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NCP303LSN45T1 from ON,ON Semiconductor

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NCP303LSN45T1

Manufacturer: ON, MOTO

Voltage Detector Series with Programmable Delay

Partnumber Manufacturer Quantity Availability
NCP303LSN45T1 ON, MOTO 1306 In Stock

Description and Introduction

Voltage Detector Series with Programmable Delay The **NCP303LSN45T1** is a high-performance, low-dropout (LDO) voltage regulator designed for precision power management in modern electronic systems. Manufactured by ON Semiconductor, this component delivers a fixed output voltage of **4.5V** with excellent line and load regulation, making it ideal for applications requiring stable and reliable power.  

Featuring a low dropout voltage, the NCP303LSN45T1 ensures efficient operation even when the input voltage is close to the output level, minimizing power dissipation. Its ultra-low quiescent current enhances energy efficiency, making it suitable for battery-powered devices and portable electronics.  

The regulator incorporates built-in protection features, including **thermal shutdown** and **current limiting**, safeguarding against overheating and excessive current draw. With a compact **SOT-23-5** package, it offers a space-saving solution for PCB designs without compromising performance.  

Common applications include **microcontroller power supplies, IoT devices, sensors, and consumer electronics**, where stable voltage regulation is critical. Its robust design and high accuracy make it a dependable choice for engineers seeking a balance between performance and power efficiency.  

The NCP303LSN45T1 exemplifies modern LDO technology, combining reliability, precision, and compact form factor to meet the demands of today’s electronic systems.

Application Scenarios & Design Considerations

Voltage Detector Series with Programmable Delay

Alternative Part Number

  • MAX6427UR45+T --: Voltage supervisor with 4.5V threshold and open-drain reset output, functionally equivalent to the NCP303L series.
  • TPS3839G45DBVR --: Low-power voltage detector with 4.5V trip point and active-low reset, suitable drop-in replacement in most designs.
  • MCP112T-450E/TT --: 4.5V voltage supervisor in SOT-23 with active-low output, comparable threshold accuracy and low quiescent current.
  • MC33464H-45 --: Voltage detector/supervisor with 4.5V threshold in a similar SOT-23 package, functionally equivalent to the NCP303 series.
  • S-80845CLNB --: 4.5V CMOS voltage detector with open-drain output in SOT-23, a common cross-reference for NCP303-type supervisors.
  • BD45451G --: 4.5V reset IC voltage detector in SOT-23, offering comparable threshold accuracy and low current consumption.

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