component
FM9919D
Public Made by Adomby adom
Shenzhen Fuman AC-DC Controllers & Regulators, SOP-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
markdownFM9919D
Shenzhen Fuman · AC-DC Controllers & Regulators · SOP-8
FM9919D from Shenzhen Fuman, in a SOP-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 | GND | power_in | Pin 1 is the internal synchronous rectifier MOS source and must be connected to pins 2 and 3. |
| 2 | GND | power_in | Pin 2 is the internal synchronous rectifier MOS source and must be connected to pins 1 and 3. |
| 3 | GND | power_in | Pin 3 is the chip ground and must be connected to pins 1 and 2. |
| 4 | VCC | power_in | Chip supply pin, with an absolute maximum of -0.3 to 7 V, a start-up voltage of 3.3 V and an undervoltage lockout of 2.9 V. |
| 5 | D | passive | Internal synchronous rectifier MOS drain, rated -0.3 to 45 V, which also supplies VCC during operation. |
| 6 | D | passive | Internal synchronous rectifier MOS drain, rated -0.3 to 45 V, which also supplies VCC during operation. |
| 7 | D | passive | Internal synchronous rectifier MOS drain, rated -0.3 to 45 V, which also supplies VCC during operation. |
| 8 | D | passive | Internal synchronous rectifier MOS drain, rated -0.3 to 45 V, which also supplies VCC during operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Fuman |
| Package | SOP-8 |
| Category | Power Management ICs |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
FM9919D - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
fm9919d-etched.step/fm9919d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fm9919d.step/fm9919d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Fuman datasheet (4 pp, sha256
ec1bba4d7bd8af96, retrieved 2026-10-28, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).