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MIC2012-1PCQS PDF预览

MIC2012-1PCQS

更新时间: 2024-01-03 19:53:55
品牌 Logo 应用领域
麦瑞 - MICREL 控制器
页数 文件大小 规格书
16页 691K
描述
USB Power Controller

MIC2012-1PCQS 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:LSSOP,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.65可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G16
JESD-609代码:e3长度:4.9 mm
湿度敏感等级:1信道数量:2
功能数量:1端子数量:16
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:LSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.62 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:COMMERCIAL
端子面层:MATTE TIN端子形式:GULL WING
端子节距:0.635 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:3.91 mm
Base Number Matches:1

MIC2012-1PCQS 数据手册

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MIC2012/MIC2072  
USB Power Controller  
General Description  
Features  
TheMIC2012isadualchannelUSBpowerswitchdesignedto  
supportthepowerdistributionrequirementsforUSBWakeup  
from the ACPI S3 state. The MIC2012 will directly switch its  
two outputs between a 5V main supply and a 5V auxiliary  
supply normally provided in ATX style power supplies.  
• Compliant to USB power distribution specifications  
• UL Recognized Component  
• Two completely independent switches  
• Integrated switching matrix supports ACPI S0/S3 state  
transitions without external FET circuits  
• Make-before-break switching ensures glitch-free  
transitions  
The MIC2012 will adjust its current-limit threshold according  
to theACPI state it is in. In the normal active S0 state the cur-  
rent-limit is set at 500mAminimum per channel satisfying the  
USB continuous output current specification. In the S3 state  
the current-limit can be reduced to only 100mA per channel  
to minimize the current that is supplied by the auxiliary supply  
thereby ensuring that voltage regulation is maintained even  
during fault conditions.  
TheMIC2012providesmake-before-breakswitchingtoensure  
glitch-free transitions between the S3 and S0 states. Each  
channel is also thermally isolated from the other so that a  
fault in one channel does not effect the other. FAULT status  
output signals are also provided indicating overcurrent and  
thermal shutdown conditions.  
• No back-feed of auxiliary supply onto main supply dur-  
ing standby mode  
• Bi-level current-limit preserves auxiliary supply voltage  
regulation in standby mode  
• Thermally isolated channels  
• Thermal shutdown protection  
• Fault status outputs with filter prevents false assertions  
during hot-plug events  
• Latched thermal shutdown options with auto-reset  
(MIC2072)  
• Undervoltage lockout  
Applications  
The MIC2072 option latches the output off upon detecting  
an overcurrent condition for more than 5ms minimum. The  
output can be reset by either toggling the EN inputs of the  
MIC2072-1, -2 or by removing the load. Latching the output  
offprovidesacircuitbreakermodeofoperationwhichreduces  
power consumption during fault conditions.  
• Desktop PCs  
• Notebook PCs  
• Notebook Docking stations  
• LAN Servers  
• PC Motherboards  
Typical Application  
ATX Power Supply  
5V MAIN  
VBUS  
5V STANDBY  
Downstream  
D+  
D–  
MIC2012P  
USB  
Port 1  
OUT1  
OUT2  
MAIN  
AUX  
GND  
100F  
S3 Control  
S3#  
VBUS  
D+  
D–  
FAULT1#  
FAULT2#  
GND  
Downstream  
USB  
Port 2  
100F  
GND  
82801AA or Equivalent  
SLP S3#  
SLP S5#  
Overcurrent Port 1  
Overcurrent Port 1  
OC0  
OC1  
Figure 1. USB Wakeup with Control Input  
UL Recognized Component  
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
January 2005  
1
MIC2012/2072  

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