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MIC5239-3.3YS

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

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MIC5239-3.3YS

Microchip Tech · Linear Voltage Regulators (LDO) · SOT-223-3

MIC5239-3.3YS from Microchip Tech, in a SOT-223-3. 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 IN power_in Power supply input, operating range +2.3V to +30V (absolute maximum -20V to +32V).
2 GND power_in Ground pin, internally connected in common with the leadframe (heatsink tab) for thermal conduction.
3 OUT power_out Regulated output (3.3V fixed for this variant), stable with a ceramic or tantalum output capacitor of 3.3 µF minimum, continuous 500 mA.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-223-3
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 Accuracy VOUT -1 1 % Variation from nominal VOUT, VIN = VOUT+1V, IOUT = 100 µA, TJ = +25°C 3
Output Voltage Accuracy (over temperature) VOUT -2 2 % Variation from nominal VOUT, -40°C ≤ TJ ≤ +125°C 3
Line Regulation ΔVOUT/VOUT 0.06 0.5 % VIN = VOUT + 1V to 30V 3
Load Regulation ΔVOUT/VOUT 15 30 mV IOUT = 100 µA to 500 mA, Note 2 3
Dropout Voltage ΔV 260 350 mV IOUT = 150 mA (as flattened; 400 max over temperature) 3
Dropout Voltage (over temperature) ΔV 400 mV IOUT = 150 mA, -40°C ≤ TJ ≤ +125°C 3
Ground Pin Current IGND 23 40 µA VEN ≥ 2.0V, IOUT = 100 µA 3
Ground Pin Current (over temperature) IGND 45 µA VEN ≥ 2.0V, IOUT = 100 µA, -40°C ≤ TJ ≤ +125°C 3
Ground Pin Current IGND 1.3 5 mA VEN ≥ 2.0V, IOUT = 150 mA 3
Ground Pin Current IGND 8.5 15 mA VEN ≥ 2.0V, IOUT = 500 mA 3
Ground Pin Shutdown Current IGND(SHDN) 0.1 1 µA VEN ≤ 0.6V, VIN = 30V 3
Short-Circuit Current ISC 850 1200 mA VOUT = 0V 3
Enable Input Low Voltage VIL 0.6 V Regulator off 4
Enable Input High Voltage VIH 2 V Regulator on 4
Enable Input Current IIN -1 1 µA VEN = 0.6V, regulator off 4
Enable Input Current (over temperature) IIN -2 0.01 2 µA VEN = 0.6V, regulator off 4
Enable Input Current IIN 0.15 1 µA VEN = 2.0V, regulator on 4
Enable Input Current (over temperature) IIN 2 µA VEN = 2.0V, regulator on 4
Enable Input Current IIN 0.5 2.5 µA VEN = 30V, regulator on 4
Enable Input Current (over temperature) IIN 5 µA VEN = 30V, regulator on 4
Supply Voltage (absolute maximum) VIN -20 32 V 3
Enable Input Voltage (absolute maximum) VEN -0.3 32 V 3
ESD Rating (SOT-223) 2 kV Human body model: 1.5 kΩ in series with 100 pF 3
Supply Voltage (operating) VIN 2.3 30 V 3
Enable Input Voltage (operating) VEN 0 30 V 3
Junction Temperature Range TJ -40 125 °C 4
Storage Temperature Range TS -65 150 °C 4
Lead Temperature 260 °C Soldering, 5 sec. 4
Thermal Resistance, SOT-223 3-Ld θJA 50 °C/W 4
Output Noise en 160 µVRMS 10 Hz to 100 kHz, VOUT = 3.0V, CL = 3.3 µF 3
Dropout Voltage ΔV 50 mV IOUT = 100 µA 3
Dropout Voltage ΔV 350 mV IOUT = 500 mA 3
FLAG Output Low Threshold VFLG 94 % % of VOUT 4
FLAG Output High Threshold VFLG 95 % % of VOUT 4
FLAG Output Low Voltage VOL 150 mV VIN = VOUT(NOM), 0.12VOUT, IOL = 200 µA 4
FLAG Output Leakage Current ILEAK 0.1 µA VOH = 30V 4

CAD (KiCad official)

  • Symbol: MIC5239-3.3YS
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)
  • 3D model files: mic5239-3-3ys-etched.step / mic5239-3-3ys-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mic5239-3-3ys.step / mic5239-3-3ys.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (22 pp, sha256 0a031538de2d8984, retrieved 2026-10-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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