component

RT5789BGJ8F

Public Made by Adom

by adom

Richtek Tech DC-DC Converters, TSOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)rt5789bgj8ffactory-2.0.0extractor-text
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rt5789bgj8f-hero.glb rt5789bgj8f: hero GLB from the etched model (keeps the MPN mark) · Ray 1h ago
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RT5789BGJ8F

Richtek Tech · DC-DC Converters · TSOT-23-8

RT5789BGJ8F from Richtek Tech, in a TSOT-23-8. 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 PGOOD output Open-drain power-good indication output that is activated only after soft-start is finished.
2 VIN power_in Power input with an input voltage range of 2.5V to 6V; connect a bypass capacitor typically greater than 10µF between this pin and PGND, placed as close to the IC as possible.
3 LX power_out Switch node between the internal switch and the synchronous rectifier; connect the output LC filter from this pin to the output load.
4 PGND power_in Power ground, connected to analog ground, that must be soldered to a large PCB copper area for maximum power dissipation.
5 VOUT input Output voltage sense input used to monitor and adjust the output voltage for improved load transient regulation.
6 AGND power_in Analog ground providing the return path for control circuitry and the internal reference, to be connected to a clean inner GND point with a separate trace.
7 FB input Feedback voltage input connected to the midpoint of the external resistive divider; the device regulates FB to a typical 0.6V reference.
8 EN input Enable control input where a logic-high enables the converter and a logic-low forces shutdown mode.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package TSOT-23-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: RT5789BGJ8F
  • Footprint: Package_TO_SOT_SMD:TSOT-23-8
  • 3D model: TSOT-23-8 (KiCad packages3D, STEP)
  • 3D model files: rt5789bgj8f-etched.step / rt5789bgj8f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt5789bgj8f.step / rt5789bgj8f.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (24 pp, sha256 3724d935031b0e0f, retrieved 2026-10-09, 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