參數(shù)資料
型號(hào)： MIC2583R-MBQS TR
廠商： Micrel Inc
文件頁(yè)數(shù)： 16/25頁(yè)
文件大?。?/td> 826K
描述： IC CTRLR HOT SWAP 200MV 16-QSOP
標(biāo)準(zhǔn)包裝： 2,500
類型： 熱交換控制器
應(yīng)用： 通用
內(nèi)部開(kāi)關(guān)： 無(wú)
電源電壓： 2.3 V ~ 13.2 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-QSOP
包裝： 帶卷 (TR)
其它名稱： MIC2583R-MBQSTR
MIC2583R-MBQSTR-ND
Micrel, Inc.
MIC2582/MIC2583
 
 
April 2009 
16
M9999-043009-C
 
Application Information
Design Consideration for Output Undervoltage
Detection
For output undervoltage detection, the first consideration
is to establish the output voltage level that indicates
power is good. For this example, the output value for
which a 12V supply will signal good is 11V. Next,
consider the tolerances of the input supply and FB
threshold (V
FB
). For this example, the 12V supply varies
?%, thus the resulting output voltage may be as low as
11.4V and as high as 12.6V. Additionally, the FB
threshold has ?0mV tolerance and may be as low as
1.19V and as high as 1.29V. Thus, to determine the
values of the resistive divider network (R5 and R6) at the
FB pin, shown in the typical application circuit on page 1,
use the following iterative design procedure.
1)   Choose R6 to allow 100礎(chǔ) or more in the FB
resistive divider branch.
k&
.
A
A
R
9
12
100
1.29V
100
V
6
FB(MAX)
=
=
=
?/DIV>
?/DIV>
 
     R6 is chosen as 12.4k& ?%.
2)   Next, determine R5 using the output good
voltage of 11V and the following equation:
(
)
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
=
R6
R6
R5
FB
OUT(Good)
V
V
  (9)
Using some basic algebra and simplifying Equation 9 to
isolate R5, yields:
 
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>

?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
=
1
6
5
FB(MAX)
OUT(Good)
V
V
R
R
 
 
(9.1)
where V
FB(MAX)
= 1.29V, VOUT(Good)  = 11V, and R6 is
12.4k&. Substituting these values into Equation 9.1 now
yields R5 = 93.33k&. A standard 93.1k& ?% is selected.
Now, consider the 11.4V minimum output voltage, the
lower tolerance for R6 and higher tolerance for R5,
12.28k& and 94.03k&, respectively. With only 11.4V
available, the voltage sensed at the FB pin exceeds
V
FB(MAX)
, thus the /POR and PWRGD (MIC2583/83R)
signals will transition from LOW to HIGH, indicating
power is good given the worse case tolerances of this
example. Lastly, in giving consideration to the leakage
current associated with the FB input, it is recommended
to either: 1) provide ample design margin (20mV to
30mV) to allow for loss in the potential (V) at the FB
pin, or 2) allow >>100礎(chǔ) to flow in the FB resistor
network.
PCB Connection Sense
There   are   several   configuration   options   for   the
MIC2582/83s ON pin to detect if the PCB has been fully
seated in the backplane before initiating a start-up cycle.
In the typical applications circuit, the MIC2582/83 is
mounted on the PCB with a resistive divider network
connected to the ON pin. R2 is connected to a short pin
on the PCB edge connector. Until the connectors mate,
the ON pin is held low which keeps the GATE output
charge pump off. Once the connectors mate, the resistor
network is pulled up to the input supply,
 
 
Figure 6. PCB Connection Sense with ON/OFF Control
相關(guān)PDF資料
PDF描述
MIC2585-2MBTS TR IC CTRLR HOT SWAP DUAL 24-TSSOP
MIC2586R-2BM TR IC CTRLR/SEQ HOT SWAP 14-SOIC
MIC2587R-2BM TR IC CTRLR HOT SWAP POS HV 8-SOIC
MIC2590B-5BTQ TR IC PCI HOT PLUG CTLR DUAL 48TQFP
MIC2591B-2BTQ TR IC PCI HOT PLUG CTLR DUAL 48TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC2583R-MYQS 功能描述:熱插拔功率分布 Single-Channel Hot-Swap Controller - 200mV Fast-Trip Threshold - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MIC2583R-MYQS TR 功能描述:熱插拔功率分布 Single-Channel Hot-Swap Controller - 200mV Fast-Trip Threshold - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MIC2584-JBTS 功能描述:IC CTRLR HOT SWAP DUAL 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
MIC2584-JBTS TR 功能描述:IC CTRLR HOT SWAP DUAL 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
MIC2584-JYTS 功能描述:熱插拔功率分布 Dual Channel Hot-Swap Controller - 100mV Threshold - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*