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DS8402-33A3L
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DSTECH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, 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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Contents
README
markdownDS8402-33A3L
DSTECH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
DS8402-33A3L from DSTECH, 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 | VOUT | power_out | Output of the regulator, 3.3V fixed for this variant; place the output capacitor (1µF to 22µF, minimum 1mΩ ESR) close to the VOUT and GND pins. |
| 2 | GND | power_in | Ground pin; the input and output capacitor grounds must return to this pin through as wide and short a copper trace as practical. |
| 3 | VIN | power_in | Input of supply voltage, recommended 2.5V to 36V with an absolute maximum of 40V to GND; place a 1µF or larger input capacitor close to VIN and GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DSTECH |
| Package | SOT-89-3 |
| 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 = 3.3V) | VDROP_3.3V | 0.38 | V | ILOAD =100mA, VOUT = 3.3V | 5 | ||
| Ground Current (VOUT ≤ 5V) | IQ | 2 | μA | ILOAD = 0mA, VOUT ≤ 5V | 5 | ||
| Line Regulation | ΔLINE | 0.8 | % | ILOAD =1mA, 10V ≤ VIN ≤ 20V | 5 | ||
| Load Regulation | ΔLOAD | 0.5 | % | 10mA≤ ILOAD ≤ 0.1A | 5 | ||
| Output Current Limit | ILIM | 201 | 350 | mA | VOUT =0V | 5 | |
| Power Supply Rejection Ratio | PSRR | 70 | dB | VOUT =3.3V, ILOAD =30mA, VIN = 12V, f = 1KHz | 5 | ||
| Thermal Shutdown Temperature | TSD | 160 | °C | ILOAD =10mA | 5 | ||
| Thermal Shutdown Hysteresis | ΔTSD | 30 | °C | 5 | |||
| VIN to GND | VIN | -0.3 | 40 | V | 4 | ||
| VOUT to GND | VOUT | -0.3 | 14 | V | 4 | ||
| VOUT to VIN | -40 | 0.3 | V | 4 | |||
| Lead Temperature (Soldering, 10 sec.) | 260 | °C | Soldering, 10 sec. | 4 | |||
| Junction Temperature | 150 | °C | 4 | ||||
| Storage Temperature Range | -40 | 150 | °C | 4 | |||
| ESD Susceptibility HBM | 2 | KV | HBM | 4 | |||
| ESD Susceptibility MM | 200 | V | MM | 4 | |||
| Package Thermal Resistance SOT-89-3 | θJA | 120 | °C/W | TA=25°C, DSTECH EVB board | 4 | ||
| Input Voltage | VIN | 2.5 | 36 | V | 4 | ||
| Junction Temperature Range | -40 | 125 | °C | 4 | |||
| Ambient Temperature Range | -40 | 85 | °C | 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:
DS8402-33A3L - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
ds8402-33a3l-etched.step/ds8402-33a3l-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds8402-33a3l.step/ds8402-33a3l.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).