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RT9078-18GJ5

Public Made by Adom

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Richtek Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TSOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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RT9078-18GJ5

Richtek Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TSOT-23-5

RT9078-18GJ5 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 VIN power_in Supply voltage input. Operating range 1.2V to 5.5V (abs max -0.3V to 6.5V). Bypass to GND with a ceramic capacitor.
2 GND power_in Device ground reference.
3 EN input Enable control input. Logic-high (VIH >= 0.9V @ VIN=5V) turns on the regulator; logic-low (VIL <= 0.4V) disables output with ~0.1uA shutdown current. Do not leave floating.
4 NC unconnected No internal connection. This part (RT9078, no 'N' suffix) omits the SNS pin; on the RT9078N variant this pin is SNS (output voltage sense).
5 VOUT power_out Regulated output of the LDO. Fixed 1.8V (-18 suffix), up to 300mA when VIN >= 1.7V. Requires >=1uF ceramic or tantalum output capacitor for stability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • RT9078-18GJ5
  • RT9078-18GJ5QZ

CAD (KiCad official)

  • Symbol: RT9078-18GJ5
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: rt9078-18gj5-etched.step / rt9078-18gj5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt9078-18gj5.step / rt9078-18gj5.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
rt9078-18gj5.step 85 KB You want the bare part, or you mark your own boards.
rt9078-18gj5-etched.step 2.4 MB You want the part with RT9078-18GJ5 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 567 faces against 102 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: Richtek Tech datasheet (15 pp, sha256 9337f2d38381f671, 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