MVPG30x/MVPG31
1 MHz, 3.0A Peak Current-Limit Step-Down Regulator
with AnyVoltage™ Technology
Datasheet
PRODUCT OVERVIEW
The Marvell
®
MVPG30x/MVPG31 is an intelligent digital
synchronous step-down (Buck) switching regulator
housed in a 4 mm x 3 mm DFN-12 package. The
MVPG15x has an additional on-chip Low-Drop-Out
(LDO) regulator controller. Internally self-compensated,
the step-down regulator requires no external
compensation and work with low-ESR output capacitors
to simplify the design, minimize the board space, and
reduce the amount of external components. The
switching frequency for the step-down regulator is
1 MHz, allowing the use of low profile surface mount
inductors and low value capacitors. The step-down
regulator includes programmable output voltage to
provide the user the ability to easily set the output
voltage with external resistors, logic control, or serial
data interface. The output voltage range is 0.72V to
3.63V.
The LDO regulator controller with an external P-Channel
MOSFET forms a low dropout regulator capable of
driving 800 mA output current. The output voltage of the
LDO regulator is fixed.
The MVPG30x/MVPG31 operate from an input voltage
range of 3.0V to 5.5V, making the device well-suited for
portable applications.
Other key features of the MVPG30x/MVPG31 include an
internal current limit for the step-down regulator, an
Under Voltage Lockout (UVLO), and thermal shutdown.
Features
Tiny 4 mm x 3 mm DFN-12 package
1 MHz switching frequency
Small and low profile inductors
Stable with ceramic output capacitors
No external compensation required
Minimum amount of external components
Over 95% efficiency
High peak switch current limit: 3.0A
Input voltage range: 3.0V to 5.5V
Serial/Logic programmability
AnyVoltage™ Technology provides 64 output
voltage selections to provide flexibility
Programmable output voltage range: 0.72V to 3.63V
P-Channel LDO regulator controller with
programmable current limit (MVPG30x)
Lead-free packages
Built-in under voltage lockout
Over voltage protection
Thermal shutdown protection
Output voltage margining capability
Application
Portable computing
Point of load power supplies
DSP power supplies
Disk drive power supplies
Figure 1: Typical High Efficiency 5.0V to 0.8V/2.0A Step-Down Regulator with 3.3V LDO Regulator
V
IN
+3.0V to + 5.5V
R1
R2
10
C2
10uF/6.3V
7
8
C1
0.1uF
R3
11K
11
47 mohm
U1
PVIN
SVIN
ILIM
LDR
3
2
FDC642 P
C3
10uF/6.3V
V
OUT1
3.3V/up to 0.8A
1
LFB
VSET
MVPG30B
12
6
PSET
SW
10
4
PGND
SHDN
SGND
SFB
5
L1
2.0uH
V
OUT2
0.8V/2.0A
Caution
This is a very high frequency device and proper PCB layout is required. Refer to
for further information.
Copyright © 2008 Marvell
April 14, 2008, 2.00
Document Classification: Proprietary
EP
C4
22uF/6.3V
Doc. No. MV-S102808-00 Rev. G
Page 3
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
