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Part Number: MAX1586A
Description: The MAX1586/MAX1587 power-management ICs are optimized for devices using Intel X-Scale™ micropro...
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MAX1586A
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General Description
MAX1586A General Description
The MAX1586/MAX1587 power-management ICs are optimized for devices using Intel X-Scale™ microprocessors, including third-generation smart cell phones, PDAs, internet appliances, and other portable devices requiring substantial computing and multimedia capability at low power.
The ICs integrate seven high-performance, low-operating current power supplies along with supervisory and management functions. Regulator outputs include three step- down DC-DC outputs, three linear regulators, and seventh always-on output. DC-DC converter outputs power I/O, DRAM, and the CPU core. The I/O supply can be preset to 3.3V or 3.0V, or can be adjusted to other values.The DRAM supply on the MAX1586A andMAX1587A is preset for 1.8V or 2.5V, while the MAX1586B DRAM supply is preset for 3.3V or 2.5V. The DRAM supply on all parts can also be adjusted with external resistors. The CPU core supply is serial programmed for dynamic voltage management. Linear-regulated outputs are provided for SRAM, PLL, and USIM supplies.
To minimize sleep-state quiescent current, critical power supplies have bypass "sleep" LDOs that can be activated to minimize battery drain when output current is very low. Other functions include separate on/off control for all DC-DC converters, low-battery 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-frequency PWM control and automatically switch from to skip-mode operation at light loads to reduce operating current and extend battery life. The core output is capable of operating in forced-PWM mode at all loads to minimize ripple and 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 MAX1587 is available in a tiny 6mm x 6mm, 40-pin thin QFN package. The MAX1586 features an additional linear regulator (V6) for VCC_USIM and low-battery and dead- battery comparators. The MAX1586 is available in a 7mm x 7mm, 48-pin thin QFN package.
MAX1586A Maximum Ratings
IN, IN45, IN6, MR , LBO , DBO , RSO , POK, SCL, SDA,
BKBT, V7, SLP , SRAD, PWM3 to GND........................-0.3V to +6V
REF, CC_, ON_, FB_, DBI, LBI, V1, V2, RAMP, BYP,
MR to GND ..................................................-0.3V to (VIN+ 0.3V)
PV1, PV2, PV3, SLPIN to IN...................................-0.3V to +0.3V
V4, V5 to GND..........................................-0.3V to (VIN45 + 0.3V)
V6 to GND..................................................-0.3V to (VIN6 + 0.3V)
PV1 to PG1............................................................-0.3V to +6.0V
PV2 to PG2............................................................-0.3V to +6.0V
PV3 to PG3............................................................-0.3V to +6.0V
LX1 Continuous Current....................................-1.30A to +1.30A
LX2 Continuous Current........................................-0.9A to +0.9A
LX3 Continuous Current........................................-0.5A to +0.5A
PG1, PG2, PG3 to GND...........................................-0.3V to +0.3V
V1, V2, V4, V5, V6 Output Short-Circuit Duration........Continuous
Continuous Power Dissipation (TA = +70°C)
6mm x 6mm 40-Pin Thin QFN
(derate 26.3mW/°C above +70°C)................................2105mW
7mm x 7mm 48-Pin Thin QFN
(derate 26.3mW/°C above +70°C)................................2105mW
Operating Temperature Range............................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
MAX1586A 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
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
Separate ON Controls for Any Desired Power
Sequencing
1MHz PWM Switching Allows Small External
Components
Tiny 6mm x 6mm, 40-Pin and 7mm x 7mm, 48-Pin
Thin QFN Packages
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
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
Separate ON Controls for Any Desired Power
Sequencing
1MHz PWM Switching Allows Small External
Components
Tiny 6mm x 6mm, 40-Pin and 7mm x 7mm, 48-Pin
Thin QFN Packages
MAX1586A Typical Application
PDA, Palmtop, and Wireless Handhelds
Third-Generation Smart Cell Phones
Internet Appliances and Web-Books
Third-Generation Smart Cell Phones
Internet Appliances and Web-Books
MAX1586A Connection Diagram
MAX1586A
PDF/DataSheet Download
- Datasheet: MAX1586A
- File Size: 669438 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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