component
SD2350D50B
Public Made by Adomby adom
SHOUDING DC-DC Converters, SOT-89-3. 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
markdownSD2350D50B
SHOUDING · DC-DC Converters · SOT-89-3
SD2350D50B from SHOUDING, in a SOT-89-3. 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 | Vss | power_in | Ground pin; must be well grounded, otherwise the internal zero potential shifts with switching current and operation becomes unstable. |
| 2 | OUT | power_out | Boosted output pin; connect the output capacitor (at least 47µF, rated at least 3x the output voltage) with the shortest possible trace. |
| 3 | Lx | output | Switch pin (Ext drives an external transistor in external-MOS versions) connected to the inductor and Schottky diode; internal switch on-current is 450 mA at VLX=0.4V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SHOUDING |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | Vout | 4.875 | 5 | 5.125 | V | VIN=2.2V, Iload=10mA, TA=25C | 4 |
| Start-up voltage | Vstart | 0.5 | 0.8 | 0.9 | V | IL=1mA, VIN: 0→0.98V | 4 |
| Hold voltage | Vhold | 0.5 | 0.6 | V | IL=1mA, VIN: 0.98→0V | 4 | |
| No-load input current | IIN1 | 8 | 15 | 25 | µA | VIN=2.2V, no load | 4 |
| Quiescent input current | IIN2 | 2 | 4 | 8 | µA | 4 | |
| Switch on-current | ILX | 570 | mA | VLX=0.4V | 4 | ||
| Switch leakage current | ILxleak | 1 | µA | VLX=6V | 4 | ||
| Oscillation frequency | FOSC | 150 | 200 | 250 | kHz | 4 | |
| Duty cycle | Dty | 80 | % | 4 | |||
| Efficiency | η | 85 | % | 4 | |||
| Input voltage to GND | VIN | 10 | V | 2 | |||
| Output current | Iout | 800 | mA | 2 | |||
| Power dissipation SOT-89 | Pd | 0.5 | W | SOT-89 | 2 | ||
| Operating temperature | TA | -40 | 145 | °C | 2 | ||
| Lead soldering temperature | 260 | °C | 10 s | 2 |
CAD (KiCad official)
- Symbol:
SD2350D50B - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
sd2350d50b-etched.step/sd2350d50b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sd2350d50b.step/sd2350d50b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SHOUDING datasheet (9 pp, sha256
c6342c897e519d3e, retrieved 2026-10-23, 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-sonnet-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).