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ob2358ap

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by Ray

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

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README

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OB2358AP

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

OB2358AP from OB On Bright Elec, in a DIP-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 Internal gate driver power supply. An external resistor between VDD and VDD-G can adjust the internal gate drive strength / Drain falling-edge slope for EMI optimization. Absolute maximum input: -0.3V to 30V.
2 VDD power_in IC DC power-supply input, typically fed from the transformer auxiliary winding. UVLO_OFF (start) ≈15.8V, UVLO_ON (stop) ≈9.7V; internal Zener clamp at ~30V (10 mA continuous max). Startup current ~5 µA, operating current ~1.6 mA.
3 FB input Feedback input from the opto-coupler. PWM duty cycle is set by the FB voltage together with the SENSE signal. Open-loop voltage ~5.7V, zero-duty threshold ~0.8V, input impedance ~4kΩ. Absolute max: -0.3V to 7V.
4 SENSE input Current-sense input from the source resistor of the internal power MOSFET, providing cycle-by-cycle current limiting. Internal current-limit threshold ~0.77V (FB=3.3V) with 270ns leading-edge blanking; input impedance ~40kΩ. Absolute max: -0.3V to 7V.
5 Drain output High-voltage drain of the integrated 600V power MOSFET, connected to the primary winding of the flyback transformer. Pins 5 and 6 are internally tied together and typically bonded to a PCB copper area used as a heatsink.
6 Drain output High-voltage drain of the integrated 600V power MOSFET (paralleled with pin 5). Used to spread current/heat; typically bonded to a copper heatsink area.
7 GND power_in Ground return for the controller and source of the internal power MOSFET. Pins 7 and 8 are internally connected; tie together on the PCB.
8 GND power_in Ground return (paralleled with pin 7). Serves both signal and power MOSFET source return.

Key specifications

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

Ordering variants

  • OB2358AP

CAD (KiCad official)

  • Symbol: OB2358AP
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: DIP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: OB On Bright Elec datasheet (None pp, sha256 a1e426e8919308e7, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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