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TP4054 Lithium-Ion Battery Charging IC | Single Cell Li-Ion/LiPo Charger | SOT-23-5

TP4054 Lithium-Ion Battery Charging IC | Single Cell Li-Ion/LiPo Charger | SOT-23-5

SKU:S500982

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TP4054 linear battery charging IC for single-cell Li-Ion and LiPo batteries with programmable charging current up to 800mA, CC/CV charging, thermal protection, automatic recharge, and SOT-23-5 package.

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The TP4054 is a compact linear battery charging IC designed for charging a single-cell Lithium-Ion (Li-Ion) or Lithium Polymer (LiPo) battery. It implements a constant-current/constant-voltage (CC/CV) charging algorithm and requires only a few external components, making it ideal for portable electronics, IoT devices, wearable products, and DIY battery-powered projects.

The charging current is programmable using a single resistor, while built-in thermal regulation ensures safe operation under high-power conditions. The TP4054 also provides automatic recharge, charge termination, and charge status indication.

Features

  • Designed for single-cell Li-Ion and LiPo batteries
  • Constant Current / Constant Voltage (CC/CV) charging
  • Programmable charging current up to 800mA
  • 4.2V regulated charging voltage
  • Automatic charge termination
  • Automatic battery recharge
  • Built-in thermal regulation
  • Charge status indication output
  • Low external component count
  • Available in compact SOT-23-5 package
Parameter Value
Part Number TP4054
Package SOT-23-5
Battery Type Single Cell Li-Ion / LiPo
Input Voltage 4V to 8V
Charging Voltage 4.2V ±1%
Charging Method Constant Current / Constant Voltage (CC/CV)
Maximum Charging Current Up to 800mA (Programmable)
Charge Termination Automatic
Automatic Recharge Yes
Thermal Protection Yes
Charge Status Output Yes
External Components Minimal
RoHS Compliant Yes

Q: What is the TP4054 IC used for?
A: The TP4054 is a linear charging IC designed to safely charge a single-cell 3.7V Li-Ion or LiPo battery using the CC/CV charging method.

Q: Can the TP4054 charge an 18650 battery?
A: Yes. It supports charging a single-cell 18650 Li-Ion battery when the charging current is set according to the battery's specifications.

Q: What input voltage does the TP4054 require?
A: The TP4054 operates from a regulated 5V DC input, making it ideal for USB-powered charging applications.

Q: What is the maximum charging current?
A: The charging current is programmable using an external resistor and supports up to 800mA, depending on the circuit design and thermal conditions.

Q: Does the TP4054 include battery protection?
A: No. It only controls the charging process. A separate protection IC is required for over-charge, over-discharge, over-current, and short-circuit protection.

Q: What are the common applications of the TP4054?
A: The TP4054 is commonly used in wearable devices, Bluetooth products, IoT devices, portable electronics, USB-powered chargers, and battery-powered embedded systems.

File Name Action
TP4054 - Datasheet(PDF) Download