MAX4271, MAX4272, MAX4273 3V至12V、限流型、热插拔控制器，带有自动重试以及DualSpeed/BiLevel故障保护

概述

The MAX4271/MAX4272/MAX4273 comprise a complete family of integrated 3V to 12V hot-swap controllers. They allow the safe insertion and removal of circuit cards into live backplanes.

The discharged filter capacitors of the circuit card provide a low impedance to the live backplane. High in-rush currents from the backplane to the circuit card can burn up connectors and components, or momentarily collapse the backplane power supply leading to a system reset. This family of hot-swap controllers prevents such problems by regulating the current to a preset limit when the board is plugged in, allowing the system to stabilize safely. After the startup cycle is completed, two on-chip comparators provide DualSpeed/BiLevel™ protection against short circuits, load glitches, and overcurrent conditions. In the event of a fault condition, the load is disconnected. Fault recovery is handled by unlatching (MAX4271), autoretry (MAX4272), or programmed (MAX4273) methods.

The MAX4271 family includes many integrated features that reduce component count and design time. An on-board charge pump provides the gate drive for a low-cost, external n-FET. Integrated features like startup current regulation and current glitch protection eliminate external timing resistors and capacitors. Also featured are an open-drain status output to indicate a fault condition, and an adjustable overcurrent response time.

The MAX4271 (latched fault protection) and MAX4272 (autoretry fault protection) come in 8-pin SO packages. The MAX4273 (full function) comes in the space-saving 16-pin QSOP package and 16-pin SO package. All parts are specified across the extended temperature range, and have an absolute maximum rating of 15V to provide extra protection against inductive kickback during board removal.

关键特性

应用/使用

Provide Safe Hot Swap for +3V to +12V Power Supplies with Few External Components
Unique Current Regulation Architecture Minimizes n-FET Linear Mode Duration
Autoretry Feature (MAX4272/MAX4273)
DualSpeed/BiLevel Current Limit Protects Against Current Glitches and Short Circuits
Power-On RESET (MAX4273)
15V Absolute Maximum Rating Protects Against Inductive Kickbacks During Board Removal
Internal Charge Pump Generates Gate Drive for External n-MOSFET
Status Output Pin Indicates Fault/Safe Condition
Space-Saving 8-Pin SO, 16-Pin QSOP Packages

	PBX
	RAID
	路由器/交换机
	路由器/交换机
	电信
	无线基站

Key Specifications: Hot Swap Controllers

Part Number

Min. V_IN (V)

Max. V_IN (V)

Low Voltage

High Voltage

Voltage Polarity

Type

Fault Condition Control

Number of Channels

Features

Package

Price^**

MAX4271

2.7

13.2

Yes

Positive

Positive, Low-Voltage

Latched Off

•	On/Off and STAT Control

•	Regulated, DualSpeed/BiLevel; inrush current and short circuit protection

SOIC/8

$1.95 @ 1k

MAX4272

Periodic retry

•	On/Off and STAT Control

•	Regulated, DualSpeed/BiLevel; inrush current and short circuit protection

SOIC/8

$2.04 @ 1k

MAX4273

Programmable latched off or periodic retry

•	On/Off, STAT, and POR Controls

•	Regulated, DualSpeed/BiLevel; inrush current and short circuit protection

QSOP/16
SOIC/16

$2.28 @ 1k

See All Hot Swap Controllers (45)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

可靠性报告


		查询FIT数据：

		可靠性报告： MAX4272ESA.pdf (English only)

		申请可靠性报告： (English only)

定购信息

注：

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型号尾缀：T或T&R = 卷带; + = RoHS/无铅; # = RoHS/无铅豁免权。详细信息请参考：完整的数据资料或型号命名规则。
* “封装代码/变更”提供产品使用的变更信息。注意：型号尾缀中的“+”、“#”和“-”表示器件的RoHS状况，封装图上可能显示不同的尾缀字符。

器件： 1-16 of 16

MAX4271

免费样品

采购

封装：	类型引脚占位面积
	封装图编码/变更 *

温度

RoHS/无铅？
材料分析

MAX4271ESA

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4271ESA+T

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4271ESA+

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4271ESA-T

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4272

免费样品

采购

封装：	类型引脚占位面积
	封装图编码/变更 *

温度

RoHS/无铅？
材料分析

MAX4272ESA+T

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4272ESA+

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4272ESA-T

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4272ESA

SOIC；8引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S8-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4273

免费样品

采购

封装：	类型引脚占位面积
	封装图编码/变更 *

温度

RoHS/无铅？
材料分析

MAX4273EEE-T

QSOP；16引脚；
封装图： 21-0055 (PDF)
使用封装码/变更：E16-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4273EEE

QSOP；16引脚；
封装图： 21-0055 (PDF)
使用封装码/变更：E16-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4273EEE+

QSOP；16引脚；
封装图： 21-0055 (PDF)
使用封装码/变更：E16+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4273EEE+T

QSOP；16引脚；
封装图： 21-0055 (PDF)
使用封装码/变更：E16+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4273ESE-T

SOIC；16引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S16-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4273ESE

SOIC；16引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S16-5*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX4273ESE+

SOIC；16引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S16+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX4273ESE+T

SOIC；16引脚；
封装图： 21-0041 (PDF)
使用封装码/变更：S16+5*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

更多信息

新品发布 2000-08-04 (English only) 2000-07-12 (English only)

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