MAX8588 Maxim Integrated Products, MAX8588 Datasheet
MAX8588
Manufacturer Part Number
MAX8588
Description
High-Efficiency Low-IQ PMIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX8588.pdf
(31 pages)
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The MAX8588 power-management IC is optimized for
devices using Intel X-Scale™ microprocessors, includ-
ing smartphones, PDAs, internet appliances, and other
portable devices requiring substantial computing and
multimedia capability at low power.
The IC integrates seven high-performance, low-operating-
current power supplies along with supervisory and
management functions. Included are three step-down
DC-DC outputs, three linear regulators, and a seventh
always-on output. DC-DC converters power I/O, memo-
ry, and the CPU core. The I/O supply can be preset to
3.3V or adjusted to other values. The DRAM supply is
preset for 3.3V or 2.5V, or it can be adjusted with exter-
nal resistors. The CPU core supply is serial pro-
grammed for dynamic voltage management and can
supply up to 0.5A. Linear-regulated outputs are provid-
ed for SRAM, PLL, and USIM supplies.
To minimize quiescent current, critical power supplies
have bypass “sleep” LDOs that can be activated when
output current is very low. Other functions include sep-
arate on/off control for all DC-DC converters, low-bat-
tery and dead-battery detection, a reset and power-OK
output, a backup-battery input, and a two-wire serial
interface.
All DC-DC outputs use fast, 1MHz PWM switching and
small external components. They operate with fixed-fre-
quency PWM control and automatically switch from
PWM to skip-mode operation at light loads to reduce
operating current and extend battery life. The core out-
put can be forced into PWM mode at all loads to mini-
mize noise. A 2.6V to 5.5V input voltage range allows
1-cell lithium-ion (Li+), 3-cell NiMH, or a regulated 5V
input. The MAX8588 is available in a tiny 6mm x 6mm,
48-pin thin QFN package.
19-3527; Rev 0; 3/05
X-Scale is a trademark of Intel Corp.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PDA, Palmtop, and Wireless Handhelds
Third-Generation Smart Cell Phones
Internet Appliances and Web-Books
Dynamic Core for PDAs and Smartphones
________________________________________________________________ Maxim Integrated Products
General Description
High-Efficiency, Low-I
Applications
♦ Six Regulators in One Package
♦ Low Operating Current
♦ Optimized for X-Scale Processors
♦ Backup-Battery Input
♦ 1MHz PWM Switching Allows Small External
♦ Tiny 6mm x 6mm, 48-Pin Thin QFN Package
Pin Configuration appears at end of data sheet.
MAX8588ETM
Components
Step-Down DC-DC for I/O at 1.3A
Step-Down DC-DC for Memory at 0.9A
Step-Down Serial-Programmed DC-DC for CORE
Up to 0.5A
Three LDO Outputs for SRAM, PLL, and USIM
Always-On Output for VCC_BATT
60µA in Sleep Mode (Sleep LDOs On)
130µA with DC-DCs On (Core Off)
200µA All Regulators On, No Load
5µA Shutdown Current
PART
nBATT_FAULT
nVCC_FAULT
PWR_EN
MAIN BATTERY
SYS_EN
nRESET
BACKUP
BATTERY
-40°C to +85°C 48 Thin QFN (6mm x 6mm)
TEMP RANGE
IN
BKBT
MR
RSO
POK
DBO
ON1-2
ON3-6
Ordering Information
MAX8588
Simplified Diagram
Q
PMIC with
V1
V2
V3
V4
V5
V6
V7
www.DataSheet4U.com
PIN-PACKAGE
VCC_IO 3.3V
VCC_MEM 2.5V
VCC_CORE
0.8V TO 1.3V
VCC_PLL 1.3V
VCC_SRAM 1.1V
VCC_USIM
0V, 1.8V, 3.0V
VCC_BATT
Features
1
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