Analog Devices MAX17524 Product Info

• 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 60V Input
  • Adjustable Output Range from 0.9V up to 90% of V_IN
  • Delivers up to 3A on Each Output Over the Temperature Range
  • 100kHz to 1.1MHz Adjustable Frequency with External Clock Synchronization
  • Available in a 32-Pin, 5mm x 5mm TQFN Package
• Independent Input-Voltage Pins for Each Output
• Reduces Power Dissipation
  • Peak Efficiency of 94.4%
  • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
  • Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
  • 5.2μA Shutdown Current
• Operates Reliably in Adverse Industrial Environments
  • Hiccup-Mode Overload Protection
  • Independent Adjustable Soft-Start Pin and Programmable EN/UVLO Pin for Each Output
  • Monotonic Startup with Prebiased Output Voltage
  • Built-in Independent Output-Voltage Monitoring with Active-Low RESET for Each Output
  • Overtemperature Protection
  • High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction

The MAX17524 dual 3A, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFETs operates over an input-voltage range of 4.5V to 60V. The device can deliver up to 3A on each output and generates output voltages from 0.9V up to 90% of V_IN. This device features internal compensation.

The MAX17524 uses peak current-mode control, and can be operated in pulse-width modulation (PWM), pulse-frequency modulation (PFM), and discontinuous-conduction mode (DCM) to enable high efficiency under light-load conditions.

The feedback-voltage regulation accuracy is accurate to within ±1.4% over -40°C to +125°C. The device is available in a 32-pin (5mm x 5mm) Thin QFN (TQFN) package. Simulation models are available.

Applications

• Base Station Power Supplies
• Distributed Supply Regulation
• General-Purpose Point-of-Load
• High-Voltage Single-Board Systems
• Industrial Control Power Supplies
• Wall Transformer Regulation