Maxim’s MAX17503 is a high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs. It operates over a 4,5 V to 60 V input and delivers up to 2,5 A and 0,9 V to 90% VIN output voltage. Built-in compensation across the output voltage range eliminates the need for external components.
The device features a peak-current-mode control architecture with a MODE feature that can be used to operate the device in pulse-width modulation (PWM), pulse-frequency 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/under-voltage lockout pin that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.
Feedback regulation accuracy over -40°C to +125°C is ±1,1% and the device is available in a 4 x 4 mm TQFN lead-free package with an exposed pad.
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