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NCP1729SN35T1G from ON安森美,ON Semiconductor

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NCP1729SN35T1G

Manufacturer: ON安森美

Switched Capacitor Voltage Inverter

Partnumber Manufacturer Quantity Availability
NCP1729SN35T1G ON安森美 3520 In Stock

Description and Introduction

Switched Capacitor Voltage Inverter The **NCP1729SN35T1G** is a high-performance, low-dropout (LDO) voltage regulator designed for applications requiring stable and efficient power management. Manufactured by ON Semiconductor, this component delivers a fixed output voltage of **3.5V** with a maximum output current of **300mA**, making it suitable for power-sensitive devices such as portable electronics, IoT modules, and embedded systems.  

Featuring an ultra-low dropout voltage of **120mV at 300mA**, the NCP1729SN35T1G ensures efficient operation even with minimal input-to-output differentials, extending battery life in portable applications. Its low quiescent current of **40µA** further enhances energy efficiency, while built-in protection mechanisms, including **thermal shutdown and current limiting**, safeguard against potential faults.  

The device operates over a wide input voltage range of **2.3V to 5.5V**, accommodating various power sources. Its compact **SOT-23-5** package makes it ideal for space-constrained designs. Additionally, the LDO offers excellent line and load regulation, ensuring stable performance under varying conditions.  

With its combination of low noise, high PSRR (Power Supply Rejection Ratio), and robust protection features, the NCP1729SN35T1G is a reliable choice for designers seeking a compact, efficient, and dependable voltage regulation solution.

Application Scenarios & Design Considerations

Switched Capacitor Voltage Inverter

Alternative Part Number

  • TPS60403DBVR --: Pin-compatible switched-capacitor voltage inverter in SOT-23-5 with similar -3.5V class output and low quiescent current, widely available and a common drop-in for NCP1729 designs.
  • LM2664M6X --: SOT-23-6 charge-pump inverter providing a comparable negative output from a positive supply, good efficiency and low ripple, suitable as a functional replacement with minor layout adjustment.
  • MAX889TESA+ --: Regulated inverting charge pump offering a similar negative output range and low noise, usable as an alternative when a slightly larger package and external component changes are acceptable.

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