The document describes a 2.5 A step down switching regulator for automotive applications, which is qualified according to AEC-Q100 requirements. It features an operating input voltage range of 4 V to 36 V, a 3.3 V / (±2%) reference voltage, an adjustable output voltage from 1.235 V to 35 V, low dropout operation with 100% duty cycle, 250 kHz fixed frequency, voltage feedforward, zero load current operation, etc.