Switching Regulator Suits Auto Apps

Thanks to burst-mode operation, the LT3481—a 2A, 36V step-down switching regulator—keeps quiescent current under 50 μA. Devised by Linear Technology, the LT3481 operates within a VIN range of 3.6V to 34V, making it suitable for load dump and cold-crank conditions found in automotive applications. Its 3.2A internal switch can deliver up to 2A of continuous output current to voltages as low as 1.26V. The LT3481's burst-mode operation offers low quiescent current. This serves well in applications such as automotive or telecom systems, which demand always-on operation and optimum battery life.