参数资料
型号: MIC2074-1YM TR
厂商: Micrel Inc
文件页数: 1/16页
文件大小: 0K
描述: IC PWR DISTRIBUTION SW 2CH 8SOIC
标准包装: 2,500
类型: 高端开关
输出数: 2
Rds(开): 170 毫欧
内部开关:
电流限制: 700mA
输入电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 带卷 (TR)
MIC2073/2074
Dual-Channel Power Distribution Switch
General Description
Features
115 m ? typical R DS(ON) at 5.0 V
210 m ? maximum R DS(ON) at 5.0 V
The MIC2073/2074 are high-side MOSFET switches
optimized for general-purpose power distribution requiring
circuit protection.
The MIC2073/2074 are internally current limited and have
thermal shutdown for protecting the device and load.
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.
A fault status output flag is asserted during overcurrent or
thermal shutdown conditions. Transient faults are internally
filtered.
The MIC2073/2074 are available in an 8-pin SOIC.
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B
B
2.7 V to 5.5 V operating range
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 (T D ) eliminates false assertions
UVLO (Undervoltage Lockout)
Reverse current flow blocking (no “body diode”)
Circuit breaker mode (MIC2074)
Logic-compatible inputs
Soft-start circuit
Low quiescent current
Pin compatible with the MIC2026/2076
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
V CONT.
10k
10k
V CC
2.7V to 5.5V
Logic Controller
MIC2073/74
VIN
ON/OFF
ENA
OUTA
Load
OVERCURRENT
OVERCURRENT
ON/OFF
FLGA
FLGB
ENB
IN
GND
OUTB
0.1μF
Load
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
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