CN3153 from ShangHai Consonance Elec, in a ESOP-8. 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	PREC	input	Trickle (pre-charge) current select. Tie to GND for trickle current = 10% of programmed CC current; tie to VIN for trickle current = 100% of programmed CC current. VHIGH threshold >= 80% of VIN, VLOW <= 0.6V, IPREC <= 0.5µA.
2	ISET	passive	Constant-current programming and charge-current monitor pin. Connect a resistor RISET from ISET to GND to set the CC charge current: ICH = 1218V / RISET (e.g. 1.22kΩ → ~1A). Pin voltage is regulated to 1.205V in CC mode and to 0.12V in trickle mode (when PREC=GND). Charge current may be monitored via ICH = (VISET × 1011) / RISET.
3	GND	power_in	Power ground (电源地). Common ground return for the input supply, ISET resistor, and battery negative terminal.
4	VIN	power_in	Positive input supply, 3.8V to 6.5V operating range. UVLO trips at ~3.2V (typ). When VIN - VBAT < 10mV the device enters low-power sleep mode with IBAT < 3µA. Bypass with at least 1µF to GND close to the pin.
5	BAT	power_out	Battery connection. Sources CC/CV charge current to the single-cell Li-ion battery positive terminal. Delivers up to 1A (SOP8/PP package) or 500mA (plain SOP8). Bypass to GND with 4.7µF-10µF for loop stability; if long wiring is used, add ~0.5-1Ω in series with the output cap to damp LC oscillation.
6	DONE	output	Open-drain charge-complete indicator (active low). Pulled low when the charge current falls below 10% of the programmed CC current, indicating end-of-charge; otherwise high-impedance. Sinks up to 10mA (VDONE=0.3V); leakage ≤1µA at 6V. Tie to GND if unused.
7	CHRG	output	Open-drain charge-in-progress indicator (active low). Pulled low while CN3153 is charging; otherwise high-impedance. Sinks up to 10mA (VCHRG=0.3V); leakage ≤1µA at 6V. Tie to GND if unused.
8	FB	input	Battery-voltage Kelvin sense input. Connect directly to the battery positive terminal to remove wiring/contact IR drop from the CV regulation loop. CV target is 4.2V (±1%); an optional resistor Rx from FB to BAT raises Vbat by Vbat = 4.2 + 3.61e-6 × Rx. IFB ≈ 3µA (typ) in normal charge; leaving FB floating forces trickle mode.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

CN3153SOP8/PP
CN3153SOP8

CAD (KiCad official)

Symbol: CN3153
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
3D model: ESOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cn3153.step`	125 KB	You want the bare part, or you mark your own boards.
`cn3153-etched.step`	1.6 MB	You want the part with `CN3153` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 392 faces against 152 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 cb36e3adf1c4bff4, 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