The MAX17576, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over an input voltage range of 4.5V to 60V. The converter can deliver up to 4A current. Output voltage is programmable from 0.9V up to 90% of VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±0.9%. Built-in compensation across the output-voltage range eliminates the need for external compensation components. The MAX17576 features a peak-current-mode control architecture. The device can operate either in constantfrequency based pulse-width modulation (PWM) or pulsefrequency modulation (PFM), or discontinuous-conduction mode (DCM) control schemes. A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input voltage level. The MAX17576 offers a low minimum on time that allows high switching frequencies and a small solution size. The MAX17576 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available.