component
OB5686ACPA
Public Made by Adomby adom
OB On Bright Elec LED Drivers, SOP-8. Pinout cross-checked by two models against 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
markdownOB5686ACPA
OB On Bright Elec · LED Drivers · SOP-8
OB5686ACPA from OB On Bright Elec, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | FB | input | Output voltage feedback input (ITh) used for CV regulation and quasi-resonant detection, with an absolute range of -1 V to 7 V. |
| 2 | GND | power_in | Power ground for the controller and the reference for the CS resistor and BRC network. |
| 3 | NC | unconnected | No internal connection; leave unconnected. |
| 4 | HV | power_in | High-voltage power supply input for the HV start-up circuit, rated -0.3 V to 700 V. |
| 5 | BRC | bidirectional | Line brownout and line over-voltage setting pin; GND gives 140 Vac brownout and 323 Vac OVP, a 10 kΩ to GND disables both, and floating gives 71 Vac brownout and 323 Vac OVP, with an absolute range of -0.3 V to 7 V. |
| 6 | CS | input | Current sense input for cycle-by-cycle current limiting, with an absolute range of -0.3 V to 7 V and 420 ns leading edge blanking. |
| 7 | GATE | output | Gate driver output for the power MOSFET, clamped internally to about 12 V with an absolute range of -0.3 V to 40 V. |
| 8 | VDD | power_in | Power supply for the controller, with UVLO exit at 16.2 V (rising), UVLO entry at 8 V (falling), and an absolute range of -0.3 V to 40 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OB On Bright Elec |
| Package | SOP-8 |
| Category | LED Drivers |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Error Amplifier Reference Voltage | Vref | 2.45 | 2.5 | 2.55 | V | 5 | |
| HV Voltage | HV | -0.3 | 700 | V | 3 | ||
| VDD Voltage | VDD | -0.3 | 40 | V | 3 | ||
| GATE Voltage | GATE | -0.3 | 40 | V | 3 | ||
| CS Input Voltage | CS | -0.3 | 7 | V | 3 | ||
| BRC Input Voltage | BRC | -0.3 | 7 | V | 3 | ||
| FB Input Voltage | FB | -1 | 7 | V | Negative amplitude -1V only when max negative current is less than 10mA (Note 2) | 3 | |
| Min/Max Operating Junction Temperature | TJ | -40 | 150 | ℃ | 3 | ||
| Operating Ambient Temperature | TA | -20 | 85 | ℃ | 3 | ||
| Min/Max Storage Temperature | Tstg | -55 | 150 | ℃ | 3 | ||
| Lead Temperature (Soldering) | 260 | ℃ | 10 s soldering | 3 | |||
| Package thermal resistance, junction to ambient (SOP8) | RθJA | 90 | ℃/W | SOP8 package | 3 | ||
| Static current | IVDD_op | 850 | uA | VDD=20V | 5 | ||
| VDD under voltage Lockout Exit | UVLO_off | 16.2 | V | VDD rising | 5 | ||
| VDD under voltage Lockout Enter | UVLO_on | 8 | V | VDD falling | 5 | ||
| VDD overvoltage protection | VDD_ovp | 32 | V | 5 | |||
| Output overvoltage protection | Vth_ovp | 3.2 | V | 5 | |||
| Output short protection | Vth_scp | 0.4 | V | 5 | |||
| Leading Edge Blanking time | TLEB | 420 | ns | 5 | |||
| Over current threshold voltage | Vth_ocp | 0.6 | V | Ton=0us | 5 | ||
| Maximum Frequency | Fmax | 120 | KHz | 5 | |||
| Minimum off time | Toff_min | 2 | us | 5 | |||
| Maximum off time | Toff_max | 110 | us | 5 | |||
| Maximum on time | Ton_max | 20 | us | 5 | |||
| Minimum frequency | Fmin | 500 | Hz | Rcs_fmin>2.5kohm | 5 | ||
| Line over voltage protection @ startup | Line_ovp_startup | 311 | Vac | 5 | |||
| Line over voltage protection @ normal operation | Line_ovp_normal | 323 | Vac | 5 | |||
| Brown-out | 140 | Vac | RBRC=GND | 5 | |||
| Brown-in | 154 | Vac | RBRC=GND | 5 | |||
| Brown-out | 71 | Vac | RBRC Floating | 5 | |||
| Brown-in | 83 | Vac | RBRC Floating | 5 | |||
| Over temperature protection | OTP | 150 | ℃ | 5 | |||
| Gate output clamping voltage | Vclamp | 12 | V | 5 | |||
| Rising edge time | Tr | 80 | ns | CL=1nF | 5 | ||
| Falling edge time | Tf | 30 | ns | CL=1nF | 5 |
CAD (KiCad official)
- Symbol:
OB5686ACPA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ob5686acpa-etched.step/ob5686acpa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ob5686acpa.step/ob5686acpa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OB On Bright Elec datasheet (12 pp, sha256
80d91c570c87c1f1, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).