component

RT8471GJ5

Public Made by Adom

by adom

Richtek Tech LED Drivers, TSOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentled-drvrt8471gj5
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Datasheet

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Contents

README

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RT8471GJ5

Richtek Tech · LED Drivers · TSOT-23-5

RT8471GJ5 from Richtek Tech, in a TSOT-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 LX output Switch output terminal. Drain of the internal low-side N-MOSFET (R_DS(on) typ 350 mΩ). Connects to the inductor / freewheeling diode node of the step-down converter. Absolute max: -0.3 V to (VIN + 0.7 V).
2 GND power_in Ground return for the device. Should be connected to a large PCB ground plane for maximum power dissipation.
3 ADJ input Dimming control input. Accepts an analog signal (0.3 V to 1.3 V range, ~1.2 V threshold) for analog PWM dimming, or a digital PWM signal (logic-high ≥ 1.4 V, logic-low ≤ 0.2 V) for direct PWM dimming of the LED string. Float or tie high for full brightness.
4 SENSE input High-side output current sense input. An external sense resistor (Rs) between VIN and SENSE sets the nominal average LED current; the internal comparator regulates to V_SENSE ≈ 100 mV (typ) with ±15% hysteresis. Sense pin input current ≈ 300 nA.
5 VIN power_in Supply input voltage. Operating range 7 V to 36 V (absolute max 40 V). Bypass with a local input capacitor C_IN close to the pin.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package TSOT-23-5
Category LED-drv
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • RT8471GJ5
  • RT8471GJ5GSP
  • RT8471GJ5ZSP
  • RT8471GJ5GFP

CAD (KiCad official)

  • Symbol: RT8471GJ5
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: rt8471gj5-etched.step / rt8471gj5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt8471gj5.step / rt8471gj5.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (15 pp, sha256 b227c8211fadf1dd, retrieved 2026-08-17, tier: manufacturer)
  • 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