Maxim Integrated's MAX16939ATESA/V+ Automotive Step-Down Converter

The MAX16939ATESA/V+ is a high-efficiency, synchronous step-down DC-DC converter designed by Maxim Integrated, specifically tailored for automotive applications. This power management integrated circuit (PMIC) is engineered to deliver a continuous output current up to 2.2A, making it an ideal solution for powering various automotive subsystems such as infotainment, navigation, and advanced driver assistance systems (ADAS).

With an input voltage range of 3.5V to 36V, the MAX16939ATESA/V+ can handle the wide voltage fluctuations commonly found in automotive power systems, including cold-crank and load-dump scenarios. It also provides a robust defense against the harsh electrical environment of a vehicle with features like overvoltage protection, undervoltage lockout, and thermal shutdown.

The converter operates at a fixed switching frequency of 2.1MHz, which allows for the use of small, low-profile inductors and capacitors, thereby reducing the overall solution size. This high-frequency operation also helps in minimizing interference with AM radio bands, a critical consideration in automotive design.

Maxim Integrated's MAX16939ATESA/V+ boasts an impressive efficiency level that minimizes power loss and heat generation. The device features a peak efficiency of up to 95%, ensuring that the system remains energy-efficient, which is particularly important in battery-operated vehicles to maximize range.

For design flexibility, the MAX16939ATESA/V+ offers an adjustable output voltage from 1V to 10V, which can be set using external resistors. This versatility makes it suitable for a wide array of power supply designs. Additionally, the device is available in a thermally efficient, 8-pin TDFN-EP package, which is critical for maintaining performance and reliability in the temperature-extreme conditions found in automotive environments.

The MAX16939ATESA/V+ is AEC-Q100 qualified, ensuring that it meets the stringent reliability standards required for automotive applications. With its combination of high efficiency, robust protection features, and compact size, the MAX16939ATESA/V+ from Maxim Integrated is an excellent choice for designers looking to create reliable and efficient power supplies in the automotive industry.