TP4056A

Linear Li-ion Battery Charger

The TP4056A is a linear li-ion battery charger from NanJing Top Power. View the full TP4056A datasheet below including key specifications.

TP4056A shares its datasheet with TP4056, whose page lists every part number it covers.

Official TP4056A datasheet (PDF) — the source this page was extracted from.

Manufacturer

NanJing Top Power

TP4056A Key Specifications

Parameter	Value
Charge voltage	4.2V
Input voltage range	4.5V to 5.5V
Max charging current	1A (adjustable)
Supported battery type	Single-cell 18650 and other 3.7V Lithium batteries
Charge termination	Automatic when current drops to 1/10th programmed value
Package	ESOP-8

TP4056A Overview

Part: TPOWER TP4056

Type: Lithium-ion battery linear charger

Description: A single-cell lithium-ion battery linear charger module with constant current and constant voltage charging modes, a 4.2V set charge voltage, 1A adjustable charging current, and protection against overcharging and over-discharging.

Operating Conditions:

Supply voltage: 4.5V to 5.5V
Operating temperature: null
Full charge voltage: 4.2V
Charging current: 1A (adjustable)

Absolute Maximum Ratings:

Max supply voltage: 8V (working input voltage range)
Max continuous current: 1A (charging current)
Max junction/storage temperature: null

Key Specs:

Charge voltage: 4.2V
Input voltage range: 4.5V to 5.5V
Max charging current: 1A (adjustable)
Supported battery type: Single-cell 18650 and other 3.7V Lithium batteries
Protection features: Overcharging, over-discharging
Charge termination: Automatic when current drops to 1/10th programmed value
Package: ESOP-8

Features:

This module can charge and discharge Lithium batteries safely
Suitable for 18650 cells and other 3.7V batteries
Charging current - 1A (adjustable)
Input Voltage: 4.5V to 5.5V
Full charge voltage 4.2V
Protects battery from overcharging and over-discharging
No verse polarity protection

Applications:

Solar Chargers
Digital Cameras
Portable Home Appliances
Cell Phones & Tablets
Charge and Discharge Lithium cells
Commonly used with 18650 Li-ion batteries
Power banks
Used with 5V booster for powering Arduino projects

Package:

ESOP-8

TP4056A Features

This module can charge and discharge Lithium batteries safely
Suitable for 18650 cells and other 3.7V batteries
Charging current - 1A (adjustable)
Input Voltage: 4.5V to 5.5V
Full charge voltage 4.2V
Protects battery from overcharging and over-discharging
No verse polarity protection

TP4056A Applications

Solar Chargers
Digital Cameras
Portable Home Appliances
Cell Phones & Tablets
Charge and Discharge Lithium cells
Commonly used with 18650 Li-ion batteries
Power banks
Used with 5V booster for powering Arduino projects

TP4056A Typical Application

The charging current of the module is set to 1A by default. However, it can be changed by altering the resistor RPROG (R3 on the module) in the circuit diagram. The datasheet for the TP4056 datasheet may be seen below for more information.

TP4056 Application Circuit

The module will automatically stop charging after the Lithium battery is fully charged, and the Red LED will turn off and the Green LED will turn on to signal completion. As illustrated in the pin diagram above, the circuit can now be connected to the Circuit (Load) that must be powered by this battery. The voltage of the battery will be monitored as it is consumed by the circuit by the module (load). When it falls below the crucial level (3.7V), the module will separate your battery from the load and safeguard it from over-discharge.

Other Battery Chargers

SLM6305 – SOLA IC, Li-ion Battery Charger / Synchronous Buck Converter
NPM1300-QEAA-R7 – Nordic Semiconductor, Battery Charger Power Management IC
SY6970QCC – Silergy Corp., Synchronous Buck Charger
MP2639BGR-Z – Monolithic Power Systems, 1S Li-ion Switching Charger with OTG
BQ24075 – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
BQ24075-Q1 – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
BQ24075RGTR – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
BQ24075RGTR.A – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path

All Battery Chargers datasheets

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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