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ASPL1117-ADJ-DT-R

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ASDsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ASPL1117-ADJ-DT-R

ASDsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

ASPL1117-ADJ-DT-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/GND input Adjust pin of the ASPL1117-ADJ; the output voltage is set by the external divider from Vout (Vout = 1.25×(1+R2/R1)+IAdj×R2) with IAdj of 55 to 120 µA, and the datasheet labels this pin ADJ/GND.
2 Vout power_out Regulated output of the 0.9A low-dropout regulator, rated for a maximum output current of 0.9A with a typical dropout of 1.3V at 0.9A load.
3 Vin power_in Regulator input with a maximum input voltage of 20V per the absolute maximum ratings, and a minimum of about 2.75V required for the ADJ version's line-regulation test range.

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
Reference voltage Vref 1.225 1.25 1.275 V 10mA≤Iout≤0.9A,Vin=3.25V 3
Line regulation ΔVout 0.03 0.2 %/V Iout=10mA, 2.75V≤Vin≤12V 3
Load regulation ΔVout 2 8 mV Vin =2.75V, 10mA≤Iout≤0.9A 3
Dropout voltage Vdrop 1.23 1.3 V Iout =100mA 4
Dropout voltage Vdrop 1.3 1.5 V Iout=0.9 4
Current limit Ilimit 0.8 0.9 A Vin-Vout=2V;Tj =25℃ 4
Minimum load current (ADJ) Imin 2 10 mA 4
Adjust pin current (ADJ) IAdj 55 120 uA 4
Iadj change (ADJ) Ichange 0.2 10 uA 4
Temperature coefficient ΔV/ΔT -100 100 ppm 4
Thermal resistance junction-to-case θJC 20 ℃/W SOT-223 4
Max input voltage 20 V 2
Max power dissipation Pd 1 W 2
Max output current 0.9 A 2
Recommended operating junction temperature Tj -20 125 ℃ 2
Max operating junction temperature Tj 150 ℃ 2
Ambient temperature Ta -20 85 ℃ 2
Storage temperature Ts -40 150 ℃ 2
Lead temperature 260 ℃ 10S 2

CAD (KiCad official)

  • Symbol: ASPL1117-ADJ-DT-R
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: aspl1117-adj-dt-r-etched.step / aspl1117-adj-dt-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); aspl1117-adj-dt-r.step / aspl1117-adj-dt-r.glb are the bare package body.

Provenance

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

  • Datasheet: ASDsemi datasheet (11 pp, sha256 d2dac7de9ca107f2, 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