TPS61040DBVRG from HANSCHIP semiconductor, in a SOT-23-5. 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	SW	power_out	Switch node; drain of the internal N-channel power MOSFET. Connect the boost inductor and the Schottky rectifier diode to this pin. Absolute maximum switch voltage is 30 V.
2	GND	power_in	Device ground reference. All internal grounds and the network ground terminal for absolute-maximum voltage references.
3	FB	input	Feedback input to the error comparator. Connect to the external output resistor divider to program the output voltage; internal reference VREF = 1.233 V. Absolute maximum: -0.3 V to VIN + 0.3 V.
4	EN	input	Active-high enable input. Pulling EN to ground puts the device into shutdown, reducing supply current to less than 1 uA (typ). Must be terminated (not left floating). Absolute maximum: -0.3 V to VIN + 0.3 V.
5	VIN	power_in	Supply voltage input. Operating range 1.8 V to 6 V; absolute maximum -0.3 V to 7 V. Bypass with a 4.7 uF (typ) ceramic capacitor close to the pin. Undervoltage lockout trips near 1.5 V.

Key specifications

Parameter	Value
Manufacturer	HANSCHIP semiconductor
Package	SOT-23-5
Category	LED-drv
Pins	5

Ordering variants

Same part, different packaging or reel option.

TPS61040DBVRG

CAD (KiCad official)

Symbol: TPS61040DBVRG
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tps61040dbvrg.step`	85 KB	You want the bare part, or you mark your own boards.
`tps61040dbvrg-etched.step`	2.5 MB	You want the part with `TPS61040DBVRG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 607 faces against 102 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: HANSCHIP semiconductor datasheet (19 pp, sha256 4d1a0bbce7677c8d, 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