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Contents

README

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RT9300AGE

Richtek Tech · LED Drivers · SOT-23-6

RT9300AGE from Richtek Tech, in a SOT-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 EN input Chip Enable (active high) that also powers the IC over its 2.5V to 5.5V supply range; driving it low forces LED1 to LED4 into high impedance, and it must be pulled low (below 0.7V) to disable the device.
2 GND power_in Ground reference for the device and the LED current sinks.
3 LED4 output LED4 cathode connection that sinks a constant current of 20mA (RT9300A) or 15mA (RT9300B) and is high impedance when EN is low.
4 LED3 output LED3 cathode connection that sinks a constant current of 20mA (RT9300A) or 15mA (RT9300B) and is high impedance when EN is low.
5 LED2 output LED2 cathode connection that sinks a constant current of 20mA (RT9300A) or 15mA (RT9300B) and is high impedance when EN is low.
6 LED1 output LED1 cathode connection that sinks a constant current of 20mA (RT9300A) or 15mA (RT9300B) and is high impedance when EN is low.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package SOT-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
LED Sink Current (RT9300A, 20mA variant) 18 20 22 mA 3
EN High-Level Input Voltage VEN_H 2.5 V 3
EN Low-Level Input Voltage VEN_L 0.7 V 3
Operation Voltage Range VEN 2.5 5.5 V 3
Quiescent Current IEN 600 uA ILED = 0 3
LED Current Deviation Matching 5 % 3
Shutdown Current ISHDN 1 uA VEN < 0.4V 3
Supply Input Voltage VIN -0.3 6 V 3
Other pins voltage -0.3 6 V 3
Power Dissipation, PD @ TA = 25°C (SOT-23-6) PD 0.4 W TA = 25°C, SOT-23-6 3
Lead Temperature (Soldering, 10 sec.) 260 °C Soldering, 10 sec. 3
Operation Temperature Range -40 85 °C 3
Junction Temperature 150 °C 3
Storage Temperature Range -65 150 °C 3
ESD Susceptibility HBM 2 kV HBM (Human Body Mode) 3
ESD Susceptibility MM 200 V MM (Machine Mode) 3
Junction Temperature Range -40 125 °C 3
Ambient Temperature Range -40 85 °C 3
Package Thermal Resistance, junction to ambient (SOT-23-6) θJA 250 °C/W SOT-23-6, JEDEC 51-3 single layer test board 3

CAD (KiCad official)

  • Symbol: RT9300AGE
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: rt9300age-etched.step / rt9300age-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt9300age.step / rt9300age.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (9 pp, sha256 61b762a2814dfbf0, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF