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MAX1586BETM Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1586BETM Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 30 page General Description The MAX1586/MAX1587 power-management ICs are optimized for devices using Intel XScale® microproces- sors, including Smart Phones, PDAs, internet appli- ances, 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. Included are three step-down DC-DC outputs, three linear regulators, and a seventh always-on output. DC-DC converters power I/O, DRAM, and the CPU core. The I/O supply can be preset to 3.3V or adjusted to other values. The DRAM supply on the A and C devices 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 pro- grammed for dynamic voltage management and, on C devices, can supply up to 0.9A. Linear-regulated out- puts are provided 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 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. 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 0.9A 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 ♦ 1MHz PWM Switching Allows Small External Components ♦ Tiny 6mm x 6mm, 40-Pin and 7mm x 7mm, 48-Pin Thin QFN Packages High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones ________________________________________________________________ Maxim Integrated Products 1 Ordering Information MAX1586 MAX1587 V1 V2 V3 V4 V5 V6 V7 VCC_IO 3.3V VCC_MEM 2.5V VCC_CORE 0.8V TO 1.3V VCC_USIM 0V, 1.8V, 3.0V MAIN BATTERY VCC_PLL 1.3V VCC_SRAM 1.1V BACKUP BATTERY IN BKBT MR RSO VCC_BATT POK nRESET nVCC_FAULT SYS_EN PWR_EN ON1-2 ON3-6 nBATT_FAULT DBO Simplified Functional Diagram 19-3089; Rev 4; 4/09 EVALUATION KIT AVAILABLE Pin Configurations and Selector Guide appear at end of data sheet. PART TEMP RANGE PIN-PACKAGE MAX1586AETM -40°C to +85°C 48 Thin QFN 7mm x 7mm MAX1586BETM -40°C to +85°C 48 Thin QFN 7mm x 7mm MAX1586CETM -40°C to +85°C 48 Thin QFN 7mm x 7mm MAX1587AETL -40°C to +85°C 40 Thin QFN 6mm x 6mm MAX1587CETL -40°C to +85°C 40 Thin QFN 6mm x 6mm Intel XScale is a registered trademark of Intel Corp. Ordering Information PART TEMP RANGE PIN-PACKAGE MAX1586AETM -40°C to +85°C 48 Thin QFN 7mm x 7mm MAX1586BETM -40°C to +85°C 48 Thin QFN 7mm x 7mm MAX1586CETM -40°C to +85°C 48 Thin QFN 7mm x 7mm MAX1587AETL -40°C to +85°C 40 Thin QFN 6mm x 6mm MAX1587CETL -40°C to +85°C 40 Thin QFN 6mm x 6mm For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. |
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