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High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smartphones

High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smartphones Using Intel XScale Microprocessors

Product Details

The MAX1586/MAX1587 power-management ICs are optimized for devices using Intel XScale® 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 a 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 and MAX1587A 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 PWM 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.

Key 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 XScale 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

Applications/Uses

  • Internet Appliances and Web-Books
  • PDA, Palmtop, and Wireless Handhelds
  • Third-Generation Smart Cell Phones
Parametric specs for Power Management ICs (PMICs)
VIN (V) (min) 2.6
VIN (V) (max) 5.5
# Step-Down Outputs 3
# LDO Outputs 4
VOUT (V) (min) 0.7
VOUT (V) (max) 5.5
Package/Pins TQFN/40
Budgetary
Price (See Notes)
$5.44 @1k
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Simplified Block Diagram

MAX1586A, MAX1586B, MAX1586C, MAX1587A, MAX1587C: Functional Diagram MAX1586A, MAX1586B, MAX1586C, MAX1587A, MAX1587C: Functional Diagram Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Additional Resources
More about Maxim technology for XScale PMICs

Description

The MAX1586A evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that evaluates the MAX1586A power-management IC (PMIC). The IC is optimized for microprocessor-based applications. The MAX1586A integrates three high-performance synchronous step-down DC-DC power supplies, three low-dropout (LDO) regulators, a battery backup supply, and various power-management functions.

The MAX1586A evaluation system (EV system) consists of a MAX1586A evaluation kit (EV kit) and a companion Maxim CMAXQUSB board.

The Maxim SMBus™ interface board (CMAXQUSB) allows a PC to use its USB port to emulate an SMBus/I²C-compatible 2-wire interface. Windows® 98SE/2000/XP-compatible software provides a professional interface to exercise the features of the MAX1586A. The program is menu driven and offers a graphical user interface (GUI) with control buttons and a status display.

The MAX1586AEVCMAXQU includes both the EV kit and the CMAXQUSB interface board. Order the MAX1586A EV kit if you already have an SMBus interface.

View Details

Features

  • 2.6V to 5.5V Single-Supply Operation
  • Seven-Output Power Supply
    • 3.3V at 1.3A (VCC_I/O)
    • 2.5V at 900mA (VCC_MEM)
    • 0.7 to 1.475V at 500mA (VCC_CORE) Software Adjustable
    • 1.3V at 35mA (VCC_PLL)
    • 1.1V at 40mA (VCC_SRAM)
    • 0 to 3V at 35mA (VCC_USIM) Software Adjustable
    • Backup Battery Supply (30mA)
  • 1MHz Switching Frequency
  • On-Board Manual Reset Switch
  • Optional On-Board Power-Sequencing Circuitry
  • Power-OK Output
  • SMBus/I²C-Compatible 2-Wire Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Software-Controlled Core and USIM Voltage Adjustment
  • Assembled and Tested
  • Include Windows 98SE/2000/XP-Compatible Software
  • Also Evaluate the MAX1586B
  • EV System Includes USB Connectivity

Description

The MAX1586A evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that evaluates the MAX1586A power-management IC (PMIC). The IC is optimized for microprocessor-based applications. The MAX1586A integrates three high-performance synchronous step-down DC-DC power supplies, three low-dropout (LDO) regulators, a battery backup supply, and various power-management functions.

The MAX1586A evaluation system (EV system) consists of a MAX1586A evaluation kit (EV kit) and a companion Maxim CMAXQUSB board.

The Maxim SMBus™ interface board (CMAXQUSB) allows a PC to use its USB port to emulate an SMBus/I²C-compatible 2-wire interface. Windows® 98SE/2000/XP-compatible software provides a professional interface to exercise the features of the MAX1586A. The program is menu driven and offers a graphical user interface (GUI) with control buttons and a status display.

The MAX1586AEVCMAXQU includes both the EV kit and the CMAXQUSB interface board. Order the MAX1586A EV kit if you already have an SMBus interface.

View Details

Features

  • 2.6V to 5.5V Single-Supply Operation
  • Seven-Output Power Supply
    • 3.3V at 1.3A (VCC_I/O)
    • 2.5V at 900mA (VCC_MEM)
    • 0.7 to 1.475V at 500mA (VCC_CORE) Software Adjustable
    • 1.3V at 35mA (VCC_PLL)
    • 1.1V at 40mA (VCC_SRAM)
    • 0 to 3V at 35mA (VCC_USIM) Software Adjustable
    • Backup Battery Supply (30mA)
  • 1MHz Switching Frequency
  • On-Board Manual Reset Switch
  • Optional On-Board Power-Sequencing Circuitry
  • Power-OK Output
  • SMBus/I²C-Compatible 2-Wire Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Software-Controlled Core and USIM Voltage Adjustment
  • Assembled and Tested
  • Include Windows 98SE/2000/XP-Compatible Software
  • Also Evaluate the MAX1586B
  • EV System Includes USB Connectivity

More about Maxim technology for XScale PMICs
/en/design/design-tools/ee-sim.html?

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for Power Management ICs (PMICs)
VIN (V) (min) 2.6
VIN (V) (max) 5.5
# Step-Down Outputs 3
# LDO Outputs 4
VOUT (V) (min) 0.7
VOUT (V) (max) 5.5
Package/Pins TQFN/40
Budgetary
Price (See Notes)
$5.44 @1k

Key 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 XScale 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

Applications/Uses

  • Internet Appliances and Web-Books
  • PDA, Palmtop, and Wireless Handhelds
  • Third-Generation Smart Cell Phones

Description

The MAX1586/MAX1587 power-management ICs are optimized for devices using Intel XScale® 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 a 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 and MAX1587A 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 PWM 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.

Simplified Block Diagram

MAX1586A, MAX1586B, MAX1586C, MAX1587A, MAX1587C: Functional Diagram MAX1586A, MAX1586B, MAX1586C, MAX1587A, MAX1587C: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.