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OB3674APJPA-J
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OB On Bright Elec PFC Controllers, SOP-7. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+55@@ -0,0 +1,55 @@+# OB3674APJPA-J++**OB On Bright Elec** · PFC Controllers · SOP-7++OB3674APJPA-J from OB On Bright Elec, in a SOP-7. 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 | VAC | output | Boost mode set pin. Connect to a resistor divider from the rectified system input for follower boost mode, or leave floating for constant boost mode. Rated -0.7 V to +7 V (absolute max). |+| 2 | INV | input | Inverting input of the internal Error Amplifier. Connect a resistor divider from the boost output to program the regulated system output voltage. Rated -0.7 V to +7 V (absolute max). |+| 3 | GND | power_in | Ground reference pin for the controller and integrated power MOSFET source return. |+| 4 | VDD | power_in | DC supply voltage for the controller. Absolute maximum rating -0.3 V to +20 V; requires a bypass capacitor to GND and a Zener/UVLO clamp on the supply rail. |+| 5 | DRAIN | output | Drain of the integrated power MOSFET (switching node to the PFC boost inductor). Pins 5 and 6 are tied together internally on SOP-7. Rated -0.3 V to DRAIN_BV (500 V, per 'J' suffix). |+| 6 | DRAIN | output | Drain of the integrated power MOSFET (switching node to the PFC boost inductor). Pins 5 and 6 are tied together internally on SOP-7. Rated -0.3 V to DRAIN_BV (500 V, per 'J' suffix). |+| 7 | CS | input | Current sense input. Connect to an external current-sense resistor from the MOSFET source return to program cycle-by-cycle over-current protection and provide the PWM current-mode ramp. Rated -0.7 V to +7 V (absolute max). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | OB On Bright Elec |+| Package | SOP-7 |+| Category | Power Management (PMIC) |+| Pins | 7 |++## Ordering variants++Same part, different packaging or reel option.++- `OB3674APJP-J`+- `OB3674APJPA-J`+- `OB3674ATJP-J`+- `OB3674ATJPA-J`+- `OB3674ATCCP-J`+- `OB3674ATCCPA-J`+- `OB3674AUCCP-J`+- `OB3674AUCCPA-J`++## CAD (KiCad official)++- Symbol: `OB3674APJPA-J`+- Footprint: `Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm`+- 3D model: SOP-7 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [OB On Bright Elec datasheet](docs/ob3674apjpa-j-datasheet.pdf) (12 pp, sha256 `fcca0b97796cadee`, 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](docs/ob3674apjpa-j-datasheet.pdf)
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