MIC2544-2YMM

更新时间： 2024-09-15 04:39:55

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麦瑞 - MICREL		开关接口集成电路光电二极管驱动
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Programmable Current Limit High-Side Switch Preliminary Information

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MIC2544-2YMM 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

中文翻译

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MIC2544-2YMM 替代型号

型号	品牌	替代类型	描述	数据表
MIC2544-2YMM	MICROCHIP	功能相似	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8

与MIC2544-2YMM相关器件

型号	品牌	获取价格	描述	数据表
MIC2544-2YMMTR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8, LEAD FREE, MSOP-8
MIC2544-2YMM-TR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8
MIC2544-2YMTR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8, LEAD FREE, SOP-8
MIC2544-2YM-TR	MICROCHIP	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8
MIC2544A	MICREL	获取价格	Programmable Current Limit High-Side Switch
MIC2544A	MICROCHIP	获取价格	The MIC2544 and MIC2548 are integrated, high-side power switches optimized for low loss DC
MIC2544A-1YM	MICREL	获取价格	Programmable Current Limit High-Side Switch
MIC2544A-1YMM	MICREL	获取价格	Programmable Current Limit High-Side Switch
MIC2544A-1YMTR	MICREL	获取价格	0.1A BUF OR INV BASED PRPHL DRVR, PDSO8, LEAD FREE, SOIC-8
MIC2544A-2YM	MICREL	获取价格	Programmable Current Limit High-Side Switch

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