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| 型号： | MIC2341-2YTQ TR |
| 厂商： | Micrel Inc |
| 文件页数： | 25/32页 |
| 文件大小： | 1277K |
| 描述： | IC HOT PLUG CTLR DUAL PCI 48TQFP |
| 标准包装： | 2,000 |
| 类型： | 热交换控制器 |
| 应用： | 通用型，PCI Express? |
| 内部开关： | 无 |
| 电流限制： | 可调 |
| 电源电压： | 3.3V，12V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TQFP |
| 供应商设备封装： | 48-TQFP（7x7） |
| 包装： | 带卷 (TR) |
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Micrel, Inc.
MIC2341/2341R
October 2007
25
M9999-102507-A
(408) 944-0800
1
X
0
1 UV X
X
X
X
X
X
X
X
X
0
1
X
0
1
X UV X
X
X
X
X
X
X
X
0
X
1
0
1
X
X UV X
X
X
X
X
X
X
0
X
X
X
X
X
X
X
1
X
0
1 UV X
X
0
X
X
X
X
X
X
X
1
X
0
1
X UV X
0
X
X
X
X
X
X
X
X
1
0
1
X
X UV 0
where 1 = Logic HIGH
0 = Logic LOW
X = Dont care
Table 1. SYSPWRGD Truth Table
Hardware Interface
Once the input power supply voltages are above their
respective UVLO thresholds, the MIC2341/MIC2341Rs
hardware interface can be enabled for power control by
asserting the control input pins (/CRSW[A/B],
AUXEN[A/B], and ON[A/B]) appropriately for each slot.
The MIC2341/MIC2341Rs ON[A/B] and AUXEN[A/B]
signals are asserted active-HIGH, level-sensitive digital
inputs with internal pull-up
45k& resistors to VSTBY[A]
to save pc board area and external component costs. As
such, external hot-plug controllers connecting to these
pins should configure their respective output drivers to
OPEN-DRAIN and configure their firmware to de-assert
these signals to turn OFF either the MAIN[A/B] outputs
or the VAUX[A/B] outputs. As these input control signals
are already asserted after POR, the corresponding
/CRSW[A/B] control signal should be used to enable the
slots gate drive circuits to initiate a power-up sequence.
For example, in order for the MIC2341/MIC2341R to
switch on the VAUX supply for either slot, the
AUXEN[A/B] control can be enabled during or after the
power-on-reset operation (typically, t
POR
= 160祍. The
timing response diagram of Figure 9 illustrates the
hardware interface operation where an overcurrent fault
is detected by the MIC2341/MIC2341R controller after
initiating a power-up sequence. The MAIN (+12V &
+3.3V) and VAUX[A/B] supply rails, /FAULT, /PWRGD
and /INT output responses for both AUX and MAIN are
shown in the figure.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2341R-2YTQ | 功能描述:热插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MIC2341R-2YTQ TR | 功能描述:热插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MIC2342-2YTQ | 功能描述:热插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MIC2342-2YTQ TR | 功能描述:热插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MIC2342R-2YTQ | 功能描述:热插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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