component
LGS63030B6
Public Unreviewedby Ray
Legend Si LED Drivers, SOT-23-6. Datasheet-verified pinout, 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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Contents
README
markdownLGS63030B6
Legend Si · LED Drivers · SOT-23-6
LGS63030B6 from Legend Si, 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 | SW | output | Internal low-side N-channel power switch node (350mΩ typ RDS(on), 3A absolute max, up to 60V). Connect the external boost inductor and Schottky freewheeling diode here. |
| 2 | GND | power_in | Device ground return for the power switch and control circuitry. All voltages in the datasheet are referenced to GND. |
| 3 | FB | input | Current-sense feedback input. Regulated to VFB = 0.2V (typ, 0.195-0.205V); LED current is set by IOUT = VFB / RSENSE via an external sense resistor to GND. Absolute max −0.3V to +6V; typical FB bias current 50nA. |
| 4 | EN | input | Enable / dimming input. Drive high (>0.5V rising) to enable the boost converter, low (<0.4V falling) for low-power sleep. Accepts DC voltage for analog dimming (0.6-1.2V range on LGS63030) or a PWM square wave (100Hz-1kHz) for digital dimming. Internal ~800kΩ pull-down; absolute max −0.3V to +6V. |
| 5 | OVP | input | Output overvoltage-protection sense input. Tie to a resistor divider from VOUT to GND; trigger threshold 1V typ (rising), 0.86V (falling). Set VOUT_OVP = (1 + R1/R2) × 1V; recommended 1.3-1.5× nominal VOUT. Absolute max −0.3V to +6V - keep the pin below 1V in normal operation. |
| 6 | VIN | power_in | Main power input, 3.0-60V (absolute max −0.3V to +60V). UVLO rises ~3.0V, falls ~2.6V. Bypass with a 4.7µF or larger X5R/X7R ceramic capacitor placed as close to VIN and GND as possible. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Legend Si |
| Package | SOT-23-6 |
| Category | LED-drv |
| Pins | 6 |
Ordering variants
Same part, different packaging or reel option.
LGS63030B6LGS63030B6EP
CAD (KiCad official)
- Symbol:
LGS63030B6 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lgs63030b6.step |
97 KB | You want the bare part, or you mark your own boards. |
lgs63030b6-etched.step |
2.6 MB | You want the part with LGS63030B6 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 606 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Legend Si datasheet (20 pp, sha256
f40f2a466f0716f8, 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).