TP4056: 1A Linear Lithium-Ion Battery Charger for Portable Electronics
Battery Management · UMW
Fully Integrated 1A Linear Charger: The TP4056 eliminates external MOSFETs, diodes, and sense resistors, reducing design complexity and PCB space while maintaining efficient lithium-ion charge management. Intelligent Charging with Safety Protections: Its CC/CV algorithm, thermal regulation, trickle charge, and automatic recharge ensure long battery life, safety, and reliable performance across various portable devices. USB-Friendly Design: With its input voltage range and low component count, the TP4056 is ideal for USB-powered products, supporting global consumer electronics and IoT markets.
- Input Voltage Range (VIN)
- USB/wall adapter 4.5V–6.5V
- Float Voltage
- IBAT = 40mA 4.2V (±1%)
- Max Charge Current
- Set via RISET 1000mA
- Trickle Charge Voltage
- VBAT rising 2.9V
- Charge Termination
- 1/10 of programmed current —
- Reverse Battery Current
- VBAT = 4.2V <1µA
- Professional sourcingVetted supply chain with documented traceability
- Genuine partsDocumented traceability on every shipment
- ESD-safe handlingOriginal packaging, moisture controlled
- Worldwide shippingConsolidated freight to 100+ countries
Specifications
Core ratings and package details for this battery management (TP4056). Use the table below when comparing drop-in options or validating a schematic callout.
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Input Voltage Range (VIN) | USB/wall adapter 4.5V–6.5V | UVLO Threshold | VIN rising 3.8V |
| Float Voltage | IBAT = 40mA 4.2V (±1%) | Recharge Threshold | ΔV from float –200mV |
| Max Charge Current | Set via RISET 1000mA | Thermal Limit | Junction temperature 125°C |
| Trickle Charge Voltage | VBAT rising 2.9V | ON Resistance (MOSFET) | Between VIN and BAT 600mΩ |
| Charge Termination | 1/10 of programmed current — | EN High Threshold | Enable charging 1.4V |
| Reverse Battery Current | VBAT = 4.2V <1µA | EN Low Threshold | Disable charging 0.4V |
Product Overview
Product narrative for the UMW part TP4056. Read this before you compare alternates or open an RFQ.
- Fully Integrated 1A Linear Charger: The TP4056 eliminates external MOSFETs, diodes, and sense resistors, reducing design complexity and PCB space while maintaining efficient lithium-ion charge management.
- Intelligent Charging with Safety Protections: Its CC/CV algorithm, thermal regulation, trickle charge, and automatic recharge ensure long battery life, safety, and reliable performance across various portable devices.
- USB-Friendly Design: With its input voltage range and low component count, the TP4056 is ideal for USB-powered products, supporting global consumer electronics and IoT markets.
The TP4056 is a complete single-cell lithium-ion battery charger IC that integrates a constant-current/constant-voltage (CC/CV) charging algorithm, an internal power MOSFET, thermal regulation, and intelligent charge termination. Designed for USB-powered and portable applications, the TP4056 delivers up to 1A charging current, making it an excellent solution for consumer electronics, IoT devices, handheld terminals, power banks, and rechargeable modules. Its ESOP-8 package requires minimal external components—typically just two capacitors and a programming resistor—significantly reducing BOM cost and PCB footprint.
The device features a fixed 4.2V regulation voltage, programmable charging current, automatic recharge, dual-status indication, battery temperature monitoring, and built-in safety protections. With its internal P-channel MOSFET architecture and reverse-blocking protection, the TP4056 eliminates the need for external MOSFETs or diodes. It also incorporates thermal feedback to automatically adjust charge current and prevent overheating during high-power operation or elevated ambient temperatures.
In addition, the TP4056 precisely manages preconditioning for deeply discharged batteries by initiating a trickle charge below 2.9V, seamlessly transitioning into constant-current mode when voltage rises above the threshold. Charge termination occurs when the charge current drops to 1/10 of the programmed value, ensuring optimal battery lifespan and safety. If the battery voltage later falls by approximately 200mV, the device automatically initiates a recharge cycle.
These combined functions make the TP4056 a reliable, efficient, and cost-effective solution for integrating rechargeable lithium-ion batteries into modern portable electronics.
Features
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Up to 1000mA programmable charging current
-
Internal MOSFET eliminates external MOSFET and blocking diode
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Complete CC/CV charging algorithm with ±1% float voltage accuracy
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Internal thermal regulation prevents overheating
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Automatic recharge when VBAT drops below regulated voltage
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Dual-status outputs (STAT1 / STAT2) for charging and charge completion
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C/10 charge termination for safe battery protection
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Trickle charging at 2.9V threshold for deeply discharged cells
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Battery temperature monitoring through NTC (optional)
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Reverse leakage current <1µA when VIN is removed
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Enabled charging when EN is high or floating
Specifications
| Parameter | Conditions / Notes | Typical Value |
|---|---|---|
| Input Voltage Range (VIN) | USB/wall adapter | 4.5V–6.5V |
| Float Voltage | IBAT = 40mA | 4.2V (±1%) |
| Max Charge Current | Set via RISET | 1000mA |
| Trickle Charge Voltage | VBAT rising | 2.9V |
| Charge Termination | 1/10 of programmed current | — |
| Reverse Battery Current | VBAT = 4.2V | <1µA |
| UVLO Threshold | VIN rising | 3.8V |
| Recharge Threshold | ΔV from float | –200mV |
| Thermal Limit | Junction temperature | 125°C |
| ON Resistance (MOSFET) | Between VIN and BAT | 600mΩ |
| EN High Threshold | Enable charging | 1.4V |
| EN Low Threshold | Disable charging | 0.4V |
Applications
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Rechargeable portable devices
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Power banks and mobile power modules
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Bluetooth headsets and audio devices
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Single-cell lithium-ion battery management systems
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MP3/MP4 players
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Smart handheld terminals and PDAs
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USB-powered battery chargers
-
IoT and embedded rechargeable modules
-
Wearable devices
Design Resources
Design articles that mention TP4056, UMW, or the surrounding technology. Start here for selection tips and application notes.
Frequently Asked Questions
4 practical questions buyers ask about TP4056 — availability, specs, and how to request a quote.
What is TP4056?
Fully Integrated 1A Linear Charger: The TP4056 eliminates external MOSFETs, diodes, and sense resistors, reducing design complexity and PCB space while maintaining efficient lithium-ion charge management. Intelligent Charging with Safety Protections: Its CC/CV algorithm, thermal regulation, trickle charge, and automatic recharge ensure long battery life, safety, and reliable performance across various portable devices. USB-Friendly Design: With its input voltage range and low component count, the TP4056 is ideal for USB-powered products, supporting global consumer electronics and IoT markets.
What type of component is TP4056?
TP4056 is a Battery Management from UMW.
What are the key specifications of TP4056?
Input Voltage Range (VIN): USB/wall adapter 4.5V–6.5V; Float Voltage: IBAT = 40mA 4.2V (±1%); Max Charge Current: Set via RISET 1000mA; Trickle Charge Voltage: VBAT rising 2.9V; Charge Termination: 1/10 of programmed current —.
Is TP4056 in stock at MOZ Electronics?
TP4056 is listed as in stock. Order online when a price is shown, or submit an RFQ for volume pricing and lead time.
Sourcing desk
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