88PG82XX
Datasheet
Table 3: Pin Descriptions
Pin #
Pin Name
Pin Type
Pin Description
14
VSET2
I
Voltage Set for Regulator 2.
1. Resistor Programming: Connect an external resistor to ground to set the
output voltage of the switching regulator. See the “Electrical
Characteristics” for resistor values and Output Voltage Settings. Use
resistor values with a tolerance of 5% or better. The total capacitance
across this pin and GND should be equal to 25 pF or less.
2. Logic Programming: Four output voltage levels (0.8V, 1.0V, 1.2V, and 1.5V)
can be set by connecting the VSET and PSET pins to either GND or SVIN.
15
PSET2
I
Percent Set for Regulator 2.
1. Resistor Programming: Connect an external resistor to ground to set the
output voltage of the switching regulator. See the “Electrical
Characteristics” for resistor values and Output Voltage Settings. Use
resistor values with a tolerance of 5% or better. The total capacitance
across this pin and GND should be equal to 25 pF or less. If the pin is not
used, it must be connected to GND.
2. Logic Programming: Four output voltage levels (0.8V, 1.0V, 1.2V, and 1.5V)
can be set by connecting the VSET and PSET pins to either GND or SVIN.
16
17
POR2
PVIN2
O
S
Power-On Reset 2.
This pin is an open drain output to indicate the status of the output voltage. The
output pin goes high 40 ms after the output voltage is within the specified
tolerance.
POR2 and POR1 can be connected to the same external pull up resistor to
indicate “both output good”.
Power Input Voltage for regulator 2: Internal power MOSFET source. Connect
the 10 µF decoupling capacitor between PVIN2 and PGND2 and position it as
close as possible to the IC.
NOTE: PVIN and PVIN2 must be connected together and should not be
separated.
19
PGND2
SW2
GND
O
Power Ground for regulator 2: The power ground must be connected to the
negative terminal of the input and output capacitors.
18, 20
Switch Node for regulator 2: Internal power MOSFET drain. Connects to an
external inductor.
Doc. No. MV-S103563-00 Rev. C
Page 14
Copyright © 2008 Marvell
Document Classification: Proprietary Information
April 23, 2008, 2.00
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
