CN3387 from ShangHai Consonance Elec, in a SSOP-10. 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	STAT	output	Charge status indicator output (CMOS). Drives high while charging and low when charging has terminated. Can sink/source approximately 10 mA to drive a status LED directly or interface to an MCU input.
2	CE	input	Chip enable input. A high level (>=2.2V) puts CN3387 in normal operation; a low level (<0.7V) disables the chip. Compatible with TTL and CMOS logic levels; do not leave in the 0.7V-2.2V undefined region.
3	FB	input	Battery voltage feedback input. Connects to an external resistor divider (R1/R2) to sense battery voltage per VBAT = VFB x (1 + R1/R2). Constant-current termination threshold Vcct = 1.125V typ; over-voltage / peak threshold 1.205V typ; recharge threshold 1.105V typ.
4	BAT	input	Battery positive-terminal sense input. Connects directly to the battery pack positive terminal for over-voltage protection (Vov = 1.285V typ threshold referred internally). Draws ~5.8 uA typical at VBAT = 12V.
5	GND	power_in	Device ground and return for both the input supply and the battery negative terminal.
6	LDRV	output	External low-side N-channel power MOSFET gate driver output. Sources/sinks up to ~0.65 A peak to switch the boost inductor low-side FET; VOH >= VCC-0.3V at 5 mA, VOL <= 0.3V at -5 mA.
7	HDRV	output	External high-side P-channel power MOSFET gate driver output for battery-short / low-battery protection topology (Figure 2). Sources/sinks up to ~0.8 A peak; VOH >= VCC-0.3V at 5 mA, VOL <= 0.3V at -5 mA. Leave unconnected when the external PMOS is not used (Figure 1 topology).
8	VIN	power_in	Positive supply input for the internal circuitry (2.7V to 6.5V) and also the positive input for the inductor current sense comparator. Quiescent current 300 uA typ (no switching); shutdown current 0 uA typ when CE is low.
9	CSN	input	Negative input of the inductor (input) current sense comparator. An external sense resistor Rcs is placed between VIN and CSN. In constant-current mode the upper (VIN-CSN) threshold is 125 mV typ and the lower threshold is 85 mV typ.
10	CT	passive	Timing-capacitor connection. A capacitor C2 (>1 nF) from CT to GND sets the maintenance-charge timeout per T(s) = 12.18e9 x C2. Timer starts when CN3387 enters top-off/maintenance mode and terminates charging on expiry.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	SSOP-10
Category	PMIC
Pins	10

Ordering variants

Same part, different packaging or reel option.

CN3387

CAD (KiCad official)

Symbol: CN3387
Footprint: Package_SO:SSOP-10_3.9x4.9mm_P1.00mm
3D model: SSOP-10 (KiCad packages3D, STEP)

Provenance

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

Datasheet: ShangHai Consonance Elec datasheet (13 pp, sha256 f6116a5972c222f1, 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