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NCV1117ST25T3G

Public Made by Adom

by adom

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

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NCV1117ST25T3G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

NCV1117ST25T3G from onsemi, 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 Adjust/Ground power_in Adjust/ground pin: it is ground for the fixed-output NCV1117ST25T3G (2.5 V), and on adjustable versions it sets the output through the 1.25 V reference, with adjust pin current typically 52 µA and at most 120 µA.
2 Output power_out Regulated output pin, also electrically connected to the heatsink tab; output current must not exceed 1.0 A when Vin is greater than 12 V.
3 Input power_in Unregulated input pin, rated for up to 20 V input (maximum input voltage Vin = 20 V).

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-223-3
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, Fixed 2.5 V (Vin = 4.5 V, Iout = 10 mA, TA = 25 °C) Vout 2.475 2.5 2.525 V Vin = 4.5 V, Iout = 10 mA, TA = 25 °C 3
Output Voltage, Fixed 2.5 V over line and load (Vin = 3.9 V to 10 V, Iout = 0 mA to 800 mA) Vout 2.45 2.55 V Vin = 3.9 V to 10 V, Iout = 0 mA to 800 mA (Note 4) 3
Line Regulation, 2.5 V Regline 0.5 2.5 mV Vin = 3.9 V to 10 V, Iout = 0 mA 3
Load Regulation, 2.5 V Regline 3.3 7.5 mV Iout = 0 mA to 800 mA, Vin = 3.9 V 3
Dropout Voltage (Vout - 100 mV), Iout = 100 mA Vin-Vout 0.95 1.1 V Iout = 100 mA 3
Dropout Voltage (Vout - 100 mV), Iout = 500 mA Vin-Vout 1.01 1.15 V Iout = 500 mA 3
Dropout Voltage (Vout - 100 mV), Iout = 800 mA 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
Quiescent Current, 2.5 V IQ 5.2 10 mA Vin = 10 V 4
Ripple Rejection, 2.5 V RR 62 68 dB Vin-Vout = 6.4 V, Iout = 500 mA, 10 Vpp 120 Hz Sinewave 4
Thermal Regulation 0.01 0.1 %/W TA = 25°C, 30 ms Pulse 4
Maximum 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 (NCV1117) TA -40 125 °C NCV1117 2
Thermal Resistance, Junction-to-Ambient, Minimum Size Pad (SOT-223) RJA 160 °C/W Minimum size pad, Case 318H (SOT-223) 2
Thermal Resistance, Junction-to-Case (SOT-223) RJC 15 °C/W Junction-to-case, Case 318H (SOT-223) 2
Temperature Stability ST 0.5 % 4
Long Term Stability St 0.3 % TA = 25°C, 1000 Hrs End Point Measurement 4
RMS Output Noise N 0.003 %Vout f = 10 Hz to 10 kHz 4

CAD (KiCad official)

  • Symbol: NCV1117ST25T3G
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)
  • 3D model files: ncv1117st25t3g-etched.step / ncv1117st25t3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncv1117st25t3g.step / ncv1117st25t3g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (19 pp, sha256 5772faecb9389609, retrieved 2026-10-20, 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