component

OB3674APJPA-J

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by Ray

OB On Bright Elec PFC Controllers, SOP-7. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)ob3674apjpa-j
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Datasheet

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Contents

README

markdown

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 (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