Step-down DC/DC converter MAX17761

step-down DC/DC converter
step-down DC/DC converter
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Electrical characteristics
step-down, high-voltage
Other characteristics
single-output, compact, programmable, adjustable, PWM
Input voltage

Min.: 4.5 V

Max.: 76 V

Output voltage

Min.: 0.8 V

Max.: 68.4 V


The MAX17761, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 76V input. The converter can deliver up to 1A current. Output voltage is programmable from 0.8V up to 90% of VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.5%. The device features a peak-current-mode control architecture and can be operated in either the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. Key Features Reduces External Components and Total Cost No Schottky—Synchronous Operation Internal Compensation Components All-Ceramic Capacitors, Compact Layout Reduces Number of DC-DC Regulators to Stock Wide 4.5V to 76V Input Output Adjustable from 0.8V up to 90% of VIN Delivers up to 1A Over Temperature 200kHz to 600kHz Adjustable Frequency with External Clock Synchronization Programmable Current Limit Reduces Power Dissipation Peak Efficiency > 90% PFM Mode Enables Enhanced Light-Load Efficiency Auxiliary Bootstrap LDO for Improved Efficiency 5μA Shutdown Current


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