component
SD4950TR
Public Made by Adomby adom
Hangzhou Silan Microelectronics DC-DC Converters, 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
markdownSD4950TR
Hangzhou Silan Microelectronics · DC-DC Converters · SOP-8
SD4950TR from Hangzhou Silan Microelectronics, 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 | SW | output | Drain of the internal 150 V power MOSFET for the DC/DC flyback stage, rated -0.3 to 150 V referenced to CS. |
| 2 | VDD | power_in | PoE positive power input for the PD controller, rated -0.3 to 100 V referenced to VSS, with internal UVLO turning on above 38 V and off below 31 V. |
| 3 | VSS | power_in | PoE negative power input and the reference node for the PD controller electrical parameters. |
| 4 | GND | power_in | Ground for the DC/DC controller, with the GND input current internally limited to 960 mA. |
| 5 | VCC | power_in | Supply for the DC/DC controller, with an operating range of 9.5 to 20 V, start-up at 16.2 V, UVLO off at 8.4 V, absolute maximum of 26 V, and VCC overvoltage protection at 22.5 V. |
| 6 | COMP | output | DC/DC loop compensation pin, with a high clamp of 2.3 to 2.5 V (2.4 V typical) and an absolute maximum rating of -0.3 to 7 V. |
| 7 | FB | input | DC/DC feedback input sampled at half the demagnetization time and regulated to a 3 V reference, with output overvoltage at 3.5 V, short-circuit detection at 1.45 V, and an absolute maximum rating of -0.3 to 7 V. |
| 8 | CS | input | DC/DC peak-current sense input, with CS maximum of 0.8 V typical, abnormal-current protection at 1 V, and an absolute maximum rating of -0.3 to 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Hangzhou Silan Microelectronics |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
SD4950TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
sd4950tr-etched.step/sd4950tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sd4950tr.step/sd4950tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Hangzhou Silan Microelectronics datasheet (13 pp, sha256
c941bc2793c9cecd, retrieved 2026-10-09, 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).