SLM6600 from SOLA IC, 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	VCC	power_in	Positive input supply voltage (4V to 6V, typ. 5V). Provides power to the internal circuit. When VCC drops within 30mV of BAT pin voltage, the SLM6600(S) enters low-power mode dropping IBAT to less than 2µA. Under-voltage lockout threshold is ~4V.
2	PROG	input	Charge current program pin. The charge current is programmed by connecting a 1% resistor RPROG (RPI) between PROG and GND. Example: 225Ω → 3A, 186Ω → 3.5A, 968Ω → 1A.
3	NSTDBY	output	Open-drain charge-terminated (standby) status output. Pulled low by an internal switch when battery charge is terminated (battery full). Otherwise high impedance. Typically drives a green LED. VOL ≤ 0.6V at 5mA.
4	NCHRG	output	Open-drain charge status output. Pulled low by an internal switch while the battery is charging. Otherwise high impedance. Typically drives a red LED. VOL ≤ 0.6V at 5mA.
5	TS	input	Chip enable and battery temperature sense input. Connect to the NTC sensor divider in the Li-Ion pack. If VTS < 45% VCC (VTS-L) or > 80% VCC (VTS-H), charging is suspended (battery too hot/cold). Tie to VCC to disable temperature sensing. Ground TS to disable the chip and terminate charging.
6	BAT	power_out	Battery connection pin. Connect the positive terminal of the Li-Ion battery here. Provides regulated 4.2V float voltage (±1%) and charge current up to 3A (3.5A max). Draws <2µA in disable/sleep mode.
7	GND	power_in	Ground reference for the device. Connect to system ground; also connect the exposed thermal pad to this ground plane for heat dissipation.
8	LX	output	Switching node - external inductor connection. Output of the internal synchronous buck power stage (P-FET/N-FET, RDS(on) ~50mΩ each) switching at 0.8MHz. Connect a 2.2µH-10µH inductor (3.3µH recommended for 3A) between LX and the BAT-side output capacitor.

Key specifications

Parameter	Value
Manufacturer	SOLA IC
Package	SOP-8-EP
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

SLM6600
SLM6600S

CAD (KiCad official)

Symbol: SLM6600
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8-EP (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`slm6600.step`	122 KB	You want the bare part, or you mark your own boards.
`slm6600-etched.step`	1.9 MB	You want the part with `SLM6600` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 452 faces against 147 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: SOLA IC datasheet (11 pp, sha256 013573357cfa1bf4, 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