National Semiconductor

LP3874EMP-3.3

LP3874EMP-3.3 Description

The LP3874EMP-3.3 is a high-performance linear voltage regulator designed by National Semiconductor, known for its ultra-low dropout voltage and fast transient response. This regulator is ideal for applications requiring a stable 3.3V output with a maximum output current of 800mA. The LP3874EMP-3.3 features a fixed output voltage, ensuring consistent power delivery to sensitive electronic components. With a maximum input voltage of7 V and a dropout voltage of only 0.35V at 800mA, this regulator stands out for its efficiency and reliability in low-voltage applications.

LP3874EMP-3.3 Features

• Ultra-Low Dropout Voltage: The LP3874EMP-3.3 boasts a maximum dropout voltage of 0.35V at 800mA, making it highly efficient even at low input-to voltage-output differentials.
• High Output Current: Capable of delivering up to 800mA of output current, this regulator is suitable for powering a wide range of electronic devices and systems.
• Fixed Output Voltage: The regulator provides a stable 3.3V output, ensuring reliable operation for devices that require a precise voltage supply.
• Enable Control Feature: The LP3874EMP-3.3 includes an enable pin, allowing users to control the regulator's operation and reduce power consumption when not in use.
• Protection Features: Over-current, over-temperature, and short-circuit protections ensure the regulator longevity's and reliability in various operating conditions.
• High PSRR: With a power supply rejection ratio (PSRR) ranging from 73dB to 57dB at 120Hz, the LP3874EMP-3.3 effectively filters out noise from the input supply, resulting in cleaner output voltage.
• Surface Mount Packaging: The surface mount package type facilitates easy integration into compact and high-density PCB designs.
• Active Product Status: As active an product, the LP3874EMP-3.3 is readily available for purchase and integration into new designs.

LP3874EMP-3.3 Applications

The LP3874EMP-3.3 is well-suited for a variety of applications where a stable and efficient power supply is critical. Some specific use cases include:

• Consumer Electronics: Ideal for powering smartphones, tablets, and other portable devices that require a stable 3.3V supply.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that demand reliable and efficient power regulation.
• Telecommunications: Can be used in base and stations networking equipment where low dropout voltage and high efficiency are essential.
• Automotive Electronics: Applicable in automotive systems such as infotainment units and electronic control units (ECUs) that require robust power management.
• Medical Devices: Perfect for medical equipment like diagnostic tools and monitoring devices that need precise voltage regulation and low noise levels.

Conclusion of LP3874EMP-3.3

The LP3874EMP-3.3 from National Semiconductor is a versatile and efficient linear voltage regulator that offers significant advantages over similar models. Its ultra-low dropout voltage, high output current capability, and robust protection make features it an ideal choice for a wide range of applications. The regulator's fixed 3.3V output and enable control feature provide additional flexibility and power management options. Whether used in consumer electronics, industrial systems, or medical devices, the LP3874EMP-3.3 ensures reliable and efficient power delivery, making it a standout solution in the field of linear voltage regulators.