FAN23SV70AMPX

FAN23SV70A — 20 A Synchronous Buck Regulator April 2016 FAN23SV70AMPX 20 A Synchronous Buck Regulator Features  VIN Range: 7 V to 24 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  Internal Boot Diode  Thermal Shutdown  Halogen and Lead Free, RoHS Compliant Description The FAN23SV70A is a highly efficient synchronous buck regulator. The regulator is capable of operating with an input range from 7 V to 24 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 FAN23SV70A 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. Switc...