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Contents

README

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IL1117C-5.0

IKSEMICON · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4

IL1117C-5.0 from IKSEMICON, in a SOT-223-4. 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 Adjust/ground terminal: it is the ground return on fixed versions, and on the adjustable version it is the ADJ pin, where the 1.25V reference sits between VOUT and ADJ and adjust pin current is 50 to 120 µA at Io = 10mA.
2 Output power_out Regulated output, which requires a minimum 10µF tantalum (or 50µF aluminum electrolytic) capacitor from VOUT to GND for stability; this pin is also connected to the heat sink tab, so the case is electrically at the output potential.
3 Input power_in Unregulated input supply, with an absolute maximum input voltage of 15V and a 10µF tantalum input bypass recommended.
4 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer IKSEMICON
Package SOT-223-4
Category Power Management (PMIC)
Pins 4

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 4.9 5 5.1 V Io = 10mA to 1.0A, Vin = 6.5 to 12.0V 2
Line regulation 4 10 mV Io =10mA, Vin = 6.5 to 12.0V 2
Load regulation 5 15 mV Io = 10mA to 1.0A, Vin = 7.0V 2
Dropout voltage 1.2 1.3 V Io = 1A (Tj = 25°C) 2
Dropout voltage 1.2 1.55 V Io = 1A (Tj = -40°C to +125°C) 2
Current limit 1000 mA Vin - Vo = 5V (Tj = 25°C) 2
Quiescent current 5.2 10 mA Vin - Vo = 1.5V 2
Temperature drift 0.5 % Tj = -40°C to +125°C 2
RMS output noise 0.003 %Vo Bandwidth of 10Hz to 10kHz at 25°C 2
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 2
Input voltage (absolute maximum) VIN 15 V 1
Operating junction temperature range TJ -40 125 °C 1
Thermal resistance junction-to-ambient (SOT-223) ΘJA 150 °C/W 1
Thermal resistance junction-to-case (SOT-223) ΘJC 35 °C/W 1

CAD (KiCad official)

  • Symbol: IL1117C-5.0
  • Footprint: Package_TO_SOT_SMD:SOT-223
  • 3D model: SOT-223-4 (KiCad packages3D, STEP)
  • 3D model files: il1117c-5-0-etched.step / il1117c-5-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); il1117c-5-0.step / il1117c-5-0.glb are the bare package body.

Provenance

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

  • Datasheet: IKSEMICON datasheet (10 pp, sha256 8aeaef3e5071b028, retrieved 2026-10-09, 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