MAX8544

更新时间： 2024-11-27 22:55:11

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
27页	400K
描述
Step-Down Controllers with Prebias Startup, Lossless Sensing, Synchronization, and OVP

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数据手册

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MAX8544 数据手册

19-3155; Rev 0; 5/04

S t e p -Do w n Co n t ro lle rs w it h P re b ia s S t a rt u p ,

Lo s s le s s S e n s in g , S yn c h ro n iza t io n , a n d OVP

Ge n e ra l De s c rip t io n

Fe a t u re s

The MAX8543/MAX8544 current-mode, constant-fre-

quency PWM buck controllers operate from a 3V to

13.2V input supply and generate adjustable 0.8V to 0.9

♦ Prebias Startup/Monotonic

♦ 1% Output Accuracy

x V output voltages at loads up to 25A. They feature

adjustable switching frequency and synchronization for

noise-sensitive applications.

♦ Ceramic, Polymer, or Electrolytic Capacitors

♦ 200kHz to 1MHz Adjustable Frequency

♦ 160kHz to 1.2MHz Synchronization

♦ Lossless, Foldback Current Limit

♦ Overvoltage Protection

The MAX8543/MAX8544 can start with (or without) a pre-

existing bias on the output, without discharging the out-

put. This feature simplifies tracking supply designs for

core and I/O applications and redundant supply designs.

The MAX8543/MAX8544 use the DC resistance of the

output inductor as the current-sense element for loss-

le s s , low-c os t c urre nt s e ns ing . The c urre nt-s e ns e

threshold can be set to four discrete levels to accom-

modate inductors with different DC resistance values.

♦ Enable (On/Off)

♦ Adjustable Soft-Start

♦ MAX8544

Latch-Off/Autorecovery

Power-OK Monitor

Out-of-Phase Clock Output

The MAX8544 features a power-OK monitor and two

MAX8544 controllers that can operate at 180° out-of-

phase for dual-output applications.

Ord e rin g In fo rm a t io n

Ap p lic a t io n s

Base Stations

Networks and Telecom

Storage

PART

MAX8543EEE

MAX8544EEP

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

16 QSOP

20 QSOP

Servers

Pin Configurations appear at end of data sheet.

Typ ic a l Op e ra t in g Circ u it

INPUT 3V TO 13.2V

= 3V

TO 5.5V

OFF

FSYNC

BST

OPTIONAL

SYNCHRONIZATION

OUTPUT

0.8V TO 0.9 x V

UP TO 25A

MAX8543

COMP

ILIM

CS+

GND

PGND

CS-

POK (MAX8544)

________________________________________________________________ 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...27

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与MAX8544相关器件

型号	品牌	获取价格	描述	数据表
MAX8544EEP	MAXIM	获取价格	Step-Down Controllers with Prebias Startup, Lossless Sensing, Synchronization, and OVP
MAX8544EEP+	MAXIM	获取价格	Switching Controller, Current-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO20, 0.150 INCH
MAX8544EEP+T	MAXIM	获取价格	Switching Controller, Current-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO20, 0.150 INCH
MAX8544EEP-T	MAXIM	获取价格	Switching Controller, Current-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO20, 0.150 INCH
MAX8545	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8545	ADI	获取价格	低成本、宽输入范围、降压型控制器，带有折返式限流
MAX8545_07	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8545\|MAX8546\|MAX8548	MAXIM	获取价格	Low-Cost. Wide Input Range. Step-Down Controllers with Foldback Current Limit
MAX8545EUB	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit
MAX8545EUB+	MAXIM	获取价格	Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit

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