component
DS8402-50S3
Public Made by Adomby adom
DSTECH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. 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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Contents
README
markdownDS8402-50S3
DSTECH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3
DS8402-50S3 from DSTECH, in a SOT-23-3. 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 | GND | power_in | Ground reference pin for the regulator; the input and output capacitor ground connections must return to this pin using as wide and short a copper trace as practical. |
| 2 | VOUT | power_out | Regulated 5.0V output of the LDO, which must be stable with an output capacitor of 1µF to 22µF with at least 1mΩ ESR placed close to the VOUT and GND pins. |
| 3 | VIN | power_in | Supply input of the regulator, rated 2.5V to 36V in recommended operating conditions (absolute maximum VIN to GND is -0.3V to 40V), with a 1µF or larger input capacitor placed close to the VIN and GND pins. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DSTECH |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VIN | 2.5 | 36 | V | 5 | ||
| DC Output Voltage Accuracy | -1 | 1 | % | ILOAD =0.1mA | 5 | ||
| Dropout Voltage (VOUT ≥ 5V) | VDROP | 0.35 | V | ILOAD =100mA, VOUT ≥ 5V | 5 | ||
| Line Regulation | ΔLINE | 0.8 | % | ILOAD =1mA, 10V ≤ VIN ≤ 20V | 5 | ||
| Output Current Limit | ILIM | 201 | 350 | mA | VOUT =0V | 5 | |
| Load Regulation | ΔLOAD | 0.5 | % | 10mA≤ ILOAD ≤ 0.1A | 5 | ||
| Ground Current | IQ | 2 | μA | ILOAD = 0mA, VOUT ≤ 5V | 5 | ||
| Thermal Shutdown Hysteresis | ΔTSD | 30 | °C | 5 | |||
| Thermal Shutdown Temperature | TSD | 160 | °C | ILOAD =10mA | 5 | ||
| VIN to GND | VIN to GND | -0.3 | 40 | V | 4 | ||
| VOUT to GND | VOUT to GND | -0.3 | 14 | V | 4 | ||
| VOUT to VIN | VOUT to VIN | -40 | 0.3 | V | 4 | ||
| Junction Temperature | 150 | °C | 4 | ||||
| Lead Temperature (Soldering) | 260 | °C | Soldering, 10 sec. | 4 | |||
| Storage Temperature Range | -40 | 150 | °C | 4 | |||
| ESD Susceptibility HBM | 2 | KV | HBM | 4 | |||
| ESD Susceptibility MM | 200 | V | MM | 4 | |||
| Input Voltage | VIN | 2.5 | 36 | V | 4 | ||
| Junction Temperature Range | -40 | 125 | °C | 4 | |||
| Ambient Temperature Range | -40 | 85 | °C | 4 | |||
| Package Thermal Resistance, SOT-23-3 | θJA | 220 | °C/W | TA=25°C, DSTECH EVB board (Note 2) | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | must be back to the DS8402 ground pin using as wide and as short of a copper trace as is practical. | 9 |
CAD (KiCad official)
- Symbol:
DS8402-50S3 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
ds8402-50s3-etched.step/ds8402-50s3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds8402-50s3.step/ds8402-50s3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DSTECH datasheet (13 pp, sha256
920d1bd86b5963da, retrieved 2026-10-18, 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).