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MET1117A33B3G

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MICRONE Linear Voltage Regulators (LDO), SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MET1117A33B3G

MICRONE · Linear Voltage Regulators (LDO) · SOT-223-4

MET1117A33B3G from MICRONE, 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 VSS power_in Ground pin of the fixed 3.3 V regulator.
2 VOUT power_out Regulated 3.3 V output (±2%) supplying over 700 mA, needing an output capacitor of at least 4.7 µF with ESR of 0.25 to 2.2 ohm.
3 VIN power_in Power input accepting up to 20 V (absolute maximum), with a 4.8 V to 20 V operating range for the A33 version.
4 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer MICRONE
Package SOT-223-4
Category Power Management ICs
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 VOUT 3.3 V IOUT=10mA, VIN=VOUT+1.5V (min ×0.98, max ×1.02) 6
Maximum Output Current IOUTMAX 700 mA VIN=VOUT+1.5V 6
Maximum Output Current IOUTMAX 800 mA VIN=VOUT+1.7V 6
Load Regulation ΔVOUT-LOAD 20 30 mV VIN=VOUT+1.5V, 0mA≤IOUT≤700mA 6
Dropout Voltage VDIF1 1.08 1.1 V IOUT=100mA 6
Dropout Voltage VDIF2 1.2 1.3 V IOUT=500mA 6
Dropout Voltage VDIF3 1.45 1.5 V IOUT=700mA 6
Dropout Voltage VDIF4 1.65 1.7 V IOUT=800mA 6
Quiescent Current ISS 3.5 10 mA VIN=VOUT+1.5V 6
Line Regulation ΔVOUT-LINE 2 6 mV IOUT=10mA, VOUT+1.5V≤VIN≤20V 6
Input Voltage VIN 20 V 2
Output Current IOUT 850 mA 2
Power Dissipation SOT223 PD 750 mW SOT223 2
Operating Temperature Range TOPR -40 125 °C 2
Storage Temperature Range TSTG -40 150 °C 2
Junction Temperature Range TJ 0 150 °C 2
Thermal Resistance Junction-to-Case SOT223 15 °C/W SOT223 2
Thermal Resistance Junction-to-Ambient SOT223 136 °C/W SOT223, no heat sink, no air flow 2
Operating Voltage Range VIN 4.8 20 V MET1117A33 1
Ripple Rejection Rate PSRR 65 dB VIN=12V +1Vp-pAC, IOUT=10mA, 1kHz 6
Ripple Rejection Rate PSRR 60 dB VIN=12V +1Vp-pAC, IOUT=100mA, 1kHz 6
Thermal Shutdown Junction Temperature 160 °C 6
Current Limit ILIMIT 850 mA VIN=VOUT+1.7V 6

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing ppa body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Nanjing Micro 14

CAD (KiCad official)

  • Symbol: MET1117A33B3G
  • Footprint: Package_TO_SOT_SMD:SOT-223
  • 3D model: SOT-223-4 (KiCad packages3D, STEP)
  • 3D model files: met1117a33b3g-etched.step / met1117a33b3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); met1117a33b3g.step / met1117a33b3g.glb are the bare package body.

Provenance

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

  • Datasheet: MICRONE datasheet (14 pp, sha256 9f6a198bf76c0ebb, retrieved 2026-10-23, tier: lcsc)
  • 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