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LD1117AG-33-TN3-A-R

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UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-252-2(DPAK). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LD1117AG-33-TN3-A-R

UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · TO-252-2(DPAK)

LD1117AG-33-TN3-A-R from UTC(Unisonic Tech), in a TO-252-2(DPAK). 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 GND power_in Ground pin (GND/ADJ is the reference pin; on the fixed 3.3V version it is ground), pin code A assignment from the ordering table.
2 VOUT power_out Regulated 3.3V output (3.234 to 3.366V) with 1A output current for the LD1117A, per pin code A.
3 VIN power_in Input voltage pin, operating input voltage up to 15V and absolute maximum 18V, per pin code A.

Key specifications

Parameter Value
Manufacturer UTC(Unisonic Tech)
Package TO-252-2(DPAK)
Category Power Management ICs
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
Output Voltage VOUT 3.234 3.3 3.366 V VIN=5.3V, IOUT=10mA, TJ=25°C 9
Line Regulation VOUT 1 6 mV VIN=4.75 to 15V, IOUT=0mA 9
Load Regulation VOUT 1 10 mV VIN=4.75V, LD1117A: IOUT=0~1000mA 9
Temperature stability VOUT 0.5 % 9
Long Term Stability VOUT 0.3 % 1000 hrs, TJ=125°C 9
Operating Input Voltage VIN 15 V IOUT=100mA 9
Quiescent Current IQ 5 10 mA VIN≤15V 9
Current Limit ILIMIT 1000 mA VIN=8.3V, TJ=25°C, LD1117A 9
Output Noise Voltage eN 100 µV B=10Hz to 10KHz, TJ=25°C 9
Supply Voltage Rejection SVR 60 75 dB IOUT=40mA, f=120Hz, TJ=25°C, VIN=6.3V, VRIPPLE=1VPP 9
Dropout Voltage VD 1 1.1 V IOUT=100mA 9
Dropout Voltage VD 1.15 1.25 V IOUT=500mA 9
Dropout Voltage VD 1.2 1.3 V IOUT=800mA 9
Thermal Regulation 0.01 0.1 %/W TA=25°C, 30ms Pulse 9
DC Input Voltage VIN 18 V TA=25°C 5
Junction Temperature TJ 150 °C TA=25°C 5
Operating Temperature TOPR -40 125 °C Determined from design, not 100% tested 5
Storage temperature TSTG -65 150 °C TA=25°C 5
Input Voltage VIN 15 V 5
Junction to Ambient θJA 112 °C/W TO-252/TO-252D 5
Junction to Case θJC 12 °C/W TO-252/TO-252D 5

CAD (KiCad official)

  • Symbol: LD1117AG-33-TN3-A-R
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
  • 3D model files: ld1117ag-33-tn3-a-r-etched.step / ld1117ag-33-tn3-a-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld1117ag-33-tn3-a-r.step / ld1117ag-33-tn3-a-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (16 pp, sha256 869111f38a37f478, retrieved 2026-10-23, tier: manufacturer)
  • 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