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DS8402-33A3L

Public Made by Adom

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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.

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DS8402-33A3L

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ds8402-33a3l.step / ds8402-33a3l.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF