component
OC7141
Public Made by Adomby adom
OCX LED Drivers, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownOC7141
OCX · LED Drivers · SOT-23-5
OC7141 from OCX, in a SOT-23-5. 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 | GND | power_in | Chip ground reference. Connect to system ground and route the CS sense-resistor return trace short and wide to this pin to minimize output-current error. |
| 2 | CS | input | LED current-set pin. Sense voltage V_CS is regulated to a typical 100 mV (96-104 mV); output current I_LED = 100 mV / R_CS. Use a 1% resistor for accuracy. |
| 3 | VDD | power_in | Chip supply, 2.5 V to 6 V. Bypass with 1-4.7 µF close to the pin. For higher rail voltages, clamp with an external Zener so VDD stays ≤ 6 V (supply rail extendable to 400 V+). Quiescent current typ. 60 µA. |
| 4 | DRV | output | Gate-drive output for the external NMOS pass transistor. The internal error amplifier modulates DRV so that V_CS = 100 mV, regulating LED current from 10 mA up to 3 A. |
| 5 | DIM | input | PWM dimming input. Logic high (≥0.7·VDD) enables normal LED output; logic low (≤0.3·VDD) turns the LED off. Supports PWM up to 10 kHz; ≤1 kHz recommended for best linearity. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OCX |
| Package | SOT-23-5 |
| Category | LED-drv |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
OC7141 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
oc7141-etched.step/oc7141-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);oc7141.step/oc7141.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OCX datasheet (6 pp, sha256
6c0efd194ffe82d5, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).