CN3058E from ShangHai Consonance Elec, in a SOP-8-EP. 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	TEMP	input	Battery temperature sense input. Connect to the output of an NTC thermistor tied to the battery pack. Charging is paused when V(TEMP) is below 45% or above 80% of VIN (i.e. battery over/under temperature). Tying TEMP to GND disables temperature monitoring. Input current 0.5 µA typ.
2	ISET	passive	Constant-current charge setting and charge-current monitor. Connect an external resistor R_ISET from this pin to GND to program the charge current: ICH = (V_ISET × 1011) / R_ISET. Pin regulates to 1.205 V in CC mode and 0.12 V in precharge (trickle) mode. Charge terminates when V_ISET falls to ~0.12 V (C/10).
3	GND	power_in	Power ground / device substrate return.
4	VIN	power_in	Positive supply input, 3.8 V to 6 V (absolute max 6.5 V). Powers the internal circuitry and the on-chip pass MOSFET that sources charge current to BAT. When (VIN − VBAT) < 10 mV the part enters sleep mode and BAT-pin current drops below 3 µA. UVLO rising threshold ~3.2-3.8 V.
5	BAT	power_out	Battery connection / charge current output. Connect to the positive terminal of the LiFePO4 cell. Sources up to 1 A of charge current from the internal power MOSFET and regulates the CV voltage. Sinks <3 µA from the battery in sleep/UVLO.
6	DONE	output	Open-drain charge-end status output (active-low, bar-DONE). Pulled low internally when the charge cycle has terminated (charge current has fallen to ~10% of programmed value); high-impedance otherwise. Sinks up to 10 mA at 0.3 V; leakage <1 µA at 6 V. Typically drives an indicator LED with an external pull-up resistor.
7	CHRG	output	Open-drain charge-in-progress status output (active-low, bar-CHRG). Pulled low internally while the device is charging the battery; high-impedance otherwise. Sinks up to 10 mA at 0.3 V; leakage <1 µA at 6 V. Typically drives an indicator LED with an external pull-up resistor.
8	FB	input	Kelvin battery-voltage sense input. Connect directly to the battery's positive terminal to accurately regulate the CV charge voltage, bypassing the IR drop between the battery and the BAT pin. An external resistor Rx from FB to BAT can be used to trim/raise the regulation voltage: Vbat = 3.6 + 3.61e-6 × Rx (Ω). Input current typ. 3 µA at VFB = 3.6 V.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	SOP-8-EP
Category	PMIC
Pins	8

CAD (KiCad official)

Symbol: CN3058E
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
3D model: SOP-8-EP (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cn3058e.step`	193 KB	You want the bare part, or you mark your own boards.
`cn3058e-etched.step`	1.6 MB	You want the part with `CN3058E` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 384 faces against 63 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 d5bc7be74eed0721, 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