12V, 4.5A Step-Down Voltage Regulator

12V, 4.5A Step-Down Voltage Regulator Input voltage: 13.3 V to 50 V Output voltage: 12 V with 4% accuracy Typical maximum continuous output current: 2.3 A to 6.5 A (see the maximum continuous output current graph below) Typical efficiency of 90% to 95%, depending on input voltage, output voltage, and load (see the efficiency graph below) Switching frequency: ~500 kHz under heavy loads Power-save mode with ultrasonic operation that increases light load efficiency by reducing switching frequency, but keeps it above the audible range (20 kHz) 2 mA to 4 mA typical no-load quiescent current (see the quiescent current graph below) Enable input with precise cutoff threshold for disconnecting the load and putting the regulator into a low-power state that draws approximately 10 µA to 20 µA per volt on VIN “Power good” output indicates when the regulator cannot adequately maintain the output voltage Output undervoltage and overvoltage protection Soft-start feature limits inrush current and gradually ramps output voltage Integrated reverse-voltage protection up to 40 V, over-current and short-circuit protection, over-temperature shutoff Compact size: 1″ × 1″ × 0.375″ (25.4 mm × 25.4 mm × 9.5 mm) Three 0.086″ mounting holes for #2 or M2 screws