Datasheet > MIC2548

MIC2548

更新时间： 2024-11-09 10:57:15

品牌	Logo	应用领域
麦瑞 - MICREL		开关
页数	文件大小	规格书
14页	1296K
描述
Programmable Current Limit High-Side Switch

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MIC2548 数据手册

MIC2544/2548

Programmable Current Limit

High-Side Switch

General Description

Features

The MIC2544 and MIC2548 are integrated, high-side

power switches optimized for low loss DC power switching

and other power management applications, including

Advanced Configuration and Power Interface (ACPI).

The MIC2544/48 is a cost-effective, highly integrated

solution that requires few external components to satisfy

USB and ACPI requirements.

• 2.7V to 5.5V input

• Adjustable current-limit up to 1.5A

• Reverse current flow blocking (no “body diode”)

• 75μA typical on-state supply current

• 1μA typical off-state supply current

• 120mΩ maximum on-resistance

• Open-drain fault flag

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 the switch and the attached device.

• Thermal shutdown

• Thermal shutdown output latch (MIC2548)

• 2ms (slow) turn-on and fast turnoff

• Available with active-high or active-low enable

The MIC2544/48’s open-drain flag output is used to

indicate current-limiting or thermal shutdown to a local

controller. The MIC2548 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 MIC2548.

Applications

• USB power distribution

• PCI bus power switching

• Notebook PC

• ACPI power distribution

• PC card hot swap applications

• Inrush current-limiting

The MIC2544 and MIC2548 are available in active-high

and active-low enable versions in the 8-pin SOIC

(small-outline integrated circuit) and 8-pin MSOP (micro-

small-outline package).

_________________________________________________________________________________________________________

Typical Application

Typical Advanced Configuration and Power Interface (ACPI) Application

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-043010

April 2010

12 3 4 5 6 7...14

中文翻译

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与MIC2548相关器件

型号	品牌	获取价格	描述	数据表
MIC2548-1BM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2548-1BMM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2548-1BMMTR	MICROCHIP	获取价格	Buffer/Inverter Based Peripheral Driver, 1 Driver, 0.1A, CMOS, PDSO8, MSOP-8
MIC2548-1YM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2548-1YM	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8
MIC2548-1YMM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2548-1YMMTR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8, LEAD FREE, MSOP-8
MIC2548-1YMTR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8, LEAD FREE, SOP-8
MIC2548-1YM-TR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8
MIC2548-2BM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information

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