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LR1117DD33X

Public Made by Adom

by adom

LRC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LR1117DD33X

LRC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252

LR1117DD33X from LRC, in a TO-252. 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 reference pin for the fixed-output LR1117D-3.3V regulator (pin 1 is Gnd in the fixed version, Adj in the adjustable version).
2 Vout power_out Regulated 3.3V output, specified at 3.234V to 3.366V for 0 ≤ Iout ≤ 1A with Vin = 5.3V at Tj = 25°C, with a maximum output current of 1.4A.
3 Vin power_in Unregulated input supply, with a recommended input voltage range of max 15V and a maximum input voltage of 18V, and a dropout of 1.3V typical at 1A load.

Key specifications

Parameter Value
Manufacturer LRC
Package TO-252
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
Output Voltage (LR1117D-3.3V) Vout 3.234 3.3 3.366 V 0≤Iout≤1A, Vin=5.3V, Tj=25°C 3
Load Regulation (LR1117D-3.3V) ΔVout 9 36 mV Vin=4.8V, 10mA≤Iout≤1A 3
Dropout Voltage Vdrop 1.15 1.3 V Iout=100mA 4
Dropout Voltage Vdrop 1.3 1.5 V Iout=1A 4
Quiescent Current (LR1117D-3.3V) Iq 2 5 mA Vin=12V 4
Supply Voltage Rejection SVR 60 dB f=120Hz, VIN-VOUT=3V + 1VPP ripple 4
Temperature Coefficient ΔV/ΔT -100 100 ppm 4
Thermal Resistance Junction-to-Case (TO-252) TJC 10 °C/W TO-252 4
Thermal Resistance Junction-to-Ambient (TO-252, no heat sink) TJA 92 °C/W TO-252, no heat sink 4
Max Input Voltage VIN 18 V 2
Max Operating Junction Temperature Tj 150 °C 2
Ambient Operating Temperature Ta -40 85 °C 2
Storage Temperature Ts -40 150 °C 2
Lead Temperature 260 °C 10 s 2
Operating Junction Temperature Tj -20 125 °C 2

CAD (KiCad official)

  • Symbol: LR1117DD33X
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: lr1117dd33x-etched.step / lr1117dd33x-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr1117dd33x.step / lr1117dd33x.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (9 pp, sha256 67c0164382c5206c, 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