88PG8226A1-NFE1C000 Marvell, 88PG8226A1-NFE1C000 Datasheet - Page 3

• Manufacturer Part Number: 88PG8226A1-NFE1C000
• Manufacturer: Marvell

PRODUCT OVERVIEW
The 88PG82XX family integrates the dual synchronous
Step-Down (Buck) switching regulators housed in a 3 X
4mm QFN-20 package. Internally self-compensated, the
step-down regulator requires no external compensation
and works 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 1MHz, allowing
the use of low profile surface mount inductors and low
value capacitors. Each step-down regulator includes
programmable output voltage to allow the user 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 88PG82XX family operates from an input voltage
range of 2.75V to 5.5V, making the device well suited for
portable applications.
Other key features of the 88PG82XX family include soft
start, an internal current limit, an under-voltage lockout,
thermal shutdown, over voltage protection, and
power-on-reset signals.
Features
Figure 1: Typical Application Circuit: Output 1.8V/1.5A and 1.2V/1.5A
Copyright © 2008 Marvell
April 23, 2008, 2.00
Tiny 3 X 4 mm QFN-20 package
POR 1
POR 2
SDI
EN
100k
R4
160k
R7
100k
Document Classification: Proprietary Information
R3
R8
0
100k
R2
Field Programmable DSP Switcher™ Family
R5
51k
0.1uF
C1
R6
0
11
16
13
12
14
15
4
6
1
SGND
POR1
POR2
SDI
EN
VSET1
PSET1
VSET2
PSET2
3
SVIN
10 ohm
R1
88PG8226
17
PVIN2
Applications
Dual switching regulators
1MHz switching frequency
Low quiescent current of 2.1 mA (typ.)
Stable with low-ESR ceramic output capacitors
No external compensation required
Up to 95% efficiency
Input voltage range: 2.75V to 5.5V
Programmable output voltage range: 0.72V to 3.63V
Serial / Logic Programmability
Any Voltage
selections to provide up most flexibility
Built-in undervoltage lockout
Over voltage protection
Thermal shutdown protection
Output short circuit protection
Output voltage margining capability
Lead-free packages
Portable and handheld computing
Point-of-load power supplies
DSP power supplies
Disk drive power supplies
PGND1
PGND2
10
PVIN1
SFB1
SFB2
SW1
SW1
SW2
SW2
7
9
5
8
18
20
2
19
C2
22uF/6.3V
L1
3.3uH
L2
3.3uH
TM
C5
22uF/6.3V
Technology provides 64 output voltage
C3
C4
22uF/6.3V
22uF/6.3V
2.75V - 5.5V
2.5V/1.5A
1.5V/1.5A
Vin
Vout1
Vout2
Doc. No. MV-S103563-00 Rev. C
88PG82XX
Datasheet
Page 3