component
SSP9481
Public Made by Adomby adom
Shanghai Siproin Microelectronics 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
markdownSSP9481
Shanghai Siproin Microelectronics · DC-DC Converters · SOT23-6
SSP9481 from Shanghai Siproin Microelectronics, in a SOT23-6. 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 | BST | power_in | Bootstrap power supply for internal floating high side MOSFET driver; connect bypass capacitor between BST and SW with maximum voltage range of 6.0V relative to SW. |
| 2 | GND | power_in | Ground; connect as close as possible to the output capacitor to minimize high current switching paths. |
| 3 | FB | input | Feedback input to error amplifier for output voltage setting; foldback circuit reduces oscillation frequency to 150 kHz when FB voltage is below 250mV during short circuit for current limiting protection. |
| 4 | EN | input | Enable input; pull below 1.0V turn-off threshold to disable or above 1.35V turn-on threshold to enable; can connect 100kΩ resistor to VIN for automatic startup. |
| 5 | VIN | power_in | Input supply voltage with operating range 4.5V to 80V; powers all internal control circuits and switching tube; decoupling capacitor to ground required close to this pin to reduce switching spikes. |
| 6 | SW | output | Switch node output; connect low forward voltage Schottky diode to ground close to this pin to reduce switching spikes; voltage range -0.3V to VIN(MAX)+0.3V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Siproin Microelectronics |
| Package | SOT23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
SSP9481 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT23-6 (KiCad packages3D, STEP)
- 3D model files:
ssp9481-etched.step/ssp9481-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ssp9481.step/ssp9481.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Siproin Microelectronics datasheet (10 pp, sha256
9ec55c2653568dfd, retrieved 2026-09-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).