Datasheet > MAX1586A|MAX1586B|MAX1587A

MAX1586A|MAX1586B|MAX1587A

更新时间： 2024-11-05 23:45:47

品牌	Logo	应用领域
美信 - MAXIM		集成电源管理电路光电二极管电话
页数	文件大小	规格书
32页	647K
描述
High-Efficiency. Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones

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19-3089; Rev 1; 12/03

High-Efficiency, Low-I PMICs with

Dynamic Core for PDAs and Smart Phones

General Description

Features

The MAX1586/MAX1587 power-management ICs are

optimized for devices using Intel X-Scale™ micro-

processors, including third-generation smart cell

phones, PDAs, internet appliances, and other portable

devices requiring substantial computing and multime-

dia capability at low power.

♦ 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

The ICs integrate seven high-performance, low-operating-

current power supplies along with supervisory and man-

agement 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 val-

ues.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 volt-

age management. Linear-regulated outputs are provided

for SRAM, PLL, and USIM supplies.

♦ 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

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 con-

trol for all DC-DC converters, low-battery and dead-bat-

tery detection, a reset and power-OK output, a backup-

battery input, and a two-wire serial interface.

Thin QFN Packages

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

MAX1587AETL -40°C to +85°C 40 Thin QFN 6mm x 6mm

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 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 avail-

able 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 Functional Diagram

MAIN BATTERY

IN MAX1586

MAX1587

BACKUP

BATTERY

VCC_IO 3.3V

BKBT

VCC_MEM 2.5V

VCC_CORE

0.8V TO 1.3V

Applications

PDA, Palmtop, and Wireless Handhelds

Third-Generation Smart Cell Phones

Internet Appliances and Web-Books

VCC_PLL 1.3V

RSO

nRESET

nVCC_FAULT

nBATT_FAULT

SYS_EN

POK

DBO

VCC_SRAM 1.1V

VCC_USIM

0V, 1.8V, 3.0V

ON1-2

ON3-6

Pin Configurations appear at end of data sheet.

PWR_EN

VCC_BATT

X-Scale is a trademark of Intel Corp.

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...32

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与MAX1586A|MAX1586B|MAX1587A相关器件

型号	品牌	获取价格	描述	数据表
MAX1586AETM	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586AETM+	MAXIM	获取价格	暂无描述
MAX1586AETM+T	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, 7 X 7 MM, 0.80 MM HEIGHT, MO-
MAX1586AEVCMAXQU	MAXIM	获取价格	2.6V to 5.5V Single-Supply Operation
MAX1586AEVKIT	MAXIM	获取价格	2.6V to 5.5V Single-Supply Operation
MAX1586AEVKIT\|MAX1586AEVSYS	MAXIM	获取价格	Evaluation System/Evaluation Kit for the MAX1586A
MAX1586B	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586B	ADI	获取价格	高效率、低IQ PMIC，带有动态内核，用于PDA和智能电话
MAX1586BETM	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586BETM+	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, 7 X 7 MM, 0.80 MM HEIGHT, MO-

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