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NCP718ASN250T1G

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onsemi Linear Voltage Regulators (LDO), TSOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NCP718ASN250T1G

onsemi · Linear Voltage Regulators (LDO) · TSOT-23-5

NCP718ASN250T1G from onsemi, in a TSOT-23-5. 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 Input pin; a small capacitor (at least 1 µF ceramic) is needed from this pin to ground to assure stability, operating input range 2.5 V to 24 V.
2 GND power_in Power supply ground.
3 EN input Enable pin; driving it high (above 1.2 V) turns on the regulator and driving it low (below 0.4 V) puts the regulator into shutdown mode.
4 NC/ADJ unconnected On fixed versions such as the 2.5 V NCP718ASN250T1G this pin is a no connection that can be tied to ground to improve thermal dissipation or left disconnected (feedback pin on the adjustable version only).
5 OUT power_out Regulated output voltage pin; a small 1 µF ceramic capacitor is needed from this pin to ground to assure stability.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSOT-23-5
Category Power Management ICs
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Input Voltage VIN 2.5 24 V 3
Output Voltage Accuracy (fixed versions) VOUT -2 2 % -40°C ≤ TJ ≤ 125°C, VOUT + 1 V < VIN < 16 V, 0.1 mA < IOUT < 300 mA, VOUT ≥ 1.8 V 3
Line Regulation RegLINE 10 mV VOUT + 1 V ≤ VIN ≤ 16 V, Iout = 1 mA 3
Load Regulation RegLOAD 10 mV IOUT = 0.1 mA to 300 mA 3
Dropout Voltage (TSOT-23-5, 2.5 V - 2.7 V) VDO 320 490 mV VDO = VIN, (VOUT(NOM), 3%), IOUT = 300 mA 3
Maximum Output Current ILIM 300 800 mA VIN = VOUT + 1 V 3
Disable Current IDIS 0.1 1 µA VEN = 0 V, VIN = 5 V 3
Quiescent Current IQ 4 8 µA IOUT = 0 mA, -40°C ≤ TJ ≤ 125°C 3
Enable Input Threshold Voltage, rising VEN_HI 1.2 V Voltage increasing 3
Enable Input Threshold Voltage, falling VEN_LO 0.4 V Voltage decreasing 3
Ground current IGND 50 µA IOUT = 10 mA 3
Ground current IGND 300 µA IOUT = 300 mA 3
Power Supply Rejection Ratio PSRR 60 dB VIN = 3.5 V + 100 mVpp, VOUT = 2.5 V, IOUT = 1 mA, Cout = 1 µF, f = 1 kHz 3
Output Noise Voltage VN 36 µVrms VOUT = 1.2 V, IOUT = 10 mA, f = 100 Hz to 100 kHz 3
EN Pin Current IEN 100 nA VEN = 5.5 V 3
Active Output Discharge Resistance Rdis 100 Ω VIN = 5.5 V, VEN = 0 V 3
Thermal Shutdown Temperature TSD 165 °C Temperature increasing from TJ = +25°C 3
Thermal Shutdown Hysteresis TSDH 25 °C Temperature falling from TSD 3
Input Voltage VIN -0.3 24 V 2
Enable Voltage VEN -0.3 V max VIN+0.3 V 2
Output Voltage VOUT -0.3 6 V -0.3 to VIN+0.3 (max. 6) 2
Maximum Junction Temperature TJ(MAX) 150 °C 2
Storage Temperature TSTG -55 150 °C 2
ESD Capability, Human Body Model ESDHBM 2000 V 2
ESD Capability, Charged Device Model ESDCDM 1000 V 2
Thermal Resistance, Junction-to-Air (TSOT-23-5) RθJA 235 °C/W 2

CAD (KiCad official)

  • Symbol: NCP718ASN250T1G
  • Footprint: Package_TO_SOT_SMD:TSOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ncp718asn250t1g-etched.step / ncp718asn250t1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncp718asn250t1g.step / ncp718asn250t1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (10 pp, sha256 4ce0273886958662, 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