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Home > products > Flash Memory IC Chip > SOT23-5 NCP1521BSNT1G DC DC Power Switching Regulator 1.5MHz 600mA

SOT23-5 NCP1521BSNT1G DC DC Power Switching Regulator 1.5MHz 600mA

SOT23-5 NCP1521BSNT1G DC DC Power Switching Regulator 1.5MHz 600mA
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Power Switching Regulator
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SOT23-5 Power Switching Regulator


NCP1521BSNT1G Power Switching Regulator


Buck Converter 1.5MHz 600mA


NCP1521BSNT1G Power Switching Regulator NCP1521 SOT23-5 Buck Converter DC-DC 1.5 MHz 600 mA

NCP1521B Buck Converter - DC-DC 1.5 MHz, 600 mA


The NCP1521B stepdown DCDC converter is a monolithic integrated circuit optimized for portable applications powered from one cell LiIon or three cell Alkaline/NiCd/NiMH batteries.

The part,available in adjustable output voltage versions ranging from 0.9 V to 3.9 V, is able to deliver up to 600 mA.

It uses synchronous rectification to increase efficiency and reduce external part count.

The device also has a builtin 1.5 MHz (nominal) oscillator which reduces component size by allowing smaller inductors and capacitors.

Automatic switching PWM/PFM mode offers improved system efficiency.
Additional features include integrated softstart, cyclebycycle current limiting and thermal shutdown protection.

The NCP1521B is available in a space saving, low profile TSOP5 and UDFN6 packages.


Up to 96% Efficiency
BestInClass Ripple, including PFM Mode
Sources up to 600 mA
1.5 MHz Switching Frequency
Adjustable Output Voltage from 0.9 V to 3.9 V
Synchronous Rectification for Higher Efficiency
2.7 V to 5.5 V Input Voltage Range
Low Quiescent Current
Shutdown Current Consumption of 0.3 A
Thermal Limit Protection
Short Circuit Protection
All Pins are Fully ESD Protected
This is a PbFree Device
Typical Applications
Cellular Phones, Smart Phones and PDAs
Digital Still/Video Cameras
MP3 Players and Portable Audio Systems
Wireless and DSL Modems
Portable Equipment
USB Powered Devices


Ordering information

1.- We can ship the products all the world.
2.- DHL, FedEx, TNT, UPS, EMS, Post, Hongkong Post are all available.
3.- The item will be sent out with 3 days after receiving the payment.
4.- Please make sure your delivery address and contact telephone number are correct when you bid the item.
5.- You can track the situation of your product website after they are shipped out
Import Taxes or Duties
1.- Import duties, taxes and other charges happened in your side are not included in the price of the item. These fees are afforded by buyer.
2.- Please check with you country's Customs office to determine what these additional costs will be before purchase.
3.- Please confirmed detailed information about delivery invoice. For example, how much price we should write the waybill invoice, or how to describe the item, etc..


If you have any questions, please feel free to contact us. We will reply within 24 hours, please do not rush the negative feedback.


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10 pcs