The LMR33620AQRNXRQ1 from Texas Instruments is a highly efficient, automotive-grade, synchronous step-down (buck) converter designed to meet the stringent demands of automotive power supply applications. This robust voltage regulator is capable of delivering up to 2A of continuous output current and operates over a wide input voltage range from 3.8V to 36V, making it suitable for a variety of automotive systems, including infotainment, telematics, and advanced driver assistance systems (ADAS).

With a frequency range of 400kHz to 2.1MHz, the LMR33620AQRNXRQ1 allows designers to optimize the size of the external components, thus minimizing the overall solution footprint. The adjustable switching frequency also enables the avoidance of critical noise-sensitive frequency bands, such as AM radio bands, which is particularly important in automotive applications.

The device integrates a high-side and low-side MOSFET, reducing the number of external components required and simplifying the design process. Its peak current-mode control provides fast transient response and eases loop stabilization. Additionally, the LMR33620AQRNXRQ1 offers a suite of protection features, such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation under adverse conditions.

For ease of use, the LMR33620AQRNXRQ1 includes an internal soft start feature that limits inrush current during startup, thereby reducing the stress on the input power source. The device is also available in a wettable flank QFN package, which supports optical inspection and enhances reliability in solder joint quality.

Key features of the LMR33620AQRNXRQ1 include:

• 2A Output Current Capability
• 3.8V to 36V Wide Input Voltage Range
• Adjustable Switching Frequency (400kHz to 2.1MHz)
• Integrated High-Side and Low-Side MOSFETs
• Peak Current-Mode Control
• Comprehensive Protection Features
• Wettable Flank QFN Package for Enhanced Reliability

Designed to meet the AEC-Q100 qualification for automotive applications, the LMR33620AQRNXRQ1 is a reliable and versatile solution for powering the next generation of automotive electronics.