FAN5056MV85

Input Voltage :
Switching Frequency :
Duty Cycle (Max) :
Mounting Style : SMD/SMT
Number of Outputs : 2
Maximum Operating Temperature : + 70 C
Package / Case : SOIC-24 Wide
Output Voltage : 1.05 V to 1.825 V
Output Current : 28 A


Features:

• Output programmable in 25mV steps from 1.05V to 1.825V using a dynamically programmable integrated 5-bit DAC
• Controls adjustable linears for Vclock (2.5V), Vnorthbridge (1.8V) or Vagp (selectable 1.5V/3.3V), and Vadj (1.2V nominal)
• Remote sense
• Programmable Active Droop™ up to 200mV
• Drives N-Channel MOSFETs
• Overcurrent protection using MOSFET sensing
• Overvoltage protection including startup
• 85% efficiency typical at full load
• Integrated Power Good and Enable/Soft Start functions
• Meets Intel VRM8.5 specifications using minimum number of external components
• 24 pin SOIC package


Application

• Power supply for Pentium^® III Platforms
• VRM for Pentium III processor
• Programmable multi-output power supply


Pinout




Specifications

Supply Voltage VCCP to GND	15V
Supply Voltage VCCA to GND	13.5V
Voltage Identification Code Inputs, VID0-VID4	VCCA
All Other Pins	13.5V
Junction Temperature, TJ	150°C
Storage Temperature	-65 to 150°C
Lead Soldering Temperature, 10 seconds	300°C
Thermal Resistance Junction-to-case, 1JA	75°C/W

Note 1: Component mounted on demo board in free air.


Description

The FAN5056 is a synchronous mode DC-DC controller IC which provides a highly accurate, programmable set of output voltages for multi-voltage platforms such as the Intel Pentium III, and provides a complete solution for all Intel VRM8.5 CPU applications, and for other high-performance processors. The FAN5056 features remote voltage sensing, independently adjustable current limit, and a proprietary wide-range Programmable Active Droop™ for optimal converter transient response and VRM8.5 compliance. The FAN5056 uses a 5-bit D/A converter to dynamically program the output voltage during operation from 1.05V to 1.825V in 25mV steps. The FAN5056 uses a high level of integration to deliver load currents in excess of 28A from a 5V source with minimal external circuitry. Synchronous-mode operation offers optimum efficiency over the entire specified output voltage range. An on-board precision low TC reference achieves 0.8% voltage regulation without expensive external components. The FAN5056 includes linear regulator controllers for Vclock (2.5V),Vnorthbridge (1.8V) or Vagp (selectable 1.5V/3.3V), and Vadjustable (1.2V nominal) each adjustable with an external divider. The FAN5056 also offers integrated functions