TP4066-Shenzhen Yifangda Electronics Co., Ltd

Yifangda Electronics Co., Ltd., Shenzhen

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TP4066

The TP4066 is a complete single-cell lithium-ion battery linear charger using constant current/constant voltage, with reverse polarity protection for both battery and input power. Its ESOP8/DFN2*2-8 package with a heat sink on the bottom and a small number of external components make the TP4066 ideal for portable applications. The TP4066 is suitable for USB power and adapter power. Due to its internal PMOSFET architecture and reverse charge protection, no external isolation diode is required. Thermal feedback automatically adjusts the charging current to limit chip temperature during high-power operation or high ambient temperatures. The full voltage can be set to three levels: 4.35V, 4.2V, and 3.7V. The charging current can be externally set via a resistor. When the charging current drops to 1/10 of the set value after reaching the final float voltage, the TP4066 automatically terminates the charging cycle. When the input voltage (AC adapter or USB power) is removed, the TP4066 automatically enters a low-current state, reducing battery leakage current to below 1µA. The TP4066 can also be placed in shutdown mode when powered, reducing power consumption to 100µA. Other features of the TP4066 include power adaptability, battery temperature detection, undervoltage lockout, automatic recharging, and two LED status pins for indicating charging and completion.

Category：

Topin Microelectronics

Product Description

- Commodity name: TP4066
- 封装: ESOP/DFN2*2
- 品牌: Topin Microelectronics
The TP4066 is a complete single-cell lithium-ion battery linear charger using constant current/constant voltage, with reverse polarity protection for both battery and input power. Its ESOP8/DFN2*2-8 package with a heat sink on the bottom and a small number of external components make the TP4066 ideal for portable applications. The TP4066 is suitable for USB power and adapter power. Due to its internal PMOSFET architecture and reverse charge protection, no external isolation diode is required. Thermal feedback automatically adjusts the charging current to limit chip temperature during high-power operation or high ambient temperatures. The full voltage can be set to three levels: 4.35V, 4.2V, and 3.7V. The charging current can be externally set via a resistor. When the charging current drops to 1/10 of the set value after reaching the final float voltage, the TP4066 automatically terminates the charging cycle. When the input voltage (AC adapter or USB power) is removed, the TP4066 automatically enters a low-current state, reducing battery leakage current to below 1µA. The TP4066 can also be placed in shutdown mode when powered, reducing power consumption to 100µA. Other features of the TP4066 include power adaptability, battery temperature detection, undervoltage lockout, automatic recharging, and two LED status pins for indicating charging and completion.

Lithium battery positive and negative electrode overcharge protection

Vcc Input overcharge protection

Power supply

Old 1000mA Programmable constant current source

For single-cell lithium-ion batteries

Constant current source / Constant voltage operation, with temperature compensation

Can achieve high charging speed

Precisely ± 1% Preset charging voltage

Charging current monitoring signal for battery power detection

Automatic recharging

Dual charging status indication, battery and fault status display

C/10 Charging termination

Trickle charging C/5

Battery leakage current less than when powered off 1uA

2.9V Trickle charging

Soft start prevents inrush current

Battery temperature monitoring function

Using 8 Stone ESOP/DFN2*2 Package

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