MAX1585

更新时间： 2024-11-05 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
29页	629K
描述
5-Channel Slim DSC Power Supplies

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MAX1585 数据手册

19-2883; Rev 0; 7/03

5-Channel Slim DSC Power Supplies

General Description

Features

The MAX1584/MAX1585 provide a complete power-

supply solution for slim digital cameras. They improve

performance, component count, and size compared to

conventional multichannel controllers in 2-cell AA, 1-cell

Li+, and dual-battery designs. On-chip MOSFETs pro-

vide up to 95% efficiency for critical power supplies,

while additional channels operate with external FETs for

optimum design flexibility. This optimizes overall effi-

ciency and cost, while also reducing board space.

ꢀ Step-Up DC-DC Converter, 95% Efficient

ꢀ Step-Down DC-DC Converter

Operate from Battery for 95% Efficient

Step-Down

90% Efficient Boost-Buck with Step-Up

ꢀ Three Auxiliary PWM DC-DC Controllers

ꢀ No Transformers (MAX1585)

ꢀ Up to 1MHz Operating Frequency

ꢀ 1mA Shutdown Mode

The MAX1584/MAX1585 include 5 high-efficiency DC-

DC conversion channels:

• Step-up DC-DC converter with on-chip FETs

• Step-down DC-DC converter with on-chip FETs

ꢀ Internal Soft-Start Control

ꢀ Overload Protection

• Three PWM DC-DC controllers for CCD, LCD, LED,

or other functions

ꢀ Compact 32-Pin Thin QFN Package (5mm x 5mm)

The step-down DC-DC converter can operate directly

from the battery or from the step-up output, providing

boost-buck capability with a compound efficiency of up

to 90%. Both devices include three PWM DC-DC con-

trollers: the MAX1584 includes two step-up controllers

and one step-down controller, while the MAX1585

includes one step-up controller, one inverting controller,

and one step-down controller. All DC-DC channels

operate at one fixed frequency—settable from 100kHz

to 1MHz—to optimize size, cost, and efficiency. Other

features include soft-start, power-OK outputs, and over-

load protection. The MAX1584/MAX1585 are available

in space-saving, 32-pin thin QFN packages. An evalua-

tion kit is available to expedite designs.

Ordering Information

PIN-

PACKAGE

AUX

FUNCTIONS

PART

TEMP RANGE

32 Thin QFN

5mm x 5mm

2 step-up

1 step-down

MAX1584ETJ -40°C to +85°C

MAX1585ETJ -40°C to +85°C

1 step-up

1 step-down

1 inverting

32 Thin QFN

5mm x 5mm

Pin Configuration

Applications

Digital Cameras

PDAs

32 31 30 29 28 27 26 25

24 CC2

23 FB2

CC1

FB1

Typical Operating Circuit

22 PVSU

21 LXSU

20 PGSU

19 OSC

18 SCF

17 SDOK

PGSD

LXSD

PVSD

ONSD

CCSD

FBSD

MAX1584

MAX1585

INPUT

0.7V TO 5.5V

MAX1585

STEP-UP

SYSTEM +5V

CORE +1.8V

STEP-DOWN

AUX1

LCD, CCD, LED +15V

CCD -7.5V

ONSU

ONSD

ON1

10 11 12 13 14 15 16

AUX2

AUX3

LOGIC +3.3V

ON2

ON3

THIN QFN

5mm x 5mm

________________________________________________________________ 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.

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与MAX1585相关器件

型号	品牌	获取价格	描述	数据表
MAX1585ETJ	MAXIM	获取价格	5-Channel Slim DSC Power Supplies
MAX1585ETJ-T	MAXIM	获取价格	Switching Controller, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.
MAX1586	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586A	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586A	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
MAX1586A_08	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586A_09	MAXIM	获取价格	High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
MAX1586A\|MAX1586B\|MAX1587A	MAXIM	获取价格	High-Efficiency. Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones
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

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