Datasheet > MAX4970

MAX4970

更新时间： 2024-09-15 11:16:43

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
9页	160K
描述
Overvoltage-Protection Controllers with a Low RON Internal FET

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MAX4970 数据手册

19-4139; Rev 1; 8/08

Overvoltage-Protection Controllers

with a Low R Internal FET

01/MAX4972

General Description

Features

The MAX4970/MAX4971/MAX4972 family of overvolt-

♦ Input Voltage Protection up to +28V

♦ Integrated nFET Switch

age protection devices features a low 40mΩ (typ) R

internal FET and protect low-voltage systems against

voltage faults up to +28V. These devices also drive an

optional external pFET to protect against reverse-polari-

ty input voltages. When the input voltage exceeds the

overvoltage threshold, the internal FET is turned off to

prevent damage to the protected components.

♦ Reverse Voltage Protection with External pFET

♦ Enable Input

♦ Preset Overvoltage Protection Trip Level

5.8V (MAX4970)

6.35V (MAX4971)

4.65V (MAX4972)

All switches feature a 2.3A (min) current-limit protec-

tion. During a short-circuit occurrence, the device oper-

ates in an autoretry mode where the internal MOSFET is

turned on to check if the fault has been removed. The

autoretry interval time is 15ms, and if the fault is

removed, the MOSFET remains on.

♦ Low-Current Undervoltage-Lockout Mode

♦ Short-Circuit Protection (Autoretry)

♦ Internal 15ms Startup Delay and Retry Times

♦ Input-Voltage Power-Good Logic Output

♦ Thermal-Shutdown Protection

The MAX4970/MAX4971/MAX4972 feature an enable

input (EN) that controls the operation of the internal

nFET as well as the optional external pFET. The use of

EN allows the external pFET to block reverse voltages

independent of any signal present at the output.

♦ 2mm x 1.5mm, 12-Bump WLP Package

Pin Configuration

The overvoltage thresholds (OVLO) are preset to

4.65V (MAX4972), 5.8V (MAX4970), or 6.35V (MAX4971).

The undervoltage thresholds (UVLO) are preset to 2.45V.

When the input voltage drops below the UVLO, the

devices enter a low-current standby mode.

TOP VIEW (BUMPS ON BOTTOM)

MAX4970/MAX4971/MAX4972

All devices are offered in a small 12-bump, WLP pack-

age and operate over the -40°C to +85°C extended

temperature range.

ACOK

GND

OUT

Applications

Cell Phones

Digital Still Cameras

PDAs and Palmtop Devices

MP3 Players

WLP

Ordering Information/Selector Guide

PART

PIN-PACKAGE

12 WLP

TOP MARK

AAA

PACKAGE CODE

W121A2+1

UVLO (V)

2.45

OVLO (V)

5.8

ACOK ACTION

UVLO only

MAX4970EWC+T

MAX4971EWC+T

MAX4972EWC+T

12 WLP

AAB

W121A2+1

2.45

6.35

UVLO only

12 WLP

AAC

W121A2+1

2.45

4.65

UVLO and OVLO

Note: All devices are specified over the -40°C to +85°C operating temperature range.

+Denotes a lead-free/RoHS-compliant package.

T = Tape-and-reel package.

Typical Operating Circuit appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...9

中文翻译

下载PDF

与MAX4970相关器件

型号	品牌	获取价格	描述	数据表
MAX4970EWC	MAXIM	获取价格	Overvoltage-Protection Controllers with a Low RON Internal FET
MAX4970EWC+	MAXIM	获取价格	Surge Protection Circuit,
MAX4971EBC+T	MAXIM	获取价格	Surge Protection Circuit
MAX4971EWC	MAXIM	获取价格	Overvoltage-Protection Controllers with a Low RON Internal FET
MAX4971EWC+	MAXIM	获取价格	Surge Protection Circuit,
MAX4971EWC+T	MAXIM	获取价格	Surge Protection Circuit, BICMOS, PBGA12, 2 X 1.50 MM, ROHS COMPLIANT, WLP-12
MAX4972EBC+T	MAXIM	获取价格	Surge Protection Circuit
MAX4972EWC	MAXIM	获取价格	Overvoltage-Protection Controllers with a Low RON Internal FET
MAX4972EWC+	MAXIM	获取价格	Surge Protection Circuit,
MAX4972EWC+T	MAXIM	获取价格	Surge Protection Circuit, BICMOS, PBGA12, 2 X 1.50 MM, ROHS COMPLIANT, WLP-12

与MAX4970相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

3
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

3
SL74HC10N：高性能三输入与非门解析
2024-09-03

83
AIC1781A 电池充电控制器深度解析
2024-09-03

75

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX4970

MAX4970 数据手册

与MAX4970相关器件

与MAX4970相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX4970

MAX4970 数据手册

与MAX4970相关器件

与MAX4970相关文章

您还可以找

您在本页遇到什么问题？