FAN2315AMPX: 15 A Synchronous Buck Regulator

The FAN2315AMPX is a highly efficient integrated synchronous buck regulator. The regulator is capable of operating with an input range from 4.5 V to 18 V and supporting up to 15 A load currents.

The FAN2315A utilizes Fairchild’s constant on-time control architecture to provide excellent transient response and to maintain a relatively constant switching frequency. The device utilizes Pulse Frequency Modulation (PFM) mode to maximize light-load efficiency by reducing switching frequency when the inductor is operating in discontinuous conduction mode at light loads.

Switching frequency and over-current protection can be programmed to provide a flexible solution for various applications. Output over-voltage, under-voltage, over-current, and thermal shutdown protections help prevent damage to the device during fault conditions. A hysteresis feature restarts the device when normal operating temperature is reached.

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Features

• V_IN Range: 4.5 V to 18 V
  
• High Efficiency: Over 96% Peak
  
• Continuous Output Current: 15 A
  
• PFM Mode for Light-Load Efficiency
  
• Output Voltage Range: 0.6 to 5.5 V
  
• Programmable Frequency: 200 kHz to 1 MHz
  
• Programmable Soft-Start
  
• Low Shutdown Current
  
• Adjustable Sourcing Current Limit
  
• Internal Boot Diode
  
• Thermal Shutdown
  
• Halogen and Lead Free, RoHS Compliant