AIC1384 AIC [Analog Intergrations Corporation], AIC1384 Datasheet - Page 12

• Manufacturer Part Number: AIC1384
• Description: DDR Termination Regulator
• Manufacturer: AIC [Analog Intergrations Corporation]

VREF=1.25V
VREF=1.25V
VREF=1.25V
4. The input capacitor should be placed as
5. A bypass capacitor, located close to the
APPLICATION EXAMPLES
SD
SD
SD
DDRⅠ Application
device is not available. Use vias to lead the
heat into the buried layer.
close as possible to the PVIN pin.
V
performance. Ranging from 0.01µF to 0.1µF
10nF
10nF
10nF
REF
1
2
3
4
1
2
3
4
1
2
3
4
pin,
AIC1384
AIC1384
AIC1384
GND
SD
VSENSE
VREF
GND
SD
VSENSE
VREF
GND
SD
VSENSE
VREF
can
VDDQ
AVIN
VDDQ
VDDQ
PVIN
AVIN
AVIN
PVIN
PVIN
VTT
be
VTT
VTT
VDDQ=2.5V
used
VDDQ=2.5V
VDDQ=2.5V
8
7
6
5
8
7
6
5
8
7
6
5
to
0.1uF
2.2~5.5V
improve
Cin
Cin
VIN=2.5V
VIN=3.3V
Cout
VTT=1.25V
Cout
Cout
VTT=1.25V
VTT=1.25V
Cin
1.8V
All the input rails connect to 2.5V rail is
recommend for the SSTL-2 termination scheme
application. The circuitry completes an optimal
power dissipation and component count.
Connect the AIC1384 power rail to 3.3V to provide
the maximum continuous output current if 1.8V and
2.5V rail are not available. Beware the junction
temperature to exceed the maximum due to large
current level. In this configuration AVIN will be
limited to operation on the 3.3V or 5V rail results
from PVIN can never exceed AVIN.
AVIN and PVIN have the ability to work with
separate supplies. PVIN can be operated on a
lower 1.8V rail and the AVIN can be connected to a
higher rail. Although this circuitry can obtain better
efficiency, but the maximum continuous current is
reduced due to the lower rail voltage. Increasing
the output capacitance can also help for large load
transients.
6. If long sense traces is used, the noise of
of ceramic capacitor is recommended.
V
switching I/O signals. A 0.1uF ceramic
capacitor connects to the V
used to filter high frequency signal.
SENSE
trace
may
occurs
SENSE
AIC1384
which from
pin can be
12