ME4055AM6G-N from MICRONE, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	CHRG	output	Open-drain charge-status indicator. Internal switch pulls CHRG low while the battery is being charged; high-impedance in all other states. VOL ≈ 0.3 V (max 0.6 V) at ICHRG = 5 mA. Absolute-max pin voltage -0.3 V to 10 V.
2	GND	power_in	Device ground / power return.
3	BAT	power_out	Battery-connection pin. Delivers charge current to the single-cell Li-Ion battery and senses cell voltage for regulation. Float voltage is 4.2 V (ME4055A) or 4.34 V (ME4055D). Absolute-max pin voltage -0.3 V to 10 V; absolute-max pin current 800 mA.
4	VCC	power_in	Chip supply input from adapter or USB. Operating range 4.0 V-9.0 V (recommended ≤5.5 V for full 0.8 A charging). When VCC falls to within 80 mV of VBAT the internal pass device turns off and the part enters sleep mode (battery leakage < 2 µA). UVLO ≈ 3.7 V with ~200 mV hysteresis.
5	STDBY	output	Open-drain charge-termination status indicator. Internal switch pulls STDBY low when the charge cycle has terminated (C/10); high-impedance otherwise. VOL ≈ 0.3 V (max 0.6 V) at ISTDBY = 5 mA. Absolute-max pin voltage -0.3 V to 10 V.
6	PROG	bidirectional	Constant-current program and charge-current monitor. Program the fast-charge current with a resistor RPROG to GND: IBAT = (VPROG / RPROG) × 1270, VPROG ≈ 1.0 V. Voltage on PROG mirrors the actual charge current (÷1270). Absolute-max pin current 1200 µA; internal pull-up ≈ 2 µA.

Key specifications

Parameter	Value
Manufacturer	MICRONE
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

ME4055AM6G-N
ME4055AM6G-NDM6G-N

CAD (KiCad official)

Symbol: ME4055AM6G-N
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`me4055am6g-n.step`	97 KB	You want the bare part, or you mark your own boards.
`me4055am6g-n-etched.step`	2.1 MB	You want the part with `ME4055AM6G-N` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 521 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: MICRONE datasheet (14 pp, sha256 7c380d4bc9fd02c9, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF