component

OB2202CPA

Public Made by Adom

by adom

OB On Bright Elec AC-DC Controllers and Regulators, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

markdown

OB2202CPA

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

OB2202CPA 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 SS bidirectional Multi-functional soft-start pin. Connect a capacitor from SS to GND for soft-start programming. Also supports external latch triggering by pulling SS above 3.8V (pull-up current > 200uA).
2 FB bidirectional Feedback input. PWM duty cycle is set from the voltage on this pin combined with the CS current-sense signal. Also selects operating mode: QR, PFM (threshold ~1.4-1.5V), or Burst Mode (threshold ~0.5-0.7V). Input impedance ~4 kOhm; open-pin voltage ~5.3V.
3 CS input Current sense input for primary MOSFET current. Internal leading-edge blanking ~350 ns; internal current limit threshold V_TH_OC ~0.60V (0.57-0.63V).
4 GND power_in Ground for internal circuitry. Common return for VCC and signal pins.
5 GATE output Totem-pole gate drive output for external power MOSFET. Peak sink/source capability ~1A; internal clamp ~16.5V; rise/fall times ~50/20 ns at 1nF load.
6 VCC power_in Chip DC power supply pin. Recommended operating range 11-28V. UVLO(ON) ~15.8V (startup), UVLO(OFF) ~8.8V; VCC OVP ~33V; Zener clamp ~34V. Typical operating current ~3 mA switching.
7 DEM bidirectional Demagnetization sense input from transformer auxiliary winding for valley/QR timing. Also used for output over-voltage protection (Load OVP); V_TH_OVP ~3.75V. Clamp voltages -0.5V/+5.8V.
8 BO bidirectional Brownout and Line OVP detection pin. Connect a resistor divider from line voltage. Brownout threshold Vth_BO ~0.5V with 50 ms debounce disables PWM; Line OVP threshold ~2V. Sources ~1 uA for hysteresis programming.

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.

  • OB2202CPA
  • OB2202AP

CAD (KiCad official)

  • Symbol: OB2202CPA
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: ob2202cpa-etched.step / ob2202cpa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ob2202cpa.step / ob2202cpa.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ob2202cpa.step 122 KB You want the bare part, or you mark your own boards.
ob2202cpa-etched.step 2.1 MB You want the part with OB2202CPA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 513 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 (13 pp, sha256 14cfbe26a6ff27da, 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