Power

Synchronous step-down converter brings integrated MOSFETs

9th January 2020
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The LMR36520 regulator from Texas Instruments is an easy-to-use, synchronous, step-down DC/DC SIMPLE SWITCHER converter. With integrated high-side and low-side power MOSFETs, output current up to two amps is delivered over a wide input voltage range of 4.2 to 65V. 

The transient tolerance that goes up to 70V reduces the solution size and cost to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36520 uses peak-current mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the requirement for an external supervisor.

Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment.

The LMR36520 is pin-to-pin compatible with the LMR36510 (65 V, 1 A) and LMR33620 and LMR33630 (36 V, 2 A/3 A), completing the family of scalable SIMPLE SWITCHER power supplies. This minimises the cost and effort associated with board layout modifications.

The LMR36520 is in an eight-pin HSOIC package.

To learn more, click here.

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