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They are capable of operating with an input range from 4.5 V to 18 V, High Efficiency: Over 96% Peak supporting 6 A continuous load currents. Continuous Output Current: 6 A These devices utilize Fairchilds constant on-time PFM Mode for Light-Load Efficiency control architecture to provide excellent transient Ultrasonic or No-Ultrasonic Mode Options response and to maintain a relatively constant switching frequency. The FAN2306A / FAN2306MA utilize Pulse Excellent Line and Load Transient Response Frequency Modulation (PFM) mode to maximize light- Precision Reference: 1% Over Temperature load efficiency by reducing switching frequency when the inductor is operating in Discontinuous Conduction Output Voltage Range: 0.6 to 5.5 V Mode (DCM) at light loads. The FAN2306A includes an Programmable Frequency: 200 kHz to 1.5 MHz ultrasonic mode with minimum frequency clamp to keep the switching frequency above the audible range, while Programmable Soft-Start the FAN2306MA does not include the minimum frequency clamp to maximize efficiency to extremely Low Shutdown Current light loads. Adjustable Sourcing Current Limit Switching frequency and over-current protection can Internal Boot Diode be programmed to provide a flexible solution for various applications. Output over-voltage, under- Thermal Shutdown voltage, over-current, and thermal shutdown protections Halogen and Lead Free, RoHS Compliant help prevent damage to the device during fault conditions. After thermal shutdown is activated, a Applications hysteresis feature restarts the device when normal operating temperature is reached. Servers and Desktop Computers NVDC Notebooks, Netbooks Game Consoles Telecommunications Storage Base Stations Ordering Information Operating Output Part Number Configuration Temperature Package Current (A) Range FAN2306AMPX PFM with Ultrasonic Mode -40 to 125C 6 34-Lead, PQFN, 5.5 mm x 5.0 mm FAN2306MAMPX PFM, No Ultrasonic Mode -40 to 125C 6 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN2306A / FAN2306MA Rev. 1.0