TOPPOWER TP4054 Li-ion cell charger, 0.4A, SOT-23-5

Product detailed description

TOPPOWER TP4054 Li-ion cell charger, 0.4A, SOT-23-5

The TP4054 is a complete linear charger with constant current or constant voltage mode for single cell lithium ion batteries. The SOT-23-5 housing and low number of external components make the circuit ideal for portable applications.
Due to the internal PMOSFET architecture, no blocking diode is required to prevent negative charging current. The circuit contains thermal feedback regulating the charging current - the temperature during operation or the ambient temperature is monitored. The charging voltage is fixed at 4.2 V and the charging current can be programmed externally using a single resistor. The circuit automatically terminates the charge cycle when the charge current drops to 1/10 of the programmed value after the final float voltage is reached. Other features include a current monitor, under-voltage lockout, automatic recharging and a status pin that indicates the end of charging.
When the input power supply (wall adapter or USB) is disconnected, the circuit automatically goes into a low current state, with the battery discharge current dropping to less than 2uA. The circuit can be put into shutdown mode, reducing the supply current to 45uA. TP4054 datasheet is available in the "Related files" tab

Specifications:

• Input voltage: 4-9V
• Charging current: 0.4A
• Output (charging) voltage: 4.2V
• Operating temperature range: -40 - 85°C
• Case: ESOP-8

Included in delivery:

• 1pc TOPPOWER TP4054 Li-ion cell charger, 0.4A, SOT-23-5

Remark:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustration purposes only and may sometimes differ from the actual appearance of the item. However, this does not change its basic properties.