TP8006 from TPOWER, in a SOT-89-5L. 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	CS	input	LED output current sense input. A sense resistor Rcs is connected between VIN and CS; the average LED current is set by IOUT = Vcs/Rcs where Vcs is typically 100mV. CS input current is typically 8 uA at VIN-VCS = 50mV.
2	VIN	power_in	Power supply input, 5V to 30V operating range (absolute max 30V). A bypass capacitor must be placed close to the pin and returned to GND. UVLO rising threshold ~4.2V, falling ~4.0V.
3	SW	output	Internal power MOSFET drain (switch node). Connects to the inductor and freewheeling Schottky diode. RDS(on) typically 0.35 ohm; continuous switch current up to 1.2A in ESOP8L. Absolute max SW-to-GND: -0.3 to +30V.
4	NC	unconnected	No internal connection. Leave floating or tie to GND.
5	NC	unconnected	No internal connection. Leave floating or tie to GND.
6	GND	power_in	Device ground. Pins 6 and 7 are both GND and should be tied together on the PCB to the ground plane.
7	GND	power_in	Device ground. Pins 6 and 7 are both GND and should be tied together on the PCB to the ground plane.
8	DIM	input	Enable / dimming input. Accepts both analog dimming (0.5V-2.5V linearly scales IOUT; >2.5V = full scale) and PWM dimming (100 Hz to >20 kHz). VDIM < 0.3V shuts down the internal MOSFET (standby mode, ~80 uA). Internal 200k pull-up to a 5V rail; may be left floating for full output. A capacitor to GND on DIM sets soft-start (~150 us/nF).
EP	PGND	power_in	Exposed thermal pad on the bottom of the ESOP8L package. Connected internally to the chip ground; must be soldered to the PCB ground plane for heat dissipation.

Key specifications

Parameter	Value
Manufacturer	TPOWER
Package	SOT-89-5L
Category	LED-drv
Pins	9

CAD (KiCad official)

Symbol: TP8006
Footprint: Package_TO_SOT_SMD:SOT-89-5
3D model: SOT-89-5L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tp8006.step`	86 KB	You want the bare part, or you mark your own boards.
`tp8006-etched.step`	1.3 MB	You want the part with `TP8006` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 314 faces against 26 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: TPOWER datasheet (10 pp, sha256 fc0161b683b12c75, 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