RT9078-28GJ5
Public Made by Adomby adom
Richtek Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TSOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗PCB Footprint
Open full view ↗Datasheet
Open in new tab ↗Contents
README
markdownRT9078-28GJ5
Richtek Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TSOT-23-5
RT9078-28GJ5 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; absolute max −0.3V to 6.5V. Bypass to GND with a ceramic capacitor close to the pin. |
| 2 | GND | power_in | Device ground reference. Return path for the regulator; carry through a low-impedance path back to the input/output capacitor grounds. |
| 3 | EN | input | Enable control input. VIH ≥ 0.9V enables the regulator; VIL ≤ 0.4V shuts it down (shutdown IQ ~0.1μA). Do not leave floating; IEN ≤ 0.1μA at VEN = 5.5V. Absolute max −0.3V to 6.5V. |
| 4 | NC | unconnected | No internal connection. Base RT9078 part (without SNS); the SNS function is available only on the RT9078N variant. Leave floating or tie to GND. |
| 5 | VOUT | power_out | Regulated output of the LDO. Fixed 2.8V (per '28' suffix), ±2% accuracy, up to 300mA (VIN ≥ 1.7V). Requires ≥1μF ceramic or tantalum output capacitor for stability; discharge resistance ~80Ω when disabled. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | TSOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
RT9078-28GJ5RT9078-28GJ5QZ
CAD (KiCad official)
- Symbol:
RT9078-28GJ5 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: TSOT-23-5 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
rt9078-28gj5.step |
85 KB | You want the bare part, or you mark your own boards. |
rt9078-28gj5-etched.step |
2.5 MB | You want the part with RT9078-28GJ5 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 587 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).