component
OB3379ACPA
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
markdownOB3379ACPA
OB(On-Bright Elec) · LED Drivers · SOP-8
OB3379ACPA 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 | VIN | power_in | Power supply input, operating range 9V to 30V with UVLO exit at 8V typ and enter at 7.2V typ. |
| 2 | ADIM | input | Analog dimming input (0V to 5V) whose voltage sets the internal reference that decides the LED current; a capacitor to GND gives external soft start. |
| 3 | HPWM | input | PWM-to-analog dimming input (200Hz to 40kHz) and sleep-mode enable pin, with about 2.5V needed to enable and 1.3V low threshold. |
| 4 | LPF | passive | Filter pin that is left floating for HPWM between 10kHz and 40kHz, or has a capacitor to GND for HPWM between 200Hz and 10kHz to reduce output current ripple. |
| 5 | ZVS | input | Quasi-resonant zero-voltage/demagnetization detection input, rated -0.7V to 35V, with LED open protection threshold of 4V typ. |
| 6 | CS | input | Current sensing terminal connected to the sense resistor, rated -0.3V to 7V, with 0.8V typ OCP threshold and open-pin protection at 2V typ. |
| 7 | GND | power_in | Power ground. |
| 8 | GATE | output | Gate driver output for the external MOSFET, rated -0.3V to 35V. |
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 |
|---|---|---|---|---|---|---|---|
| Input voltage range | Vin | 9 | 30 | V | 5 | ||
| Operating supply current | IVin | 1.1 | 1.3 | mA | Vin=12V,HPWM=5V no load | 5 | |
| Stand by current | IVin_stb | 30 | 40 | uA | HPWM low >15ms sleep mode | 5 | |
| Vin under voltage lockout exit (recovery) | UVLO(OFF) | 7 | 8 | 9 | V | 5 | |
| Vin under voltage lockout enter | UVLO(ON) | 6.2 | 7.2 | 8.2 | V | 5 | |
| Time of leading edge blanking | Tleb | 300 | 400 | 500 | ns | 5 | |
| Max gate off time | Toff max | 504 | 630 | 756 | us | 5 | |
| Max gate on time | Ton max | 40 | 50 | 60 | us | 5 | |
| Reference voltage of Error amplifier | Vth_ea | 245 | 250 | 255 | mV | 5 | |
| Threshold of ZVS pin LED open protection | VthZVS | 3.8 | 4 | 4.2 | V | 5 | |
| VIN, ADIM, HPWM, LPF, GATE to GND | -0.3 | 35 | V | 2 | |||
| ZVS to GND | -0.7 | 35 | V | 2 | |||
| CS to GND | -0.3 | 7 | V | 2 | |||
| Operating Ambient Temp. | TA | -40 | 85 | ℃ | 2 | ||
| Operating Junction Temp. | TJ | -40 | 150 | ℃ | 2 | ||
| Storage Temp. | Tstg | -55 | 150 | ℃ | Min/Max | 2 | |
| Lead Temp. | 260 | ℃ | 10 Sec | 2 | |||
| Vin Voltage | Vin | 9 | 30 | V | 2 | ||
| ADIM Voltage | 0 | 5 | V | 2 | |||
| ZVS Positive Plateau Voltage | 0.6 | V | 0.6V to VthZVS | 2 | |||
| Thermal resistance junction to ambient | RθJA | 150 | ℃/W | SOP8 | 2 | ||
| ADIM Inner Clamp Voltage | VADIM | 250 | mV | ADIM=2.5V | 5 | ||
| ADIM source current | IADIM_up | 1 | uA | 5 | |||
| HPWM Input Threshold high | HPWM(high) | 2.5 | V | High Level | 5 | ||
| HPWM Input Threshold low | HPWM(low) | 1.3 | V | Low Level | 5 | ||
| Sleep mode time | T_sleep | 15 | ms | 5 | |||
| Threshold of over current protection | Vthocp | 0.8 | V | 5 | |||
| Max frequency | F max | 230 | KHz | 5 | |||
| Threshold of diode & Inductor short protection | Vthcs_high1 | 1.5 | V | 5 | |||
| Threshold of CS pin open protection | Vthcs_high2 | 2 | V | 5 | |||
| Temperature of thermal shutdown | TOTP_ON | 150 | ℃ | 5 | |||
| Temperature of thermal shutdown release | TOTP_OFF | 100 | ℃ | 5 | |||
| Gate rise time | Trise | 150 | ns | 1nF load | 5 | ||
| Gate fall time | Tfall | 30 | ns | 1nF load | 5 |
CAD (KiCad official)
- Symbol:
OB3379ACPA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ob3379acpa-etched.step/ob3379acpa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ob3379acpa.step/ob3379acpa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OB(On-Bright Elec) datasheet (11 pp, sha256
c81351519837c583, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).