MAX17521 Datasheet | Maxim Integrated

Description The MAX17521 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 1A at each output. Each output is programmable from 0.9V to 92%VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.7%. The MAX17521 uses peak-current-mode control. Each output can be operated in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. The MAX17521 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available. Applications - - Industrial Control Power Supplies - - CPU, DSP, or FPGA Power - - Distributed Supply Regulation - - General-Purpose Point of Load Ordering Information appears at end of data sheet. Typical Application Circuit Benefits and Features - - Reduces External ponents and Total Cost - No Schottky- Synchronous Operation - All-Ceramic Capacitors, pact Layout - - Reduces Number of DC-DC Regulators to Stock - Wide 4.5V to 60V Input - Each Output Adjustable From 0.9V to 92%VIN - Pin-Selectable 560k Hz or 300k Hz Switching Frequency - Independent Input Voltage Pin for Each Output - - Reduces Power Dissipation - Peak Efficiency > 90% - PFM Mode Enables Enhanced Light-Load Efficiency - 1μA Shutdown Current - - Operates Reliably in Adverse Industrial Environments - Hiccup Mode Overload Protection - Adjustable Soft-Start Pin for Each Output - Built-In Output Voltage Monitoring with RESET for Each Output - Adjustable EN/UVLO Threshold for Each Output - Monotonic Startup Into Prebiased Load - Overtemperature Protection - -40°C to +125°C Operation C1 2.2μF VIN 7.5V- 60V C2 2.2μF VOUT1 5V, 1A C3 10μF R1 82.5kΩ R2 18.2kΩ C6 1μF L1 22μH EN/UVLO 1 VIN1 PGND...