Analog Devices MAX17550 Product Info

• Reduces External Components and Total Cost
  • No Schottky—Synchronous
  • Internal Compensation for Any Output Voltage
  • Built-In Soft-Start
  • All-Ceramic Capacitors, Compact Layout
• Reduces Number of DC-DC Regulators to Stock
  • Wide 4V to 60V Input
  • Adjustable 0.8V up to 0.9 x V_IN Output
  • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
• Reduces Power Dissipation
  • 22μA Quiescent Current
  • Peak Efficiency > 90%
  • PFM Enables Enhanced Light-Load Efficiency
  • 1.2μA Shutdown Current
• Operates Reliable in Adverse Environments
  • Peak Current-Limit Protection
  • Built-In Output-Voltage Monitoring Active-Low RESET
  • Programmable EN/UVLO Threshold
  • Monotonic Startup into Prebiased Load
  • Overtemperature Protection
  • High Industrial -40℃ to +125℃ Ambient Operating Temperature Range / -40℃ to +150℃ Junction Temperature Range

The MAX17550 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 60V input. The converter can deliver up to 25mA and generates output voltages from 0.8V up to 0.9 x V_IN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C.

The MAX17550 uses peak-current-mode control. The device can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes.

The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (5mm x 3mm) µMAX^® packages. Simulation models are available.

Applications

• Battery-Powered Equipment
• High-Voltage LDO Replacement
• HVAC and Building Control
• Industrial Sensors and Process Control