component

LGS6305

Public Made by Adom

by adom

Legend Si LED Drivers, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentled-drvlgs6305
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Contents

README

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LGS6305

Legend Si · LED Drivers · SOT-23-6

LGS6305 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 power switch node. Connects externally to the power inductor and the Schottky freewheeling diode (e.g. SS16). Absolute max VSW to GND: -0.3V to +60V. Peak current limit ILIMIT.SW(Peak) ≈ 460mA.
2 GND power_in Device ground / return pin.
3 VCC power_out 5V LDO regulated output pin, rated 7mA (typical), with ~8mA short-circuit current limit. A 1uF-4.7uF ceramic decoupling capacitor must be placed between VCC and GND as close to the pin as possible. Can be used as a supply for external control circuitry.
4 EN input Enable / dimming input. Accepts a PWM dimming signal up to 10kHz. VEN_H ≥ 1.4V (enable), VEN_L ≤ 0.6V (disable). Absolute max to GND: -0.3V to +6V. Tie to VCC for always-on operation.
5 VIN power_in Input supply / current-sense high side. Connects to the LED current-sense resistor RSence (other side goes to CSN). Recommended operating range 12V-60V, absolute max -0.3V to +60V (transient up to 80V).
6 CSN input LED current-sense negative input. Connects to the low side of the external current-sense resistor RSence. Regulated VIN−VCSN ≈ 0.18V; output current IOUT = 0.18V / RSence. CSN bias current ~12uA. Absolute max: (VIN−6V) to (VIN+0.3V).

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.

  • LGS6305

CAD (KiCad official)

  • Symbol: LGS6305
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: lgs6305-etched.step / lgs6305-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lgs6305.step / lgs6305.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Legend Si datasheet (12 pp, sha256 0bbfc17627421303, 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).

Datasheet PDF