FAN5070 Datasheet, PDF (4/14 Pages) Fairchild Semiconductor – High Performance Programmable Synchronous DC-DC Controller

FAN5070
Notes:
1. Steady State Voltage Regulation includes Initial Voltage Setpoint, Droop, Output Ripple and Output Temperature Drift and is
measured at the converter’s VFB sense point.
2. As measured at the converter’s VFB sense point. For motherboard applications, the PCB layout should exhibit no more than
0.5mΩ trace resistance between the converter’s output capacitors and the CPU. Remote sensing should be used for optimal
performance.
3. Using the VFB pin for remote sensing of the converter’s output at the load, and the appropriate droop, the converter will be
in compliance with Intel’s VRM 8.5 specification. If Intel specifications on maximum plane resistance from the converter’s
output capacitors to the CPU are met, the specifications at the capacitors will also be met.
Table 1. Output Voltage Programming Codes for FAN5070
VID25mV
VID3
VID2
VID1
0
0
1
0
1
0
1
0
0
0
0
1
1
0
0
1
0
0
0
1
1
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
0
1
1
0
1
1
1
0
0
1
1
0
1
1
1
0
0
1
0
1
1
1
0
1
0
1
0
1
1
1
0
1
0
1
0
0
1
1
0
0
0
1
0
0
1
1
0
0
0
0
1
1
1
0
1
1
0
0
1
1
1
0
1
1
0
0
1
0
1
0
1
0
Note:
1. 0 = processor pin is tied to GND.
1 = processor pin is pulled up to 3.3V.
4
VID0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Nominal V_OUT
1.050V
1.075V
1.100V
1.125V
1.150V
1.175V
1.200V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
1.475V
1.500V
1.525V
1.550V
1.575V
1.600V
1.625V
1.650V
1.675V
1.700V
1.725V
1.750V
1.775V
1.800V
1.825V
REV. 1.0.1 8/7/01