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PDF MAX8588 Data sheet ( Hoja de datos )
| Número de pieza | MAX8588 | |
| Descripción | High-Efficiency Low-IQ PMIC | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX8588 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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19-3527; Rev 0; 3/05
www.DataSheet4U.com
High-Efficiency, Low-IQ PMIC with
Dynamic Core for PDAs and Smartphones
General Description
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.
Applications
PDA, Palmtop, and Wireless Handhelds
Third-Generation Smart Cell Phones
Internet Appliances and Web-Books
Features
♦ Six Regulators in One Package
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
♦ Low Operating Current
60µA in Sleep Mode (Sleep LDOs On)
130µA with DC-DCs On (Core Off)
200µA All Regulators On, No Load
5µA Shutdown Current
♦ Optimized for X-Scale Processors
♦ Backup-Battery Input
♦ 1MHz PWM Switching Allows Small External
Components
♦ Tiny 6mm x 6mm, 48-Pin Thin QFN Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX8588ETM -40°C to +85°C 48 Thin QFN (6mm x 6mm)
Pin Configuration appears at end of data sheet.
Simplified Diagram
MAIN BATTERY
IN
MAX8588
BACKUP
BATTERY
BKBT
V1
V2
nRESET
nVCC_FAULT
nBATT_FAULT
SYS_EN
PWR_EN
MR
RSO
POK
DBO
ON1-2
ON3-6
V3
V4
V5
V6
V7
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
X-Scale is a trademark of Intel Corp.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
www.DataSheet4U.com
High-Efficiency, Low-IQ PMIC with
Dynamic Core for PDAs and Smartphones
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3.6V, VBKBT = 3.0V, VLBI = 1.1V, VDBI = 1.35V, circuit of Figure 5, TA = 0°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C.)
PARAMETER
LBI Threshold (Falling)
DBI Threshold (Falling)
RSO Threshold (Falling)
RSO Deassert Delay
LBI Input Bias Current
DBI Input Bias Current
Thermal-Shutdown Temperature
Thermal-Shutdown Hysteresis
LOGIC INPUTS AND OUTPUTS
LBO, DBO, POK, RSO, SDA Output
Low Level
LBO, DBO, POK, RSO Output Low
Level
LBO, DBO, POK, RSO Output-High
Leakage Current
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input High Level
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input Low Level
CONDITIONS
Hysteresis is 5% (typ)
LBI = IN (for preset)
With resistors at LBI
Hysteresis is 5% (typ)
DBI = IN (for preset)
With resistors at LBI
Voltage on REG7, hysteresis is 5% (typ)
TJ rising
2.6V ≤ V7 ≤ 5.5V, sinking 1mA
V7 = 1V, sinking 100µA
Pin = 5.5V
2.6V ≤ VIN ≤ 5.5V
2.6V ≤ VIN ≤ 5.5V
MIN
3.51
0.98
3.024
1.208
2.25
61
-50
TYP
3.6
1.00
3.15
1.232
2.41
65.5
-5
15
+160
15
MAX
3.69
1.02
3.276
1.256
2.56
70
50
UNITS
V
V
V
ms
nA
nA
°C
°C
0.4 V
0.4 V
0.2 µA
1.6 V
0.4 V
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input Leakage Current
Pin = GND, 5.5V
-1 +1 µA
SERIAL INTERFACE
Clock Frequency
400 kHz
Bus Free Time Between START and
STOP
1.3 µs
Hold Time Repeated START Condition
CLK Low Period
CLK High Period
Setup Time Repeated START Condition
DATA Hold Time
DATA Setup Time
0.6 µs
1.3 µs
0.6 µs
0.6 µs
0 µs
100 ns
Maximum Pulse Width of Spikes that
Must be Suppressed by the Input
Filter of Both DATA and CLK Signals
50 ns
Setup Time for STOP Condition
0.6 µs
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
High-Efficiency, Low-IQ PMIC with
Dynamic Core for PDAs and Smartphones
Typical Operating Characteristics (continued)
(Circuit of Figure 6, VIN = 3.6V, TA = +25°C, unless otherwise noted.)
DROPOUT VOLTAGE
vs. LOAD CURRENT
300
250
200
150
100 REG1 3.3V OUTPUT
50
0
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
SWITCHING FREQUENCY
vs. SUPPLY VOLTAGE
1040
TA = +85°C
1000
960
TA = +25°C
TA = -40°C
920
880
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
REG1 SWITCHING WAVEFORMS
WITH 800mA LOAD
MAX8588 toc12
V1
10mv/div
AC-COUPLED
VLX1
2V/div
0
IL1 500mA/div
400ns/div
0
CHANGE IN OUTPUT VOLTAGE
vs. LOAD CURRENT
200
150
100
REG1 3.3V OUTPUT
50 REG2 2.5V OUTPUT
REG3 1.3V OUTPUT
0
-50
VIN = 3.6V
-100
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
1.265
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.225
-40
REFERENCE VOLTAGE
vs. TEMPERATURE
-15 10 35 60
TEMPERATURE (°C)
85
REG1 SWITCHING WAVEFORMS
WITH 10mA LOAD
MAX8588 toc13
50mv/div
V1 AC-COUPLED
VLX1
2V/div
0
500mA/div
IL1
0
20µs/div
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX8588.PDF ] | |
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