component
FR9811S6
Public Made by Adomby adom
Fitipower Integrated Tech DC-DC Converters, SOT23-6. 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
markdownFR9811S6
Fitipower Integrated Tech · DC-DC Converters · SOT23-6
FR9811S6 from Fitipower Integrated Tech, in a SOT23-6. 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 | BST | passive | High-side gate drive boost pin; a capacitor rated between 0.1uF and 1uF must be connected from this pin to LX to fully turn on the internal high-side NMOS. |
| 2 | GND | power_in | Ground pin. |
| 3 | FB | input | Voltage feedback input; connect FB and VOUT through a resistive divider, and the IC regulates FB at 0.6V (VFB 0.591V to 0.609V, 4.5V to 21V VIN). |
| 4 | SHDN | input | Enable input: pull high to turn the IC on and low to turn it off (EN low threshold 0.5V, high threshold 1.5V); connect to VIN through a 100kΩ resistor for self-startup. |
| 5 | VIN | power_in | Power supply input, specified at 4.5V to 21V (absolute maximum -0.3V to +22V); place input capacitors as close as possible between VIN and GND. |
| 6 | LX | output | Power switching node; connect the external inductor to this pin (absolute maximum -0.3V to VIN +0.3V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Fitipower Integrated Tech |
| Package | SOT23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
FR9811S6 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT23-6 (KiCad packages3D, STEP)
- 3D model files:
fr9811s6-etched.step/fr9811s6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fr9811s6.step/fr9811s6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Fitipower Integrated Tech datasheet (9 pp, sha256
a18864a82003c220, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).