TP4056 LITHIUM ION SINGLE CELL CHARGER. #ELERS

The TP4056 is a popular integrated circuit (IC) designed for charging single-cell lithium-ion (Li-ion) batteries. It's widely used in various electronic devices and DIY projects due to its simplicity, efficiency, and affordability.
Key Features:
* Constant Current/Constant Voltage Charging: The TP4056 employs a two-stage charging process:
* Constant Current (CC) Phase: Initially, it delivers a constant current to the battery, rapidly increasing its voltage.
* Constant Voltage (CV) Phase: Once the battery reaches a specific voltage threshold (typically 4.2V), the charger switches to constant voltage mode, maintaining the voltage while the current gradually tapers off as the battery approaches full charge.
* Automatic Recharge: The IC automatically recharges the battery when its voltage drops below a certain threshold.
* Charge Status Indication: The TP4056 provides two status pins to indicate the charging state:
* CHG: This pin is high when the battery is charging.
* BAT: This pin is high when the battery voltage is above a certain threshold (typically 2.9V).
* Overcharge Protection: The IC prevents overcharging by automatically terminating the charging process when the battery reaches full charge.
* Over-Discharge Protection: The IC can be configured to provide over-discharge protection, preventing the battery voltage from dropping too low.
* Thermal Regulation: The TP4056 has built-in thermal regulation to prevent overheating during charging.
Common Applications:
* Power Banks: Charging portable power banks for smartphones, tablets, and other devices.
* Battery Packs for Electronic Devices: Charging battery packs for various electronic devices, such as remote controls, wireless speakers, and IoT devices.
* DIY Projects: Charging custom battery packs for DIY projects like robots, drones, and other electronic gadgets.
Typical TP4056 Module:
A typical TP4056 module includes the IC, a few passive components (resistors and capacitors), and a micro USB port for input power. It also has battery terminals for connection to the Li-ion battery and LED indicators for charging status.
Important Considerations:
* Battery Compatibility: Ensure that the TP4056 is compatible with the type of Li-ion battery you are using (e.g., Li-ion Polymer, LiFePO4).
* Input Voltage: The input voltage to the TP4056 should be higher than the battery voltage to ensure proper charging.
* Current Limit: The TP4056 can be configured to limit the charging current by adjusting a resistor.
* Heat Dissipation: The TP4056 can generate heat during charging, especially at high currents. Proper heat dissipation is essential to prevent damage to the IC and the battery.
By understanding the features and limitations of the TP4056, you can effectively use it to charge Li-ion batteries in various applications.