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LMR14050SSQDDARQ1 Application Field And Working Principle

Introduction

The LMR14050SSQDDARQ1 is a synchronous step-down DC-DC converter released by Texas Instruments. With features such as up to 10A current limiting and load disconnect , enabling very recognizable efficiency, the LMR14050SSQDDARQ1 is ideal for structural applications.

Application Field

The main application field for the LMR14050SSQDDARQ1 is structural designs related to industrial, communication and automotive electronics. This device makes use of a Wide Input Voltage (4.4V - 45V ) to deliver a steady 3.3V voltage providing up to 5A current, ensuring reliability.

Due to its Wide Input Voltage range and a guaranteed output current this makes this product ideal for industrial-related designs needing up to 5A current on a 3.3V line.

Features

The LMR14050SSQDDARQ1 features an adjustable switching frequency of up to 2MHz, to ensure a high line and load regulation ratio over the entire set load range. This feature makes it ideal for communication applications, offering enhanced derivate protection and EMC protection.

This device also features a very high power efficiency up to 97.4% for 10A current output and 3.3V output. It also produces very low dissipation losses and very low power output requiring less than 40mW of power at low load.

Working Principle

The working principle for the LMR14050SSQDDARQ1 is an integrated synchronization circuit that enables constant frequency operation, together with an adjustable frequency up to 2MHz from internal clock or from external clock. This synchronized clock, working in conjunction with an error amplifier and an internal high-side current sensing delivers good power efficiency in low power applications.

The adjustable switching frequency makes this device ideal for space-conscious structures where a high line and load regulation ratio is required. This device also makes use of a low fixed on time and a very low RDSon, ensuring operation at very low noise levels.

The LMR14050SSQDDARQ1 is also equipped with a low dropout regulator and a self-discharge pin, ensuring smooth current delivery and load disconnect at the load terminals, making it ideal for surge protection.

Conclusion

The LMR14050SSQDDARQ1 is a synchronous step-down DC-DC converter with up to 10A current limiting and load disconnect. This device is designed for structural uses in industrial, communication and automotive electronics applications. With an adjustable switching frequency of up to 2MHz and a guaranteed output current of 5A it makes this a reliable product for those use-cases.

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