OB2263MP from OB On Bright Elec, in a SOT-23-6. 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	GND	power_in	Ground return for the chip. All internal references and supply currents return through this pin.
2	FB	input	Feedback input pin. The PWM duty cycle is set by the voltage level on this pin together with the SENSE input. Open-loop voltage ~4.8 V, input impedance ~6 kΩ, zero-duty threshold ~0.75 V, power-limit threshold ~3.7 V.
3	RI	passive	Internal oscillator frequency setting pin. A resistor (typ. 100 kΩ, range 50-150 kΩ) from RI to GND sets the PWM switching frequency (~65 kHz at 100 kΩ). Open-load voltage ~2 V.
4	SENSE	input	Current sense input. Connects to the MOSFET source current-sensing resistor node. Includes ~300 ns leading-edge blanking; OC threshold ~0.75 V at zero duty. Input impedance ~40 kΩ.
5	VDD	power_in	Chip DC power supply pin. Operating range 10-30 V; UVLO on ~8.8 V, UVLO off ~14 V; internal zener clamp ~34 V. Startup current typ. 3 µA, operating current typ. 1.4 mA.
6	GATE	output	Totem-pole gate drive output for the external power MOSFET. Output clamped to ~18 V, VOL <0.8 V @ -20 mA sink, VOH >10 V @ 20 mA source. Typical rise/fall 220 ns / 70 ns into 1 nF.

Key specifications

Parameter	Value
Manufacturer	OB On Bright Elec
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

OB2263MP
OB2263MPAP

CAD (KiCad official)

Symbol: OB2263MP
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ob2263mp.step`	97 KB	You want the bare part, or you mark your own boards.
`ob2263mp-etched.step`	1.9 MB	You want the part with `OB2263MP` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 458 faces against 117 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: OB On Bright Elec datasheet (13 pp, sha256 d8ad0a545345b003, 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