FAN5059 PRODUCT SPECIFICATION
4
REV. 1.0.4 8/14/03
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
0.5m
Ω
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, the converter will be in compliance with Intel’s VRM 8.4
specification of +50, –80mV. If Intel specifications on maximum plane resistance from the converter’s output capacitors to the CPU
are met, the specification of +40, –70mV at the capacitors will also be met.
4. Actual output voltage (V
nom
) at 0A load is 1% higher than specified in the “Typical” column.
Duty Cycle 0 100 %
5V UVLO • 3.74 4 4.26 V
12V UVLO • 7.65 8.5 9.35 V
Soft Start Current • 5 10 17 µA
VTT Linear Regulator
Output Voltage
4
I
LOAD
≤
2A • 1.455 1.5 1.545 V
Under Voltage Trip Level Over Current 80 %V
O
VCLK Linear Regulator
Output Voltage
4
I
LOAD
≤
2A • 2.425 2.5 2.575 V
Under Voltage Trip Level Over Current 80 %V
O
VAGP Linear Regulator
Output Voltage
4
I
LOAD
≤
2A, TYPEDET=0V • 1.455 1.5 1.545 V
Output Voltage I
LOAD
≤
2A, TYPEDET=OPEN • 3.135 3.3 3.465 V
Under Voltage Trip Level Over Current 80 %V
O
Common Functions
Oscillator Frequency • 255 310 345 kHz
PWRGD Threshold Logic HIGH, All Outputs
Logic LOW, Any Output
•
•
88
84
112
116
%V
OUT
Linear Regulator Under Voltage
Delay Time
Over Current 30 µsec
Electrical Specifications
(Continued)
(V
CCA
= 5V, V
CCP
= 12V, V
OUT
= 2.0V, and T
A
= +25°C using circuit in Figure 1 unless otherwise noted.)
The • denotes specifications which apply over the full operating temperature range.
Parameter Conditions Min. Typ. Max. Units
