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LM1117MPX-ADJNOPB

Public Made by Adom

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

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LM1117MPX-ADJNOPB

onsemi · Linear Voltage Regulators (LDO) · SOT-223

LM1117MPX-ADJNOPB from onsemi, 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 Adjust/Ground power_in Adjust/Ground pin: on the adjustable version it sets the output voltage through the external divider R1 and R2, with the 1.25 V reference held across R1, and its adjust pin current stays low and nearly constant with load current.
2 Output power_out Output pin, electrically connected to the heatsink tab; a minimum output capacitance of 4.7 µF with ESR from 33 mΩ (typ) to 2.2 Ω is required for stability.
3 Input power_in Input pin with a maximum input voltage of 20 V per the Maximum Ratings, and a 10 µF ceramic or tantalum input bypass capacitor is recommended for most applications.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-223
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
Input Voltage Vin 20 V 2
Maximum Die Junction Temperature Range TJ -55 150 °C 2
Storage Temperature Range Tstg -65 150 °C 2
Operating Ambient Temperature Range (LM1117) TA 0 125 °C LM1117 variant 2
Thermal Resistance, Junction-to-Ambient, Minimum Size Pad RJA 160 °C/W Minimum size pad 2
Thermal Resistance, Junction-to-Case RJC 15 °C/W 2
Reference Voltage, Adjustable Output Devices Vref 1.238 1.25 1.262 V Vin-Vout = 2.0 V, Iout = 10 mA, TA = 25°C 3
Reference Voltage, Adjustable Output Devices Vref 1.225 1.25 1.27 V Vin-Vout = 1.4 V to 10 V, Iout = 10 mA to 800 mA (Note 4) 3
Line Regulation Adjustable Regline 0.04 0.1 % Vin = 2.75 V to 16.25 V, Iout = 10 mA 3
Load Regulation Adjustable Regline 0.2 0.4 % Iout = 10 mA to 800 mA, Vin = 4.25 V 3
Dropout Voltage (Measured at Vout − 100 mV) Vin−Vout 0.95 1.1 V Iout = 100 mA 3
Dropout Voltage (Measured at Vout − 100 mV) Vin−Vout 1.01 1.15 V Iout = 500 mA 3
Dropout Voltage (Measured at Vout − 100 mV) Vin−Vout 1.07 1.2 V Iout = 800 mA 3
Output Current Limit Iout 1000 1500 2200 mA Vin−Vout = 5.0 V, TA = 25°C, Note 6 3
Minimum Required Load Current for Regulation, Adjustable Output Devices IL(min) 0.8 5 mA Vin = 15 V 3
Ripple Rejection Adjustable RR 67 73 dB Vin−Vout = 6.4 V, Iout = 500 mA, 10 Vpp 120 Hz Sinewave 3
Adjustment Pin Current Iadj 52 120 µA Vin = 11.25 V, Iout = 800 mA 3
Adjust Pin Current Change Iadj 0.4 5 µA Vin−Vout = 1.4 V to 10 V, Iout = 10 mA to 800 mA 3
Thermal Regulation 0.01 0.1 %/W TA = 25°C, 30 ms Pulse 3
Temperature Stability ST 0.5 % 3
Long Term Stability St 0.3 % TA = 25°C, 1000 Hrs End Point Measurement 3
RMS Output Noise N 0.003 %Vout f = 10 Hz to 10 kHz 3

CAD (KiCad official)

  • Symbol: LM1117MPX-ADJNOPB
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: lm1117mpx-adjnopb-etched.step / lm1117mpx-adjnopb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm1117mpx-adjnopb.step / lm1117mpx-adjnopb.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (13 pp, sha256 d4a212fd6b43e65e, retrieved 2026-10-28, tier: manufacturer)
  • 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