component

OB2353CPA

Public Made by Adom

by adom

OB On Bright Elec AC-DC Controllers and Regulators, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmicob2353cpa
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

PCB Footprint

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

Datasheet

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Download PDF
Contents

README

markdown

OB2353CPA

OB On Bright Elec · AC-DC Controllers and Regulators · SOP-8

OB2353CPA from OB On Bright Elec, in a SOP-8. 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 VDD-G power_in Power supply pin dedicated to the internal gate driver. Maximum input voltage 32V.
2 VDD power_in Chip DC power supply pin. UVLO turn-on ~15.9V, turn-off ~9.7V, OVP ~30V, VDD zener clamp ~32V. Maximum input voltage 32V, max DC current 10mA.
3 FB input Feedback input pin. The PWM duty cycle is determined by the voltage level on this pin combined with the current-sense signal at pin 4 (SENSE). Open-loop voltage ~5.7V; input impedance ~4kOhm. Absolute max -0.3 to 7V.
4 SENSE input Current sense (CS) input pin. Senses the primary switch current via an external sense resistor for cycle-by-cycle current limiting and PWM regulation. Includes leading-edge blanking (~270 ns). Internal current-limit threshold ~0.77V. Absolute max -0.3 to 7V.
5 Drain power_in Drain of the integrated 650V power MOSFET. Connects directly to the primary winding of the flyback transformer. Pins 5 and 6 are tied to the same internal Drain node (paralleled for current handling / thermal).
6 Drain power_in Drain of the integrated 650V power MOSFET (paralleled with pin 5). Connects to the primary winding of the flyback transformer.
7 GND power_in Ground reference for the controller and integrated power stage.
8 NC unconnected No internal connection (per block diagram). The pin-configuration drawing labels this pin GND; if in doubt, tying to GND is safe.

Key specifications

Parameter Value
Manufacturer OB On Bright Elec
Package SOP-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • OB2353CPA
  • OB2353CPACP/A

CAD (KiCad official)

  • Symbol: OB2353CPA
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: ob2353cpa-etched.step / ob2353cpa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ob2353cpa.step / ob2353cpa.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ob2353cpa.step 122 KB You want the bare part, or you mark your own boards.
ob2353cpa-etched.step 2.2 MB You want the part with OB2353CPA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 537 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: OB On Bright Elec datasheet (11 pp, sha256 909b9b10fc1b1e81, 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