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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flmr38015-q1″>View Datasheet
Texas Instruments LMR38015-Q1 Synchronous Buck Converters are designed to minimize the need for external surge suppression components by regulating over a wide input voltage range. The LMR38015-Q1 operates during input voltage dips as low as 4.2V, at nearly 100% duty cycle if needed. This feature makes this device an excellent choice for 48V battery automotive applications and MHEV/EV systems, as the maximum input voltage is 85V.
The LMR38015-Q1 features a high voltage enable pin to enable the device by connecting the device to the wide input supply voltage or by having precise UVLO control across start-up and shutdown. With built-in filtering and delay, the Power-Good flag accurately indicates system status, eliminating the need for an external supervisor. The device incorporates a pseudorandom spread spectrum option for minimal EMI. The switching frequency can be configured between 200kHz and 2.2MHz to avoid noise-sensitive frequency bands. In addition, the frequency can be programmed through the RT pin for improved efficiency at low operating frequencies or by having a smaller design size at high operating frequencies.
The device has built-in protection features such as hiccup mode short-circuit protection, cycle-by-cycle current limit, and thermal shutdown in case of excessive power dissipation. The Texas Instruments LMR38015-Q1 is qualified for automotive AEC-Q100 Grade 1 and is available in a 12-pin WSON package.
