UMW TP4057
Full Technical Specifications
13 Parameters| Parameter / Attribute | Specification / Value |
|---|---|
| Mounting | Surface Mount |
| Battery pack voltage | 4.24V |
| Supply voltage | 6.5V |
| Current - charging | Constant - Programmable |
| Charge current - max | 500mA |
| Interface | USB |
| Operating temperature | -40°C ~ 85°C |
| Package | Tape & Reel (TR) Cut Tape (CT) |
| Case | SOT-23-6 |
| Number of cells | 1 |
| Fault protection | Over Temperature |
| Battery chemistry | Lithium Ion |
| Programmable features | Current, Timer, Voltage |
Need Stock or a Drop-in Second-Source for TP4057?
Package: SOP-8 (ESOP-8) / SOT-23-5 / SOT-23-6 · Pin-compatible replacements with immediate Shenzhen spot stock
This is the charger family of a generation of battery products: single-cell Li-ion linear chargers with the MOSFET and reverse-blocking inside, a 4.2V CV target, and charge current set by one resistor - the part behind every power bank teardown, every battery-powered gizmo, and the blue protection modules that taught a million people what battery management is. The selection is a table of three sizes: TP4056 the 1A SOP-8 with thermal pad, TEMP and CE pins; TP4054 the SOT23-5 economy part; TP4057 the SOT23-6 with a second status output. The classic confusion is not between the chips but around them: the "TP4056 protection module" is the chip plus a DW01A and a dual MOSFET - over-discharge and short protection live in that companion circuit, not in the charger.
Verified Pin-Compatible Replacements (3 verified alternatives)
The Small-Package Economy Tier
Shenzhen Spot Stock (24-48h Dispatch)
The compact member: 400-600mA linear charging in SOT23-5 with a single charge-status output and about 3uA standby - the LTC4054-convention design.
Single-cell Li-ion at 4.2V CV; supply from USB rails; charge current set by the PROG resistor (about 1000/R).
The Two-LED Middle Tier
Shenzhen Spot Stock (24-48h Dispatch)
The SOT23-6 member adding a STDBY (charge-complete) status output against the single LED of the 4054: 500-600mA class, same linear design and PROG convention.
Same 4.2V CV single-cell envelope.
The Branded Equivalent of the TP4054 Tier
Shenzhen Spot Stock (24-48h Dispatch)
Microchips member of the same 5-pin linear-charger convention: single-cell 4.2V CV, status output, PROG-set current - the documented cross for the TP4054 in designs that list a branded part.
USB-rail input; program resistor sets current by the same 1000/R convention (confirm the exact coefficient on the datasheet).
Buyer & Quality Checklist for Sourcing Alternatives
- The protection circuit is not the charger: the ubiquitous TP4056 module adds a DW01A protector and a dual MOSFET (FS8205A class) for over-discharge, over-current and short protection. Replacing the TP4056 on such a board leaves the protection layer untouched - and a board without that layer needs it added, not assumed.
- The PROG resistor is the current: about 1000/R for the small tiers and 1100-1200/R for the TP4056 - at 1.2k the TP4056 charges near 1A. Check the actual coefficient on the fitted die datasheet, then the thermal plan: 1A linear charging from 5V dissipates more than a watt in the package, and the ESOP-8 thermal pad exists exactly for that.
- The family lacks CE on the small tiers: designs that gate charging from firmware use the PROG-pull-high trick on the 4054/4057 class, and the CE pin on the TP4056 proper. Verify which method the board expects.
- Junction heat is the real charger limit: linear topology burns (Vin - Vbat) x I inside the chip. The thermal pad and the copper it sits on are the difference between 1A and a hot fold-back.
- The 4.2V target is fixed silicon: cells wanting 4.35V chemistry or LiFePO4 voltages are different parts, not resistor tweaks.
- Fake and relabeled dies are common in this family at module-market prices: charge current and termination behavior (charge to 4.2V, verify the C/10-style cutoff) are the behavioral screen - a module that never terminates or runs cool at "1A" is telling you the die under the marking.
Frequently Asked Technical Questions
Q: What is the difference between TP4056, TP4054 and TP4057?
A: Package and current tier: TP4056 is the 1A SOP-8 with thermal pad, TEMP and CE pins; TP4054 the SOT23-5 400-600mA part with one status LED; TP4057 the SOT23-6 with a second status output. Same linear charging concept, different bodies and budgets.
Q: Does the TP4056 protect the battery?
A: No - it charges. Over-discharge, over-current and short protection come from a companion protector (the DW01A plus dual-MOSFET seen on the classic blue module). A bare TP4056 board without that circuit protects nothing but the charging profile.
Q: How do I set the TP4056 charge current?
A: With the PROG resistor: roughly 1100-1200/R on the TP4056 (so about 1A at 1.2k), with the small tiers using a near identical convention around 1000/R. Then check the heat: the linear stage burns the rail-to-battery difference as watts inside the package.