component
RT9284A-20GJ6E
Public Made by Adomby adom
Richtek Tech LED Drivers, TSOT-23-6. 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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Contents
README
markdownRT9284A-20GJ6E
Richtek Tech · LED Drivers · TSOT-23-6
RT9284A-20GJ6E from Richtek Tech, in a TSOT-23-6. 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 | LX | output | Switch pin that connects to the inductor and catch diode; minimize its track area to reduce EMI, and the datasheet's absolute maximum LX input voltage is 22V. |
| 2 | GND | power_in | Ground pin for the device and the external circuit return; the layout guide calls for a full GND plane without gap breaks. |
| 3 | FB | input | Feedback reference voltage pin; a series resistor between the WLED string and ground sets the LED current (VFB is 1.235V for RT9284A and 0.25V for RT9284B). |
| 4 | EN | input | Active-high chip enable and OVP-related voltage-sense input; it is high impedance, so a 100kΩ pull-down to GND is needed when floating, with VEN < 0.4V for shutdown and VEN > 1.5V for enable. |
| 5 | OVP | input | Over-voltage protection voltage-sensing input (OVP threshold 15V or 20V per ordering option); leave unconnected to disable the OVP function, and the absolute maximum OVP voltage is 22V. |
| 6 | VDD | power_in | Supply input with an operating range of 2.7V to 5.5V; bypass with a 1µF capacitor to GND to reduce input noise. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | TSOT-23-6 |
| Category | LED Drivers |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operation voltage Range | VDD | 2.7 | 5.5 | V | 4 | ||
| Under Voltage Lock Out | VDD | 1.8 | 2.2 | 2.5 | V | 4 | |
| Quiescent Current | IDD | 50 | 300 | 1000 | uA | FB = 1.5V, No switch | 4 |
| Supply Current | IDD | 0.1 | 2 | 3 | mA | FB = 0V, Switch | 4 |
| Shut Down Current | IDD | 1 | uA | VEN < 0.4V | 4 | ||
| Operation Frequency | fOSC | 0.9 | 1.2 | 1.5 | MHz | 4 | |
| Maximum Duty Cycle | 85 | % | 4 | ||||
| Feedback Voltage (RT9284A) | VFB | 1.173 | 1.235 | 1.296 | V | 4 | |
| OVP Threshold (5 WLED application) | VOVP | 19 | 20 | 21 | V | for 5 WLED application | 5 |
| Shut Down Voltage | VEN | 0.4 | V | 5 | |||
| Enable Voltage | VEN | 1.5 | V | 5 | |||
| Supply Input Voltage (recommended) | 2.7 | 5.5 | V | 4 | |||
| Junction Temperature Range (recommended) | -40 | 125 | °C | 4 | |||
| Ambient Temperature Range (recommended) | -40 | 85 | °C | 4 | |||
| Supply Input Voltage | -0.3 | 7 | V | 4 | |||
| LX Input Voltage | -0.3 | 22 | V | 4 | |||
| OVP Voltage | -0.3 | 22 | V | 4 | |||
| The Other Pins | -0.3 | 6 | V | 4 | |||
| Power Dissipation TSOT-23-6 | PD | 0.455 | W | TA = 25°C | 4 | ||
| Package Thermal Resistance TSOT-23-6 | θJA | 220 | °C/W | Note 2: natural convection, TA = 25°C, JEDEC 51-3 test board | 4 | ||
| Lead Temperature (Soldering) | 260 | °C | Soldering, 10 sec | 4 | |||
| Junction Temperature | 150 | °C | 4 | ||||
| Storage Temperature Range | -65 | 150 | °C | 4 | |||
| ESD Susceptibility HBM | 2 | kV | Human Body Model (Note 3) | 4 | |||
| ESD Susceptibility MM | 200 | V | Machine Model (Note 3) | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | for the 1μF MLCC capacitor between Pin6 and Pin2. z Minimized LX node copper area to reduce EMI. | 11 |
CAD (KiCad official)
- Symbol:
RT9284A-20GJ6E - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
rt9284a-20gj6e-etched.step/rt9284a-20gj6e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt9284a-20gj6e.step/rt9284a-20gj6e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (14 pp, sha256
74f23c4c430f9430, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).