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Low-dropout regulator with a current output of 150 mA and minimal power consumption

ISO14001 ISO9001 DUNS

Brands: Onsemi

Mfr.Part #: NCP551SN18T1G

Datasheet: NCP551SN18T1G Datasheet (PDF)

Package/Case: TSOP-5

Product Type: Voltage Regulators , Linear, Low Drop Out Regulators

RoHS Status:

Stock Condition: 3,284 pcs, New Original

Warranty: 1 Year Ovaga Warranty - Find Out More

Quick Quote

Please submit RFQ for NCP551SN18T1G or email to us: Email: [email protected], we will contact you within 12 hours.

NCP551SN18T1G General Description

Housed in a micro miniature TSOP-5 surface mount package, the NCP551SN18T1G is a compact and efficient solution for voltage regulation needs. Available in standard voltage versions ranging from 1.4V to 5.0V, with additional options in 100 mV increments, this regulator offers versatility for a wide range of applications



  • Industry Standard Package Option
  • Accurate Current Sense Functionality
  • Low Dropout Voltage Regulation
  • High Temperature Tolerance


  • Regulator for devices
  • Powering sensitive components
  • Suitable for various applications


Parameter Value Parameter Value
Status Active Compliance PbAHP
Package Type TSOP-5 / SOT-23-5 Case Outline 483
MSL Type 1 MSL Temp (°C) 260
Container Type REEL Container Qty. 3000
ON Target N Output Single
Polarity Positive VO (V) 1.8
IO Typ (A) 0.15 VI Min (V) 1.7
VI Max (V) 12 VDO Typ (V) 0.13
Iq Typ (mA) 0.004 Enable Yes
PowerGood No


Shipping Type Ship Fee Lead Time
DHL DHL $20.00-$40.00 (0.50 KG) 2-5 days
Fedex Fedex $20.00-$40.00 (0.50 KG) 2-5 days
UPS UPS $20.00-$40.00 (0.50 KG) 2-5 days
TNT TNT $20.00-$40.00 (0.50 KG) 2-5 days
EMS EMS $20.00-$40.00 (0.50 KG) 2-5 days
REGISTERED AIR MAIL REGISTERED AIR MAIL $20.00-$40.00 (0.50 KG) 2-5 days

Processing Time:Shipping fee depend on different zone and country.


Terms of payment Hand Fee
Wire Transfer Wire Transfer charge US$30.00 banking fee.
Paypal Paypal charge 4.5% service fee.
Credit Card Credit Card charge 3.5% service fee.
Western Union Western Union charge US.00 banking fee.
Money Gram Money Gram charge US$0.00 banking fee.


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


  • Product

    Step1 :Product

  • Vacuum packaging

    Step2 :Vacuum packaging

  • Anti-static bag

    Step3 :Anti-static bag

  • Individual packaging

    Step4 :Individual packaging

  • Packaging boxes

    Step5 :Packaging boxes

  • bar-code shipping tag

    Step6 :bar-code shipping tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

  • ESD
  • ESD

Part points

  • The NCP551SN18T1G chip is a low dropout voltage regulator designed and manufactured by ON Semiconductor. It provides stable output voltage with a low dropout voltage, making it suitable for use in various electronic devices. The chip features small footprint and low quiescent current, making it ideal for portable applications where power efficiency and space constraints are crucial.
  • Equivalent

    The equivalent products of the NCP551SN18T1G chip include the NCP551SNT1G, NCP551SN27T1G, NCP551SN30T1G, and NCP551ST1G chips.
  • Features

    The NCP551SN18T1G is a dual low capacitance diode designed to protect high-speed data lines from electrostatic discharge (ESD). It has a low leakage current, fast response time, and a small package size, making it suitable for protecting sensitive electronic components and data transmission lines in various applications.
  • Pinout

    The NCP551SN18T1G is a 1V voltage regulator in a SOT-23-5 package. It has 5 pins and the functions of each pin are as follows: Pin 1: Enable, Pin 2: GND, Pin 3: Output, Pin 4: Input, Pin 5: Output.
  • Manufacturer

    The manufacturer of the NCP551SN18T1G is ON Semiconductor. ON Semiconductor is a multinational semiconductor supplier company that designs and manufactures a wide range of products including power management, analog, logic, and discrete devices.
  • Application Field

    The NCP551SN18T1G is a high-speed MOSFET driver that can be used in a variety of applications, including switch mode power supplies, motor controls, and general purpose power amplification. It provides enhanced performance and efficiency, making it suitable for high-frequency and high-power applications.
  • Package

    The NCP551SN18T1G chip is a small outline transistor package (SOT), with a form factor of 6-Lead SOT-23 and a size of 2.9mm x 1.3mm x 1.1mm.

Datasheet PDF

Preliminary Specification NCP551SN18T1G PDF Download

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