component
RT5785AGJ8F
Public Made by Adomby adom
Richtek Tech DC-DC Converters, TSOT-23-8. 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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README
markdownRT5785AGJ8F
Richtek Tech · DC-DC Converters · TSOT-23-8
RT5785AGJ8F 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 indicator output that is pulled to ground when the output voltage is lower or higher than its specified threshold under UVP, OTP, dropout, EN shutdown, or during slow start. |
| 2 | VIN | power_in | Supply input for the internal control circuit and power switches, driven with 2.5V to 6V and bypassed to PGND with a suitably large capacitor. |
| 3 | LX | passive | Switch node that supplies power to the output and connects to the output LC filter between LX and the load. |
| 4 | PGND | power_in | Power ground that must be soldered to a large PCB and connected to analog ground for maximum power dissipation. |
| 5 | VOUT | input | Output voltage sense input used to monitor and adjust output voltage for superior load transient regulation. |
| 6 | AGND | power_in | Analog ground providing the return path for control circuitry and the internal reference. |
| 7 | FB | input | Feedback voltage input that sets the output voltage via an external resistive divider, with a typical feedback reference of 0.6V. |
| 8 | EN | input | Enable control input where logic high enables the device and connecting to GND disables it. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | TSOT-23-8 |
| Category | Power Management ICs |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage range | VIN | 2.5 | 6 | V | Drive VIN with a 2.5V to 6V power source (test point description) | 3 | |
| Feedback reference voltage | VFB | 0.6 | V | Feedback reference voltage is 0.6V typically (test point description) | 3 | ||
| Feedback reference voltage accuracy | VFB | -2 | 2 | % | Accurate Voltage Reference 0.6V ±2% (product feature list) | 2 | |
| Switching frequency | fSW | 1.5 | MHz | Steady constant switching frequency (product feature list) | 2 | ||
| Switching frequency tolerance | fSW | -200 | 200 | kHz | Steady 1.5MHz ±200kHz switching frequency (product feature list) | 2 | |
| Maximum output current | IOUT | 2 | A | Max Output Current 2A (key performance summary, evaluation board) | 2 | ||
| Quiescent current | IQ | 25 | µA | Headline '25µA IQ' in title; no test conditions printed | 1 |
CAD (KiCad official)
- Symbol:
RT5785AGJ8F - Footprint:
Package_TO_SOT_SMD:TSOT-23-8 - 3D model: TSOT-23-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (8 pp, sha256
00d695f635aa2a0d, retrieved 2026-11-05, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).