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This literature is subject to all applicable copyright laws and is not for resale in any manner.FAN23SV04TAMPX 4 A Synchronous Buck Regulator for DDR Termination September 2015 FAN23SV04TAMPX 4 A Synchronous Buck Regulator for DDR Termination Description Features The FAN23SV04TA is a highly efficient, synchronous V Range: 7 V to 18 V Using Internal Linear IN buck regulator for use in tracking applications, such as Regulator for Bias DDR termination rails. The V input includes an DDQ V Range: 4.5 V to 5.5 V with V /P /P internal 2:1 resistive voltage divider to reduce total IN IN VIN VCC Connected to Bypass Internal Regulator circuit size and component count. The regulator operates with an input range from 7 V to 18 V and High Efficiency supports up to 4 A load currents. The device can operate from a 5 V rail (10%) if V , P , and P Continuous Output Current: 4 A IN VIN VCC are connected together to bypass the internal linear Internal Linear Bias Regulator regulator. Internal V Resistor Divider DDQ This device utilizes Fairchilds constant on-time control Excellent Line and Load Transient Response architecture to provide excellent transient response and to maintain a relatively constant switching frequency. Output Voltage Range: 0.5 to 1.5 V Switching frequency and sourcing over-current Programmable Frequency: 200 kHz to 1.5 MHz protection can be programmed to provide a flexible Programmable Soft-Start solution for various applications. Low Shutdown Current Output over-current, and thermal shutdown protections help prevent damage during fault conditions. A Adjustable Sourcing Current Limit hysteresis feature restarts the device when normal Internal Boot Diode operating temperature is reached. Thermal Shutdown Halogen and Lead Free, RoHS Compliant Applications Bus Termination Servers and Desktop Computers NVDC Notebooks, Netbooks Game Consoles Ordering Information Operating Output Part Number Configuration Package Temperature Range Current PWM Mode with FAN23SV04TAMPX -40 to 125C 4 A 34-Lead, PQFN, 5.5 mm x 5.0 mm V Tracking Input DDQ 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN23SV04TA Rev. 1.0