Datasheet > MIC2544

MIC2544

更新时间： 2024-11-09 22:54:51

品牌	Logo	应用领域
麦瑞 - MICREL		开关
页数	文件大小	规格书
12页	471K
描述
Programmable Current Limit High-Side Switch Preliminary Information

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MIC2544 数据手册

MIC2544/2548

Micrel

MIC2544/2548

Programmable Current Limit High-Side Switch

Preliminary Information

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 Con-

figuration 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

Loadcurrentmanagementfeaturesincludeaprecisionresis-

tor-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

Applications

• USB power distribution

• PCI Bus Power Switching

• Notebook PC

• ACPI power distribution

• PC card hot swap applications

• Inrush current-limiting

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, andisalsousedasthethermalshutdownlatchresetfor

the MIC2548.

The MIC2544 and MIC2548 are available in active-high and

active-low enable versions in the 8-pin SOP (small-outline

package) and 8-pin MSOP (micro-small-outline package).

Typical Application

+5V

MIC2544-xBM

R_FLG

On/Off

Peripheral

OUT

FLG

GND

ILIM

OUT

R_SET

SOP pinout shown

33µF

0.1µF

Typical Advanced Configuration and Power Interface (ACPI) Application

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

June 2000

MIC2544/2548

12 3 4 5 6 7...12

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与MIC2544相关器件

型号	品牌	获取价格	描述	数据表
MIC2544_10	MICREL	获取价格	Programmable Current Limit High-Side Switch
MIC2544-1	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2544-1BM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2544-1BM	MICROCHIP	获取价格	Buffer/Inverter Based Peripheral Driver, 1 Driver, 0.1A, CMOS, PDSO8, SOP-8
MIC2544-1BMM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information
MIC2544-1BMM	MICROCHIP	获取价格	Buffer/Inverter Based Peripheral Driver, 1 Driver, 0.1A, CMOS, PDSO8, MSOP-8
MIC2544-1BMMTR	MICROCHIP	获取价格	Buffer/Inverter Based Peripheral Driver, 1 Driver, 0.1A, CMOS, PDSO8, MSOP-8
MIC2544-1BMTR	MICROCHIP	获取价格	Buffer/Inverter Based Peripheral Driver, 1 Driver, 0.1A, CMOS, PDSO8, SOP-8
MIC2544-1BMTR	MICREL	获取价格	暂无描述
MIC2544-1YM	MICREL	获取价格	Programmable Current Limit High-Side Switch Preliminary Information

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