The ISL85412 and ISL85413 are integrated synchronous buck regulators with a wide input voltage range of 3.5 V to 40 V. Similar to the other devices in the family, they have integrated MOSFETs (RDS(ON): 900/500 mΩ), a bootstrap diode and internal compensation for a compact solution size. However, the switching frequency is fixed at 700 kHz and the soft-start is internally set to 2.3 ms. Features once again include enable, power-good, and full protection for over current, over and under voltage, and temperature. The result is simple and robust devices for lower current, high voltage applications.