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MAX1562|MAX1562H|MAX1563

更新时间： 2024-11-15 23:45:47
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Programmable. 4A. USB. Current-Limited Switches with Autoreset and Fault Blanking

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MAX1562|MAX1562H|MAX1563 数据手册

 浏览型号MAX1562|MAX1562H|MAX1563的Datasheet PDF文件第2页浏览型号MAX1562|MAX1562H|MAX1563的Datasheet PDF文件第3页浏览型号MAX1562|MAX1562H|MAX1563的Datasheet PDF文件第4页浏览型号MAX1562|MAX1562H|MAX1563的Datasheet PDF文件第5页浏览型号MAX1562|MAX1562H|MAX1563的Datasheet PDF文件第6页浏览型号MAX1562|MAX1562H|MAX1563的Datasheet PDF文件第7页 
19-2631; Rev 0; 7/03  
Programmable 4A USB Current-Limited  
Switches with Autoreset and Fault Blanking  
General Description  
Features  
The MAX1562/MAX1562H/MAX1563 single current-  
limited switches provide up to 4A to power up to eight  
USB ports. They operate from a 4V to 5.5V input  
supply and consume only 40µA of quiescent current  
when operating and only 3µA in shutdown.  
ꢀ Programmable Current Limit (1A to 4A) with  
Resistor  
ꢀ Autoreset Feature Saves System Power  
ꢀ 20ms Fault-Blanking Circuitry  
ꢀ Active-High/Low Control Logic  
ꢀ Fault-Indicator Output  
The MAX1562/MAX1562H/MAX1563s’ autoreset feature  
latches the switch off if the output is shorted, thereby  
saving system power. When the short is removed, the  
switch is reactivated. A fault-blanking feature enables the  
circuit to ignore momentary faults, such as those caused  
when hot swapping a capacitive load, preventing false  
alarms to the host system. Fault blanking also prevents  
fault signals from being issued when the device powers  
up the load.  
ꢀ Thermal-Overload Protection  
ꢀ Smaller 4mm x 4mm QFN Package (MAX1563)  
ꢀ 3µA Shutdown Current  
ꢀ UL Certification Pending  
The MAX1562/MAX1562H/MAX1563 provide several  
safety features to protect the USB port. Built-in thermal-  
overload protection turns off the switch when the die  
temperature exceeds +160°C. Accurate internal cur-  
rent-limiting circuitry protects the input supply against  
both overload and short-circuit conditions. An open-  
drain fault signal (FAULT) notifies the microprocessor  
when a thermal-overload, current-limit, undervoltage  
lockout (UVLO), or short-circuit fault occurs.  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
8 SO  
MAX1562ESA  
MAX1562HESA  
MAX1563ETC  
The MAX1562 has an active-low ON, and the  
MAX1562H has an active-high ON enable input. The  
MAX1563 has a selectable active-high or active-low  
logic-controlled enable. The current limit is pro-  
grammed from 1A to 4A using a resistor.  
8 SO  
12 QFN 4mm x 4mm  
The MAX1562/MAX1562H are available in 8-pin SO  
packages and are pin-compatible upgrades to the  
MIC2545A/MIC2549A. The MAX1563 provides the  
same features and higher current performance in a  
smaller 12-pin (4mm x 4mm) QFN package. These  
devices operate over an extended temperature range  
(-40°C to +85°C). An evaluation kit is available to speed  
designs.  
Typical Operating Circuit  
IN  
FAULT  
Applications  
INPUT  
4V TO 5.5V  
IN  
Notebook Computers  
Desktop Computers  
USB Ports and Hubs  
PDAs and Palmtop Computers  
Docking Stations  
MAX1562  
MAX1562H  
MAX1563  
ON  
ACTIVE-HIGH/ACTIVE-LOW  
SELECTABLE  
USB  
PORT  
MAX1563  
ONLY  
OUT  
OUT  
SEL  
ISET  
GND  
Pin Configurations appear at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...12

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