Datasheet > CM3503

CM3503

更新时间： 2024-11-08 23:14:31

品牌	Logo	应用领域
CALMIRCO		开关
页数	文件大小	规格书
6页	218K
描述
USB 5V Single 1.4A Overcurrent Switch

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

CM3503 数据手册

PRELIMINARY

CM3503

CALIFORNIA MICRO DEVICES

USB 5V Single 1.4A Overcurrent Switch

Features

Pin Diagram

•

High-side high current switch with active low Enable

Very low on-resistance switch (0.07? typ.)

Up to 1.4A continuous current on the output

Over-current limits at 1.4A min

10msec min fault blanking delay on OC# output

prevents false overcurrent alarms

GND

V_CC

V_OUT

OC#

•

Prevents backdrive current when host powered off

Low operating current (95µA typ.)

Low quiescent current when disabled (<1µA max)

Small 8-Lead SOIC package

V_CC

EN#

Applications

SOIC-8

•

2 USB ports 5V supply overcurrent protection

Product Description

Typical Application Circuit

California Micro Devices’ CM3503 is a USB

overcurrent power switch that provides power to two

USB ports. The device has a very low on-resistance

power switch that provides the V_BUSvoltage at the

USB output ports with minimal voltage drop. When

the EN# pin is logic low, the power switch is ON,

and V_CCis connected to the output V_OUT. When the

EN# pin is logic high, the power switch is OFF, and

no power is available at the output.

GND

V_OUT

OC#

V_BUS

V_CC

1 USB Port

V_CC

V_BUS

EN#

The power switch has full over-current protection.

Whenever the current limit of the switch is

exceeded, the device enters a constant-current

mode, where the output voltage is progressively

reduced to prevent the current from increasing

further. The OC# output becomes active low only if

the overcurrent condition exceeds at least 10ms.

This fault blanking delay prevents false alarms from

being reported to the host USB controller.

Simplified Electrical Schematic

If the overcurrent condition is severe enough that

the part heats up to the thermal limit T_MAX, then the

switch will be turned off and the temperature cools

down. At T_MINthe switch then turns on again, and

the device heats up again, and so on, until the fault

is removed.

EN#

V_CC

Over

current

protect

V_OUT

OC#

The CM3503 also prevents backdrive current

flowing into the host from the connected peripheral.

This can occur when V_CCis removed as the host

powers down, and the peripheral still has normal

power applied. The 5V from the peripheral can

therefore be linked to the host’s V_BUS, potentially

causing backdrive current into the host and

overloading the peripheral power supply.

C0970500

09/10/03

430 N. McCarthy Blvd, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

12 3 4 5 6

中文翻译

下载PDF

与CM3503相关器件

型号	品牌	获取价格	描述	数据表
CM3503-02SN	CALMIRCO	获取价格	USB 5V Single 1.4A Overcurrent Switch
CM3504	PANJIT	获取价格	HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Ampere
CM3504	TRSYS	获取价格	HIGH CURRENT SILICON BRIDGE RECTIFIERS
CM3-504	VCC	获取价格	Wedge Base
CM3-505	VCC	获取价格	Wedge Base
CM3506	PANJIT	获取价格	HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Ampere
CM3506	TRSYS	获取价格	HIGH CURRENT SILICON BRIDGE RECTIFIERS
CM3-507	VCC	获取价格	Wedge Base
CM3508	PANJIT	获取价格	HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Ampere
CM3508	TRSYS	获取价格	HIGH CURRENT SILICON BRIDGE RECTIFIERS

与CM3503相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

22
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

21
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

47
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

39

产品中心

服务支持

精选活动

关于我们

帮助中心

CM3503

CM3503 数据手册

与CM3503相关器件

与CM3503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

CM3503

CM3503 数据手册

与CM3503相关器件

与CM3503相关文章

您还可以找

您在本页遇到什么问题？