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MIC2074

更新时间： 2024-09-16 10:57:23
品牌 Logo 应用领域
麦瑞 - MICREL 开关
页数 文件大小 规格书
16页 571K
描述
Dual-Channel Power Distribution Switch

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MIC2074 数据手册

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MIC2073/2074  
Dual-Channel Power Distribution Switch  
General Description  
Features  
• 115 mΩ typical RDS(ON)  
B
at 5.0 V  
The MIC2073/2074 are high-side MOSFET switches  
optimized for general-purpose power distribution requiring  
circuit protection.  
• 210 mΩ maximum RDS(ON) at 5.0 V  
B
• 2.7 V to 5.5 V operating range  
The MIC2073/2074 are internally current limited and have  
thermal shutdown for protecting the device and load.  
• 500 mA minimum continuous current per channel  
• Short circuit protection with thermal shutdown  
• Thermally isolated channels  
• Fault status flag (FLGA/B) separate for each channel  
• 3ms fault flag delay (TD) eliminates false assertions  
• UVLO (Undervoltage Lockout)  
The MIC2074 offers “smart” shutdown that reduces current  
consumption in fault mode. When a fault occurs due to  
thermal shutdown, the output is latched off.  
The  
MIC2074s’ output will be reset, enabling the output, either  
by removing the load or toggling the ENABLE pin.  
Both devices employ soft-start circuitry that minimizes  
inrush current in applications where highly capacitive loads  
are employed.  
• Reverse current flow blocking (no “body diode”)  
• Circuit breaker mode (MIC2074)  
• Logic-compatible inputs  
• Soft-start circuit  
• Low quiescent current  
A fault status output flag is asserted during overcurrent or  
thermal shutdown conditions. Transient faults are internally  
filtered.  
• Pin compatible with the MIC2026/2076  
The MIC2073/2074 are available in an 8-pin SOIC.  
All support documentation can be found on Micrel’s web  
site at: www.micrel.com.  
Applications  
• USB peripherals  
• General purpose power switching  
• ACPI power distribution  
• Notebook PCs  
• PDAs  
• PC card hot swap  
_________________________________________________________________________________________________  
Typical Application  
VCC  
2.7V to 5.5V  
VCONT.  
10k  
10k  
Logic Controller  
MIC2073/74  
VIN  
ON/OFF  
Load  
0.1µF  
Load  
ENA  
OUTA  
IN  
OVERCURRENT  
OVERCURRENT  
ON/OFF  
FLGA  
FLGB  
ENB  
GND  
OUTB  
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 2009 M9999-011209  
1234567...16

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