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OB2273MP

Public Made by Adom

by adom

OB On Bright Elec AC-DC Controllers and Regulators, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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OB2273MP

OB On Bright Elec · AC-DC Controllers and Regulators · SOT-23-6

OB2273MP 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 IC. All signal and power references are measured with respect to this pin.
2 FB input Feedback input pin. The PWM duty cycle is determined by the voltage level into this pin and the current-sense signal at Pin 4 (CS). Input impedance ~16 kOhm; open-loop VFB ≈ 4.2 V. Burst-mode thresholds ~1.175 V (enter) / 1.275 V (exit); power-limiting threshold ~3.7 V.
3 RT bidirectional Dual-function pin. Either connected through an NTC resistor to ground for over-temperature shutdown/latch control, or connected through a Zener to VDD for adjustable over-voltage protection. Sources ~100 uA (IRT); OTP threshold ~1 V; external OVP threshold ~4 V.
4 CS input Current-sense input for cycle-by-cycle peak-current control. Internal current-limit threshold ~0.75 V at zero duty cycle; CS clamp ~0.9 V; leading-edge blanking ~220 ns; input impedance ~40 kOhm.
5 VDD power_in Power supply pin. Recommended operating range 12-25 V; absolute max 30 V DC. UVLO(ON) ~9 V, UVLO(OFF) ~15.3 V. Startup current ~5 uA; operating current ~1.8 mA. Internal Zener clamp ~32 V (Vdd_clamp) and OVP ~28 V.
6 GATE output Totem-pole gate driver output for the external power MOSFET. Output clamp ~12 V; VOH ≥ 6 V @ 20 mA; VOL ≤ 1 V @ 5 mA. Rise/fall times ~175 ns / 85 ns into 1000 pF.

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.

  • OB2273MP
  • OB2273MPAP

CAD (KiCad official)

  • Symbol: OB2273MP
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: ob2273mp-etched.step / ob2273mp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ob2273mp.step / ob2273mp.glb are the bare package body.

Provenance

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

  • Datasheet: OB On Bright Elec datasheet (12 pp, sha256 1b0c18884f0cf7d9, 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