A new Step-Down DC-DC converter with a 60 volt maximum input voltage, and up to 2.5 amps of output current is now being distributed by Mouser. The MAX17503 from Maxim operates over an input voltage range of 4.5V to 60V and is said to deliver output voltages from 0.92V to a maximum of 90 percent of the input voltage. Peak efficiency is billed as greater than 90 perct. Operational temperature is from -40°C to 125°C, with thermal shutdown kicking in at 165°C.
The device features an internal protection mechanism that protects the device from high input voltages and short-circuit conditions. Hiccup-mode protection drops the output voltage to zero for a short time and then resumes normal voltage output, useful for circuit protection from current spikes that can occur when fans or motors are suddenly powered on.
This DC-DC converter is great for industrial power supplies, distributed supply regulation, base station power supplies, wall transformer regulation, high-voltage single-board systems, and general purpose point-of-load solutions. The MAX17503 needs only eight external components, reducing the total cost of design.