FAN23SV20MAMPX: 20 A Synchronous Buck Regulator

Description: The FAN23SV20MAPX is a highly efficient synchronou...
  • The FAN23SV20MAPX is a highly efficient synchronous buck regulator. The regulator is capable of operating with an input range from 7 V to 18 V and supporting up to 20 A load currents. The device can operate from a 5 V rail (±10%) if VIN, PVIN, and PVCC are connected together to bypass the internal linear regulator.
    The FAN23SV20MA 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. After thermal shutdown is activated, a hysteresis feature restarts the device when normal operating temperature is reached.
  • Features
  • VIN Range: 7 V to 18 V Using Internal Linear Regulator for Bias
  • VIN Range: 4.5 V to 5.5 V with VIN/PVIN/PVCC Connected to Bypass Internal Regulator
  • High Efficiency: Over 96% Peak
  • Continuous Output Current: 20 A
  • Internal Linear Bias Regulator
  • Accurate Enable facilitates VIN UVLO Functionality
  • PFM Mode for Light-Load Efficiency
  • Excellent Line and Load Transient Response
  • Precision Reference: ±1% Over-Temperature
  • 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
  • Thermal Shutdown
  • Internal Boot Diode
  • Halogen and Lead Free, RoHS Compliant
  • Applications
  • Servers, Desktop Computers
  • Notebooks, Netbooks
  • Game Consoles
  • Telecommunication
  • Storage
  • Consumer Electronics
  • Industrial
  • Technical Documentation & Design Resources
    Availability and Samples
    FAN23SV20MAMPX
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: 20 A Synchronous Buck Regulator
  • Package Type: PQFN-34
  • Package Case Outline: 483AM
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):8 to 12
  • Arrow:0
  • Mouser:>1K
  • ON Semiconductor:6,000
  • Specifications
  • Topology: Step-Down 
  • Control Mode: null 
  • VCC Min (V): null 
  • VCC Max (V): 18 
  • VO Typ (V): Adjustable 
  • IO Typ (A): 20 
  • Efficiency (%): ≥90% 
  • fSW Typ (kHz): Adjustable 
  • Package Type: PQFN-34 
  • ON Semiconductor Full Web Site