RU82566DC INTEL [Intel Corporation], RU82566DC Datasheet - Page 16

• Manufacturer Part Number: RU82566DC
• Description: 82566 Gigabit Platform LAN Connect
• Manufacturer: INTEL [Intel Corporation]

82566 Gigabit Platform LAN Connect Networking Silicon Datasheet
3.5.1.1
3.5.1.2
12
Table 14. 1.8V DC External Power Supply Parameters
Table 15. 1.0V DC External Power Supply Parameters
a. This is dependent on capacitance.
a. To reduce BOM costs, the ICH8/ICH9 1.05V +/-5% supply can be used.
b. This is dependent on capacitance.
In-Rush Current
To meet 375 mA in-rush current requirements (not including external capacitors), the ramp time
should be 5 ms to 100 ms on all power rails. For faster ramps (100 µs to 5 ms), higher in-rush
current is expected due to the high charging current of the decoupling capacitors on the 3.3V DC,
1.8V DC, and 1.0V DC power rails.
82566 Power Up Sequence (External LVR)
Designs must comply with power sequencing requirements to avoid latch-up and forward-biased
internal diodes.
The board designer controls the power up sequence with the following stipulations:
For power down, there is no requirement (only charge that remains is stored in the decoupling
capacitors).
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Operational Range
Capacitance ESR
Capacitance ESR
1.8V must not exceed 3.3V by more than 0.3 V.
1.0V must not exceed 3.3V by more than 0.3 V.
Monotonicity
Capacitance
Capacitance
Decoupling
Decoupling
Overshoot
Overshoot
Rise Time
Ripple
Slope
Title
Title
Equivalent series resistance of output
Ramp rate at any given time between
Equivalent series resistance of output
Voltage range for normal operating
Max: 0.8*V(max)/Rise time (min)
Maximum voltage ripple (peak to
Min: 0.8*V(min)/Rise time (max)
Maximum overshoot allowed
Time from 10% to 90% mark
Maximum overshoot allowed
Voltage dip allowed in ramp
Capacitance range
Capacitance range
10% and 90%
Description
Description
capacitance
capacitance
conditions
peak)
b
0.95
Min
Min
0.1
7.6
15
15
-
-
-
-
-
-
1.05
Max
Max
100
100
100
25
50
17
40
25
50
0
a
Units
Units
mΩ
mV
mΩ
mV
V/s
mV
mV
ms
µF
µF
V