UMW TP4056 Overview
The UMW TP4056 is a highly integrated, single-cell Lithium-ion battery linear charger IC employing a constant current/constant voltage (CC/CV) charging algorithm — the industry-standard approach for safe, accurate Li-ion cell charging. Built around a proprietary internal MOSFET architecture with an integrated anti-reverse charging circuit, the TP4056 eliminates the need for external sense resistors or isolation diodes, minimising BOM component count and simplifying PCB layout. The fixed 4.2V charge termination voltage combined with an externally set charge current resistor gives designers straightforward, reliable control over the charging cycle with minimal firmware overhead.
The UMW TP4056 accepts input voltages from 4V to 6.5V, making it directly compatible with standard USB 5V host ports and common DC adapter rails. An integrated thermal feedback loop automatically reduces charging current if die temperature rises, protecting both the IC and the cell in high-ambient-temperature or high-power-dissipation scenarios. The device supports 0V battery charging, enabling recovery of deeply discharged cells that would otherwise be rejected by chargers with conventional undervoltage lockout thresholds. When the input supply is removed, the TP4056 enters sleep mode with a battery leakage current below 1µA, preserving charge in battery-operated products between use cycles. Shutdown mode reduces quiescent current to 35µA, ideal for always-on portable designs.
Additional protection and monitoring features built into the UMW TP4056 include battery temperature monitoring, undervoltage lockout (UVLO), automatic recharge initiation, and two open-drain status output pins that signal active charging and charge termination states to a host MCU or indicator LED. The compact ESOP-8 package with minimal external components makes the TP4056 a natural choice for space-constrained portable products across consumer, industrial, and IoT segments.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | TP4056 |
| Manufacturer | UMW |
| Input Voltage Range | 4V to 6.5V |
| Charge Termination Voltage | 4.2V (fixed) |
| Charge Current | Externally programmable via resistor (up to 1A typical) |
| Quiescent Current (Iq, shutdown) | 35µA |
| Battery Leakage Current (input removed) | <1µA |
| Charging Topology | Linear CC/CV |
| 0V Battery Charge Support | Yes |
| Thermal Regulation | Yes (automatic current reduction) |
| Status Outputs | 2× open-drain (CHRG, STDBY) |
| Package | ESOP-8 |
| RoHS Compliance | Yes |
Applications
The UMW TP4056 is widely deployed wherever a compact, low-component-count Li-ion charging solution is required from a USB or adapter source. Typical application areas include USB power banks, wireless earbuds and Bluetooth headsets, smartwatches and fitness trackers, portable LED lighting, and compact IoT sensor nodes. Its 0V recovery capability and ultra-low sleep current also make it well suited to small medical wearables, GPS trackers, e-cigarette/vaping devices, and low-cost handheld consumer electronics where maximising battery runtime and shelf life are equally important.
Pin-to-Pin Compatible Alternatives
Selecting a pin-to-pin compatible replacement such as the UMW TP4056 allows procurement and engineering teams to reduce unit cost and diversify supply sources without any PCB redesign or re-qualification effort.
| Reference Part Number | Original Manufacturer | Why Choose UMW TP4056 |
|---|---|---|
| MCP73831 | Microchip Technology | Direct functional replacement at lower unit cost, same single-cell CC/CV architecture in a compatible footprint |
| LTC4054 | Analog Devices (Linear Technology) | Pin-compatible alternative with equivalent USB-compatible input range; significant BOM cost saving at volume |
| MAX1811 | Maxim Integrated (now Analog Devices) | Same ESOP-8 footprint and USB-powered charging function; UMW TP4056 adds 0V battery recovery capability |
| BQ24040 | Texas Instruments | Compatible CC/CV charging topology; UMW TP4056 requires fewer external components for equivalent functionality |
| CN3058E | CONSONANCE | Factory-authenticated UMW supply through ABL Semi ensures traceability and compliance documentation for UK/EU customers |
Frequently Asked Questions
Is UMW TP4056 RoHS compliant?
Yes. The UMW TP4056 is manufactured in full compliance with the RoHS Directive (2011/65/EU), restricting hazardous substances including lead, cadmium, and mercury. RoHS compliance documentation is available upon request through ABL Semi.
What are the pin-to-pin replacements for UMW TP4056?
The UMW TP4056 is a pin-to-pin compatible replacement for several established Li-ion charger ICs including the Microchip MCP73831, ADI LTC4054, Maxim MAX1811, and TI BQ24040. Please refer to the compatibility table above for a specific rationale for each substitution.
What is the minimum order quantity (MOQ) for UMW TP4056?
ABL Semi offers flexible MOQ for UMW TP4056, supporting both prototype quantities and mass production orders. Contact us for current stock and pricing.
What package options are available for UMW TP4056?
The UMW TP4056 is available in the ESOP-8 package (Exposed pad SOP-8), which offers a compact, industry-standard footprint well suited to space-constrained portable PCB designs. Contact ABL Semi to confirm current package availability and lead times.
How is the charge current set on the UMW TP4056?
The charge current on the UMW TP4056 is set by a single external resistor connected to the PROG pin. The relationship between resistor value and charge current is defined in the UMW datasheet — for example, a 1.2kΩ resistor sets approximately 1A of charge current. This approach requires no firmware configuration, making the TP4056 straightforward to implement in both microcontroller-based and purely analogue designs.
For complete product specifications, please refer to: