component
OB3636AMP
Public Made by Adomby adom
OB On Bright Elec LED Drivers, SOT-23-6. Pinout extracted from the datasheet, 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
markdownOB3636AMP
OB On Bright Elec · LED Drivers · SOT-23-6
OB3636AMP from OB On Bright Elec, in a SOT-23-6. 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 from auxiliary winding. Connected to a resistor divider from the auxiliary winding to reflect the output voltage; also used for quasi-resonant valley detection (new PWM cycle initiated when FB falls below ~0V). Absolute max -0.3 to 7V. |
| 2 | GND | power_in | Power ground. Return for VDD supply, CS sense resistor, CMP compensation capacitor, and FB divider. |
| 3 | VDD | power_in | Power supply pin. UVLO(OFF) turn-on threshold ~22.5V (VDD rising), UVLO(ON) turn-off threshold ~8.1V (VDD falling). VDD OVP at ~32V typical. Absolute max 40V. Start-up current ~3uA typ; operating current ~850uA typ at VDD=20V. |
| 4 | GATE | output | Gate driver output for external power MOSFET. Internally clamped to 12V typ to protect MOSFET gate. Rise time 80ns, fall time 30ns with CL=1nF. Absolute max -0.3 to 40V. |
| 5 | CS | input | Current sense input. Connect an external sense resistor between the MOSFET source and GND to this pin for cycle-by-cycle current limiting. Internal 300ns leading edge blanking suppresses turn-on spikes; OCP threshold ~0.7V typ (at Ton=0us). Absolute max -0.3 to 7V. |
| 6 | CMP | output | Loop compensation pin, internally connected to the error amplifier (transconductance ~40uS) output. A capacitor between CMP and GND sets loop bandwidth (<20Hz to suppress AC line ripple). Absolute max -0.3 to 7V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OB On Bright Elec |
| Package | SOT-23-6 |
| Category | LED-drv |
| Pins | 6 |
Ordering variants
Same part, different packaging or reel option.
OB3636AMP
CAD (KiCad official)
- Symbol:
OB3636AMP - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OB On Bright Elec datasheet (10 pp, sha256
e5a0e38b2dd607ab, 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).