收藏本站
MIC2545A/2549A
Programmable Current-Limit
High-Side Switch
General Description
Features
The MIC2545A and MIC2549A 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
MIC2545A/49A 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 adjustable current-
limit, protects the switch and the attached device.
The MIC2545A/49A’s open-drain flag output is used to
indicate current-limiting or thermal shutdown to a local
?
?
?
?
?
?
?
?
?
?
?
2.7V to 5.5V input
Adjustable current-limit up to 3A
Reverse current flow blocking
90μA typical on-state supply current
1μA typical off-state supply current
50m ? maximum on-resistance
Open-drain fault flag
Thermal shutdown
Thermal-shutdown output latch (MIC2549A)
2ms (slow) soft-start turn-on, fast turnoff
Available with active-high or active-low enable
controller. The MIC2549A has an additional internal latch
which turns the output off upon thermal shutdown,
Applications
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 MIC2549A.
The MIC2545A and MIC2549A are available in active-high
and active-low enable versions in 8-pin DIP, SOIC, and
TSSOP packages.
Data sheets and support documentation can be found on
?
?
?
?
?
?
USB power distribution
PCI Bus Power Switching
Notebook PC
ACPI power distribution
PC card hot swap applications
Inrush current-limiting
Micrel’s web site at: www.micrel.com .
_________________________________________________________________________________________________________________________
Typical 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
June 2011
M9999-062711-A
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
SS10PH45HM3/86A DIODE SCHOTTKY 10A 45V SMPC
A9BBA-0808F FLEX CABLE - AFF08A/AF08/AFF08A
A9BAG-1603F FLEX CABLE - AFF16G/AF16/AFE16T
MIC2505-2BN IC SW SGL 2A HIGH SIDE 8-DIP
GBM28DTKD CONN EDGECARD 56POS DIP .156 SLD
A9BBG-0202F FLEX CABLE - AFF02G/AF02/AFF02G
GMM11DSXN CONN EDGECARD 22POS DIP .156 SLD
F970G107MNC CAP TANT 100UF 4V 20% 2917
相关代理商/技术参数
MIC2545A-1BMTR 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
MIC2545A-1BN 功能描述:IC SW CURR LIMIT HI SIDE 8-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 内部开关 系列:- 标准包装:1 系列:- 类型:高端 输入类型:非反相 输出数:1 导通状态电阻:85 毫欧 电流 - 输出 / 通道:2A 电流 - 峰值输出:6A 电源电压:1.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:4-UFDFN 裸露焊盘，4-TMLF? 供应商设备封装:4-TMLF?（1.2x1.6） 包装:剪切带 (CT) 其它名称:576-1574-1
MIC2545A-1BTS 功能描述:IC SW CURR LIMIT HI SIDE 14TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 内部开关 系列:- 标准包装:1 系列:- 类型:高端 输入类型:非反相 输出数:1 导通状态电阻:85 毫欧 电流 - 输出 / 通道:2A 电流 - 峰值输出:6A 电源电压:1.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:4-UFDFN 裸露焊盘，4-TMLF? 供应商设备封装:4-TMLF?（1.2x1.6） 包装:剪切带 (CT) 其它名称:576-1574-1
MIC2545A-1BTS TR 功能描述:IC SW CURR LIMIT HI SIDE 14TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 内部开关 系列:- 标准包装:1 系列:- 类型:高端 输入类型:非反相 输出数:1 导通状态电阻:85 毫欧 电流 - 输出 / 通道:2A 电流 - 峰值输出:6A 电源电压:1.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:4-UFDFN 裸露焊盘，4-TMLF? 供应商设备封装:4-TMLF?（1.2x1.6） 包装:剪切带 (CT) 其它名称:576-1574-1
MIC2545A-1YM 功能描述:电源开关 IC - USB Programmable Current Limit Single High-Side Switch - Lead Free RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
MIC2545A-1YM TR 功能描述:电源开关 IC - USB Programmable Current Limit Single High-Side Switch - Lead Free RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
MIC2545A-1YN 功能描述:电源开关 IC - USB Programmable Current Limit High-Side Switch RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
MIC2545A-1YTS 功能描述:电源开关 IC - USB Programmable Current Limit Single High-Side Switch - Lead Free RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
    • 我
    • 采购
    • 搜索
    • 会员