Linear Technology LTC3631EMS8E-5 High Efficiency, Low Noise Step-Down Converter

The LTC3631EMS8E-5 is a high-performance step-down DC/DC converter designed and manufactured by Linear Technology, a leader in analog integrated circuits. This versatile converter is capable of delivering up to 100mA of continuous output current with a wide input voltage range of 4.5V to 45V, making it an ideal choice for a variety of applications, including automotive, industrial, and telecommunications systems.

This efficient device features a low quiescent current and a low noise, fixed-frequency operation at 2.1MHz, which allows the use of small, low-cost capacitors and inductors while minimizing the footprint on the PCB. The LTC3631EMS8E-5 operates with a high efficiency of up to 92%, ensuring minimal heat generation and reliable performance even in thermally challenging environments.

The LTC3631EMS8E-5 is equipped with a range of protective features to ensure the stability and longevity of both the converter and the overall system. These features include over-temperature protection, over-current protection, and a power-good flag that indicates when the output voltage is within regulation. Additionally, the device offers both low ripple Burst Mode operation and a forced continuous mode, providing flexibility for systems that require low noise or have specific power-saving requirements.

Enclosed in an MSOP-8 package, the LTC3631EMS8E-5 is designed with a thermally enhanced surface mount, which aids in heat dissipation and supports its use in compact designs. The fixed 5V output voltage simplifies the design process, as no external feedback resistors are required for setting the output voltage.

Overall, the LTC3631EMS8E-5 from Linear Technology is a robust and efficient solution for designers looking to implement a reliable power supply in their electronic systems. Its combination of high efficiency, low noise operation, and comprehensive protection features make it a top choice for a wide range of power conversion applications.

Key Features:

• Wide Input Voltage Range: 4.5V to 45V
• Up to 100mA Output Current
• Fixed 5V Output Voltage
• High Efficiency: Up to 92%
• Low Noise, Fixed-Frequency Operation at 2.1MHz
• Low Quiescent Current
• Over-Temperature and Over-Current Protection
• Power-Good Flag
• MSOP-8 Package with Thermal Enhancements
• Low Ripple Burst Mode Operation
• Forced Continuous Mode Available