CN3130 from ShangHai Consonance Elec, 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	Charge status indicator. Open-drain output; pulled low by an internal switch while the charger is charging the battery, and goes high-impedance when charging completes. Sink current ~10 mA at V_CHRG=0.3V; leakage <1 uA at V_CHRG=6V.
2	FB	input	Battery voltage sense (feedback) input. Senses the positive terminal of the battery to precisely regulate the constant-voltage charge voltage, compensating for wire/contact resistance between the BAT pin and the cell. An optional resistor between FB and BAT can raise V_REG above 3.3V per V_REG = 3.3 + 3.707e-6 × Rx.
3	BAT	power_out	Battery connection. Sources charge current and the constant-voltage regulation to the battery positive terminal. Draws <3 uA from the battery when V_IN is below the UVLO threshold or in sleep mode.
4	VIN	power_in	Positive supply input, 3.9 V to 6 V operating range (absolute max 6.5 V). Powers the internal circuitry and provides charge current to the battery. When V_IN − V_BAT < 15 mV the part enters low-power sleep mode (I_BAT < 3 uA).
5	GND	power_in	Device ground / power return.
6	ISET	bidirectional	Charge-current program and monitor pin. An external resistor R_ISET from ISET to GND sets the constant charge current: I_CH = (V_ISET × 986) / R_ISET. V_ISET is regulated to 0.36 V in trickle/pre-charge and to 1.205 V in constant-current mode, so the pin voltage can also be read to monitor instantaneous charge current.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

CN3130

CAD (KiCad official)

Symbol: CN3130
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
`cn3130.step`	97 KB	You want the bare part, or you mark your own boards.
`cn3130-etched.step`	1.5 MB	You want the part with `CN3130` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 366 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: ShangHai Consonance Elec datasheet (11 pp, sha256 bbaf782bea98ab1b, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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