12V, 4.5A Step-Down Voltage Regulator

Description

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 A to 20 A 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