automatically enters a low-current state, reducing battery leakage current to below 2µA. The TP4056 can also be placed in shutdown mode when powered to reduce power consumption to 55µA. Other features of the TP4056 include battery temperature detection, undervoltage lockout, automatic recharge, and two LED status pins to indicate charging and completion.
Programmable charging current up to 1000mANo MOSFET, sense resistor, or isolation diode requiredComplete single-cell Li-ion battery charger in SOP packageChargerConstant current/constant voltage operation with thermal regulation to maximize charge rate without overheating riskThermal regulation capabilityThermal regulation capability4.2V preset charge voltage with ±1% accuracyCharge current monitor output for battery charge detectionAutomatic rechargeDual output for charging status, no battery, and fault indicationC/10 charge termination55uA supply current in standby mode2.9V trickle chargeSoft-start limits inrush currentBattery temperature monitoring function8-pin ESOP/EMSOP package
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