MAX1812

更新时间： 2024-09-12 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		开关
页数	文件大小	规格书
10页	297K
描述
Dual USB Switch with Fault Blanking

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数据手册

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MAX1812 数据手册

19-1865; Rev 0; 11/00

Dual USB Switch with Fault Blanking

General Description

Features

ꢀ Dual USB Switch in Tiny 10-Pin µMAX Package

ꢀ Guaranteed 500mA Load per Channel

ꢀ Built-In 20ms Fault Blanking

The MAX1812 is a dual current-limited switch specifi-

cally made for USB applications. Each channel is guar-

anteed to supply 500mA and meets USB specifications.

The MAX1812’s low quiescent supply current (45µA)

and shutdown current (3µA) conserve battery power in

portable applications.

ꢀ Compliant to USB Specifications

ꢀ +4.0V to +5.5V Input Voltage Range

ꢀ 45µA Quiescent Current

The MAX1812 has multiple safety features to ensure

that the USB port is protected. Built-in thermal-overload

protection limits power dissipation and junction temper-

ature. The device also has accurate internal current-lim-

iting circuitry to protect the input supply against both

overload and short-circuit conditions. Independent fault

signals (FAULTA and FAULTB) notify the microproces-

sor when a thermal-overload, current limit, undervoltage

lockout, or short-circuit fault occurs. A 20ms fault-blank-

ing feature enables the circuit to ignore momentary

faults, such as those caused when hot-swapping a

capacitive load, thereby preventing false alarms to the

host system.

ꢀ 3µA Shutdown Current

ꢀ Independent Shutdown Control

ꢀ Independent FAULT Indicator Outputs

ꢀ Thermal-Overload Protection

ꢀ UL Listing Pending

The MAX1812 is available in a space-saving 10-pin

µMAX package. For single versions of this device, refer

to the MAX1693, MAX1694, and MAX1607 data sheets.

________________________Applications

Ordering Information

USB Ports

PART

TEMP. RANGE

PIN-PACKAGE

USB Hubs

MAX1812EUB

-40 C to +85 C

10 MAX

Notebook Computers

Desktop Computers

PDAs and Palmtop Computers

Docking Stations

Typical Operating Circuit

Pin Configuration

TOP VIEW

USB

PORT A

INA

OUTA

INPUT

4.0V TO 5.5V

INB

ONA

INA

10 FAULTA

OUTA

GND

MAX1812

USB

PORT B

FAULTA

FAULTB

OUTB

INB

ONB

OUTB

FAULTB

ONA

ONB

ONA

ONB

MAX

GND

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...10

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与MAX1812相关器件

型号	品牌	获取价格	描述	数据表
MAX1812EUB	MAXIM	获取价格	Dual USB Switch with Fault Blanking
MAX1812EUB+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PDSO10, MICRO MAX PACKAGE-10
MAX1812EUB+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PDSO10, MICRO MAX PACKAGE-10
MAX1812EUBT	MAXIM	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10, MICRO MAX PACKAGE-10
MAX1813	MAXIM	获取价格	Dynamically-Adjustable, Synchronous Step-Down Controller with Integrated Voltage Positioni
MAX1813	ADI	获取价格	动态可调、同步降压型控制器，集成电压定位电路
MAX1813EEI	MAXIM	获取价格	Dynamically-Adjustable, Synchronous Step-Down Controller with Integrated Voltage Positioni
MAX1813EEI+	MAXIM	获取价格	暂无描述
MAX1813EEI+T	MAXIM	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1813EEI-T	MAXIM	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025

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