component
OB25136CCPA
Public Unreviewedby Ray
OB On Bright Elec AC-DC Controllers and Regulators, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownOB25136CCPA
OB On Bright Elec · AC-DC Controllers and Regulators · SOP-8
OB25136CCPA 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 | FB | input | Voltage feedback input from the auxiliary winding. Connect through a resistor divider from the auxiliary winding; the sampled voltage reflects the output voltage for primary-side regulation. Reference threshold Vref_fb = 2.500V (typ). |
| 2 | GND | power_in | Device ground return. Common reference for VDD, FB and CS. |
| 3 | VDD | power_in | Chip power supply, typically fed from the transformer auxiliary winding through a rectifier. Recommended operating range 5-16V; UVLO(OFF)=13V typ, UVLO(ON)=3.7V typ, VDD OVP=18V typ, absolute max 20V. |
| 4 | CS | input | Current sense input from the primary-side sense resistor Rs (BJT emitter path). Sets the CC point and peak switch current; on-time OCP threshold ramps from 500mV to 555mV (typ) with leading-edge blanking of 0.33us. |
| 5 | C | passive | Collector of the internal high-voltage power BJT (Vcbo=750V, Ic peak=1.6A). Connect to the transformer primary winding return; tie all four collector pins (5,6,7,8) together for current handling and heat dissipation. |
| 6 | C | passive | Collector of the internal high-voltage power BJT (Vcbo=750V, Ic peak=1.6A). Connect to the transformer primary winding return; tie all four collector pins together. |
| 7 | C | passive | Collector of the internal high-voltage power BJT (Vcbo=750V, Ic peak=1.6A). Connect to the transformer primary winding return; tie all four collector pins together. |
| 8 | C | passive | Collector of the internal high-voltage power BJT (Vcbo=750V, Ic peak=1.6A). Connect to the transformer primary winding return; tie all four collector pins together. |
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.
OB25136CCPAOB25135CCPAOB25135CCP
CAD (KiCad official)
- Symbol:
OB25136CCPA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OB On Bright Elec datasheet (10 pp, sha256
4a6cfc3c9ae70757, 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).