TP4056 vs AiP4056: 1 A Li-ion charger alternative with the same ESOP-8 pinout
AiP4056 from I-CORE is a TP4056-compatible 1 A linear Li-ion charger in ESOP-8 with the same 8-pin function assignment, 4.2 V ±1 % float voltage and C/10 termination. Key difference: 4.5–5.5 V input range.
TP4056 is the standard single-cell Li-ion charger on USB-powered boards and charging modules. I-CORE makes a functional equivalent, the AiP4056, in the same ESOP-8 package. The pin functions and charge algorithm match; the input-voltage range does not, which matters for some designs.
Side-by-side comparison
| Parameter | TP4056 | AiP4056SE8.TR (I-CORE) |
|---|---|---|
| Charge current | Up to 1 A, set by RPROG | Up to 1 A, set by RPROG (1.2 kΩ → 1 A, 2.4 kΩ → 500 mA) |
| Charge voltage | 4.2 V | 4.2 V ±1 % |
| Charge profile | Trickle / constant current / constant voltage | Trickle (below 2.9 V) / CC / CV |
| Termination | C/10 | C/10 |
| Input (operating) voltage | 4–8 V (LCSC listing) | 4.5–5.5 V |
| Status outputs | CHRG, STDBY | CHRG, STDBY |
| Pinout (ESOP-8) | 1 TEMP, 2 PROG, 3 GND, 4 VCC, 5 BAT, 6 STDBY, 7 CHRG, 8 CE | Same |
| Protection | Thermal regulation, battery temperature input | Thermal regulation, battery temperature monitoring, BAT reverse-connection protection |
Can I replace TP4056 with AiP4056?
On a USB 5 V design, AiP4056 is a drop-in candidate: the pin functions, PROG resistor value for a given current, status pins and 4.2 V charge voltage match. Check the input voltage first — the AiP4056 datasheet specifies 4.5–5.5 V operation, so boards that feed the charger from 6–8 V need a different solution.
Setting the charge current
In the AiP4056 datasheet, RPROG = 1.2 kΩ gives about 1 A and 2.4 kΩ about 500 mA (IBAT ≈ 1200 / RPROG). The same resistor values are commonly used with TP4056, so the BOM does not change.
Thermal design
Both are linear chargers: at 1 A from a 5 V input the IC dissipates roughly (5 V − VBAT) × 1 A. Solder the exposed pad to copper and let thermal regulation reduce the current if needed.
FAQ
- Is AiP4056 pin-compatible with TP4056?
- Yes. Both ESOP-8 parts use TEMP (1), PROG (2), GND (3), VCC (4), BAT (5), STDBY (6), CHRG (7) and CE (8).
- What input voltage does AiP4056 support?
- The AiP4056 datasheet (2026-07-B6) specifies an operating supply of 4.5–5.5 V, suitable for USB 5 V input.
- Do I need to change the PROG resistor?
- Normally not: 1.2 kΩ gives about 1 A in the AiP4056 datasheet, the same value commonly used with TP4056.
Sources
- I-CORE AiP4056 English datasheet, revision 2026-07-B6
- TOP POWER ASIC TP4056-42-ESOP8 listing on LCSC (C16581): 1 A max, operating voltage 4–8 V, −40 to +85 °C
Figures are from the documents listed; always confirm against the latest datasheets before design-in. TP4056 is a part number of its respective owner and is shown for cross-reference only.