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IL1117C-3.3

Public Made by Adom

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IKSEMICON 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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IL1117C-3.3

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

IL1117C-3.3 from IKSEMICON, 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 power_in Pin 1 is labeled ADJ/GND on the SOT-223 pinout; the adjust function applies to the adjustable version and the datasheet does not separately state its role on the fixed 3.3V part.
2 Output power_out Regulated output at 3.3V for this fixed version, requiring a minimum 10uF tantalum (or 50uF aluminum electrolytic) capacitor from VOUT to GND for stability; this pin is connected to the heat sink tab, and the case of all devices in the series is electrically connected to the output.
3 Input power_in Unregulated input supply with a maximum input voltage of 15V, and a 10uF tantalum input bypass capacitor is recommended.

Key specifications

Parameter Value
Manufacturer IKSEMICON
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
Output voltage (IL1117C-3.3), Vin = 4.8 to 12.0V 3.234 3.3 3.366 V Io = 10mA to IFULLLOAD, Vin = 4.8 to 12.0V 3
Line regulation (IL1117C-3.3) 3 10 mV Io =10mA, Vin = 4.8 to 12.0V 3
Load regulation (IL1117C-3.3) 2 12 mV Io = 10mA to 1.0A, Vin = 5.3V 3
Dropout voltage (TJ = 25°C) 1.2 1.4 V Io =1A (TJ = 25°C) 3
Dropout voltage (TJ = -40°C to +125°C) 1.2 1.55 V Io =1A (TJ = -40°C to +125°C) 3
Current limit 1000 1500 mA Vin - Vo = 5V (TJ = 25°C) 3
Quiescent current 5.2 10 mA Vin - Vo = 1.5V 3
Ripple rejection ratio 60 72 dB 120Hz input Ripple(CADJ for ADJ) = 25uF; Vin -Vo = 5V, Io = 1.0A; TJ = -40°C to +125°C 3
Input voltage (VIN) VIN 15 V 2
Operating junction temperature range TJ -40 125 °C Listed in Absolute Maximum Ratings table; functionality guaranteed to 125°C max 2
Storage temperature range TS -50 150 °C 2
ESD HBM protection level ESD -2000 2000 V Human body model, 1.5kΩ in series with 100pF (Note 2) 2
Thermal resistance junction-to-ambient (SOT-223) ΘJA 170 °C/W SOT-223 2
Thermal resistance junction-to-case (SOT-223) ΘJC 40 °C/W SOT-223 2
Temperature drift 0.5 % TJ = -40°C to +125°C 3
RMS output noise 0.003 %Vo Bandwidth of 10Hz to 10kHz at 25°C 3
Thermal resistance junction-to-ambient SOT-223, 1oz copper ΘJ-A 105 °C/W 1oz copper area 100mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 1oz copper ΘJ-A 72 °C/W 1oz copper area 200mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 1oz copper ΘJ-A 66 °C/W 1oz copper area 300mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 1oz copper ΘJ-A 63 °C/W 1oz copper area 500mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 2oz copper ΘJ-A 95 °C/W 2oz copper area 100mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 2oz copper ΘJ-A 66 °C/W 2oz copper area 200mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 2oz copper ΘJ-A 56 °C/W 2oz copper area 300mm2, TA = 25°C still air 9
Thermal resistance junction-to-ambient SOT-223, 2oz copper ΘJ-A 50 °C/W 2oz copper area 500mm2, TA = 25°C still air 9

CAD (KiCad official)

  • Symbol: IL1117C-3.3
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: il1117c-3-3-etched.step / il1117c-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); il1117c-3-3.step / il1117c-3-3.glb are the bare package body.

Provenance

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

  • Datasheet: IKSEMICON datasheet (13 pp, sha256 c1cbde9b41d88821, 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