参数资料
型号: MIC2547-2BTS
厂商: Micrel Inc
文件页数: 1/15页
文件大小: 0K
描述: IC SW CURR LIMIT DUAL 16-TSSOP
标准包装: 94
类型: 高端
输入类型: 非反相
输出数: 2
导通状态电阻: 80 毫欧
电流 - 峰值输出: 1.5A
电源电压: 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: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 管件
MIC2546/2547
Dual Programable Current Limit Switch
General Description
The MIC2546 and MIC2547 are integrated high-side dual
power switches optimized for low loss dc power switching
and other power management applications, including
Advanced Configuration and Power Interface (ACPI). The
MIC2546/47 is a cost-effective, highly integrated solution
that requires few external components to satisfy USB and
ACPI requirements.
Load current management features include a precision
resistor-programmable output current-limit and a soft-start
circuit which minimizes inrush current when the switch is
enabled. Thermal shutdown, along with current-limit,
protects theswitch and the attached device.
The MIC2546/47’s open-drain flag outputs are used to
indicate current-limiting or thermal shutdown to a local
controller. The MIC2547 has an additional internal latch
which turns the output off upon thermal shutdown
providing robust fault control. The enable signal is
compatible with both 3V and 5V logic, and is also used as
the thermal shutdown latch reset for the MIC2547.
The MIC2546 and MIC2547 are available in active-high
and active-low enable versions in 16-pin TSSOP and SOP
packages.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
? 2.7V to 5.5V input
? Adjustable current-limit up to 1.5A
? Reverse current flow blocking (no “body diode”)
? 100 μ A typical on-state supply current per channel
? 2 μ A typical off-state supply current
? 120m ? maximum on-resistance
? Open-drain fault flag
? Thermal shutdown
? Thermal shutdown output latch (MIC2547)
? 2ms (slow) turn-on and fast turnoff
? Available with active-high or active-low enable
Applications
? USB power distribution
? PCI Bus Power Switching
? Notebook PC
? ACPI power distribution
? PC card hot swap applications
? Inrush current-limiting
? Ideal for dual supply applications
___________________________________________________________________________________________________________
Typical Application
Typical Advanced Configuration and Power Interface (ACPI) Application
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 2008
M9999-012508-A
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