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ASPL317LDT-R

Public Made by Adom

by adom

ASDsemi DC-DC Converters, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ASPL317LDT-R

ASDsemi · DC-DC Converters · SOT-223

ASPL317LDT-R from ASDsemi, in a SOT-223. 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 ADJ passive Adjust pin that sets the output voltage between 1.3V and 35V; adjust pin current is typically 50µA (max 100µA).
2 OUT power_out Regulated output, supplying more than 1A with output voltage adjustable from 1.3V to 35V, with internal short-circuit and over-temperature protection.
3 INPUT power_in Unregulated input; the input-to-output voltage difference must not exceed 37V (absolute maximum).

Key specifications

Parameter Value
Manufacturer ASDsemi
Package SOT-223
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
Storage temperature TS -40 150 °C 2
Input - Output voltage difference Vin-Vout 37 V 2
Maximum junction temperature TJ 150 °C 2
Lead temperature TLEAD 260 °C soldering, 10sec 2
ESD (human body model) ESD 4000 V human body model 2
Reference voltage VREF 1.2 1.25 1.3 V 10mA≤ IOUT ≤1A; 3V≤ (VIN-VOUT) ≤37V; PD≦ 20W 3
Line regulation S V 0.01 0.04 %/V 3V≦ VIN-VOUT≦ 37V 3
Load regulation Si 0.2 0.4 % 0mA≦ IOUT≦ 1A 3
Adjust pin current Iadj 50 100 µA 3
Adjust pin current change ΔIadj 0.2 5 µA 3V≦ VIN-VOUT≦ 37V, 10mA≦ IOUT≦ 1A, PD≦ 20W 3
Minimum load current ILmin 3.5 10 mA VIN-VOUT=37V 3
Ripple rejection RR 60 75 dB f=120Hz, COUT=1µF tantalum, (VIN-VOUT)=3V, IOUT=1A 3
Temperature stability 0.7 % TMIN≦ TJ ≦ TMAX 3
RMS output noise (% of VOUT) en 0.003 % Ta=25℃, 10Hz≤ f ≤10kHz 3
Thermal resistance, junction to case (SOT-223) θJC 23 ℃/W 3
Thermal resistance, junction to ambient (SOT-223) θJA 165 ℃/W 3
Thermal shutdown hysteresis Thys 25 ℃ 3

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
housing Abs ESD (human body model) ESD 4000 V *: Absolute maximum ratings are stress ratings only and functional device operation is 2

CAD (KiCad official)

  • Symbol: ASPL317LDT-R
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: aspl317ldt-r-etched.step / aspl317ldt-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); aspl317ldt-r.step / aspl317ldt-r.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: ASDsemi datasheet (9 pp, sha256 e4699fe49507fa06, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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