component
DS8401-33S5
Public Made by Adomby adom
DSTECH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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
markdownDS8401-33S5
DSTECH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
DS8401-33S5 from DSTECH, in a SOT-23-5. 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 | VIN | power_in | Input of supply voltage; the recommended input range is 2.5V to 36V (absolute maximum -0.3V to 40V), and a 1µF or larger input capacitor should be placed close to the VIN and GND pins. |
| 2 | GND | power_in | Ground reference for the regulator; output and input capacitor ground connections should return to this pin through as short and wide a copper trace as is practical. |
| 3 | EN | input | Enable control input: the regulator is on when EN is above the 1.1V rising threshold and in shutdown when pulled below the 0.4V falling threshold (shutdown current typically 100nA). |
| 4 | NC | unconnected | No internal connection; this pin is not connected inside the device on the non-SNS (DS8401-AABB) variant. |
| 5 | VOUT | power_out | Output of the regulator, which supplies up to 200mA and should have a ceramic or tantalum output capacitor with at least 1mΩ ESR and effective capacitance between 1µF and 22µF, placed close to VOUT and GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DSTECH |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
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 | 6 | ||
| DC Output Voltage Accuracy | -1 | 1 | % | ILOAD =0.1mA | 6 | ||
| Dropout Voltage (VOUT = 3.3V) | VDROP_3.3V | 0.38 | V | ILOAD =100mA, VOUT = 3.3V | 6 | ||
| Shutdown Ground Current | ISD | 0.1 | 0.5 | μA | VEN = 0V, VOUT = 0V | 6 | |
| EN Input Current | IEN | 10 | 100 | nA | VEN = 24V | 6 | |
| Line Regulation | ΔLINE | 0.8 | % | ILOAD =1mA, 10V ≤ VIN ≤ 20V | 6 | ||
| Load Regulation | ΔLOAD | 0.5 | % | 10mA≤ ILOAD ≤ 0.1A | 6 | ||
| Output Current Limit | ILIM | 201 | 350 | mA | VOUT =0 | 6 | |
| Enable Threshold Voltage (rising) | VIH | 1.1 | V | EN Rising | 6 | ||
| Enable Threshold Voltage (falling) | VIL | 0.4 | V | EN Falling | 6 | ||
| Ground Current | IQ | 2 | μA | ILOAD = 0mA, VOUT ≤ 5V | 6 | ||
| Power Supply Rejection Ratio | PSRR | 70 | dB | VOUT =3.3V, ILOAD =30mA, VIN = 12V, f = 1KHz | 6 | ||
| Thermal Shutdown Temperature | TSD | 160 | °C | ILOAD =10mA | 6 | ||
| Thermal Shutdown Hysteresis | ΔTSD | 30 | °C | 6 | |||
| VIN, EN to GND | -0.3 | 40 | V | 5 | |||
| VOUT to GND | -0.3 | 14 | V | 5 | |||
| VOUT to VIN | -40 | 0.3 | V | 5 | |||
| Lead Temperature (Soldering) | 260 | °C | 10 sec. | 5 | |||
| Junction Temperature | 150 | °C | 5 | ||||
| Storage Temperature Range | -40 | 150 | °C | 5 | |||
| ESD Susceptibility HBM | 2 | kV | HBM | 5 | |||
| ESD Susceptibility MM | 200 | V | MM | 5 | |||
| Input Voltage | VIN | 2.5 | 36 | V | 5 | ||
| Junction Temperature Range | -40 | 125 | °C | 5 | |||
| Ambient Temperature Range | -40 | 85 | °C | 5 | |||
| Package Thermal Resistance SOT-23-5 | θJA | 220 | °C/W | Note 2 | 5 |
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 DS8401 ground pin using as wide and as short of a copper trace as is practical. | 10 |
CAD (KiCad official)
- Symbol:
DS8401-33S5 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ds8401-33s5-etched.step/ds8401-33s5-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds8401-33s5.step/ds8401-33s5.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DSTECH datasheet (12 pp, sha256
e8b24822ab19bcca, retrieved 2026-10-17, 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).