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CM3503-02SN PDF预览

CM3503-02SN

更新时间： 2024-09-15 23:14:31
品牌 Logo 应用领域
CALMIRCO 电源电路开关电源管理电路光电二极管
页数 文件大小 规格书
6页 218K
描述
USB 5V Single 1.4A Overcurrent Switch

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中文翻译

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CM3503-02SN 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP,
针数：8Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.92Is Samacsys：N
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G8长度：4.9 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：225认证状态：Not Qualified
座面最大高度：1.75 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.9 mmBase Number Matches：1

CM3503-02SN 数据手册

 浏览型号CM3503-02SN的Datasheet PDF文件第2页浏览型号CM3503-02SN的Datasheet PDF文件第3页浏览型号CM3503-02SN的Datasheet PDF文件第4页浏览型号CM3503-02SN的Datasheet PDF文件第5页浏览型号CM3503-02SN的Datasheet PDF文件第6页 
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  
VCC  
VOUT  
VOUT  
VOUT  
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  
VCC  
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 VBUS voltage at the  
USB output ports with minimal voltage drop. When  
the EN# pin is logic low, the power switch is ON,  
and VCC is connected to the output VOUT. When the  
EN# pin is logic high, the power switch is OFF, and  
no power is available at the output.  
GND  
VOUT  
VOUT  
VOUT  
OC#  
VBUS  
VCC  
VCC  
1 USB Port  
1 USB Port  
VCC  
VBUS  
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 TMAX, then the  
switch will be turned off and the temperature cools  
down. At TMIN the switch then turns on again, and  
the device heats up again, and so on, until the fault  
is removed.  
EN#  
VCC  
Over  
current  
protect  
VOUT  
OC#  
The CM3503 also prevents backdrive current  
flowing into the host from the connected peripheral.  
This can occur when VCC is 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 VBUS, potentially  
causing backdrive current into the host and  
overloading the peripheral power supply.  
© 2003 California Micro Devices Corp. All rights reserved.  
C0970500  
09/10/03  
430 N. McCarthy Blvd, Milpitas, California 95035  
Tel: (408) 263-3214  
Fax: (408) 263-7846  
www.calmicro.com  
1
123456

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