The FAN2365 is a highly efficient synchronous buck regulator. The regulator is capable Of operating With an input range from 4.5 V to 24 V and supporting up to 15 A continuous load currents. The FAN2365 utilizes Fairchild& constant on-time control architecture to provide excellent transient response and to maintain a relatively constant switching frequency. This device utilizes Pulse Frequency Modulation (PFM) rntxie to maximize light-load efficiency by reducing Witching frequency when the inductor is operating in discontinuous conduction mode at light bads, Mhile clamping the minimum frequency above the audible range With ultrasonic mode. 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 deuce during fault conditions. After thermal shutdown is activated, a hysteresis feature restarts the deuce When normal operating temperature is reached.