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參數(shù)資料
| 型號： | MIC2017YML |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | Adjustable Current Limit Power Distribution Switch |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO6 |
| 封裝： | 2 X 2 MM, LEAD FREE, MLF-6 |
| 文件頁數(shù)： | 13/25頁 |
| 文件大?。?/td> | 410K |
| 代理商： | MIC2017YML |
Micrel, Inc.
MIC20XX Family
January 2009
20
M9999-012109-A
Figure 5. IOUT in Current Limiting for VIN
- VOUT > 1V
This folding back of ILIMIT can be generalized by plotting
ILIMIT as a function of VOUT, as shown below in Figures 6
and 7. The slope of VOUT between IOUT = 0V and IOUT =
ILIMIT (where ILIMIT = 1A) is determined by RON of the
switch and ILIMIT.
0
0.2
0.4
0.6
0.8
1.0
1.2
01
23
4
5
6
NO
RM
A
L
IZ
E
D
O
U
T
P
U
T
CUR
RE
NT
(A
)
OUTPUT VOLTAGE (V)
Normalized Output Current
vs. Output Voltage (5V)
Figure 6.
0
0.2
0.4
0.6
0.8
1.0
1.2
0
0.5 1.0
1.5
2.0
2.5 3.0
NO
RM
A
L
IZ
E
D
O
U
T
P
U
T
CUR
RE
NT
(A
)
OUTPUT VOLTAGE (V)
Normalized Output Current
vs. Output Voltage (2.5V)
Figure 7.
CSLEW
2003
2004
2005
2006
2007
2008
2009
2013
2014
2015
2016
2017
2018
2019
Only parts in white boxes have CSLEW pin.
(Not available in 5-pin SOT-23 packages).
The CSLEW pin is provided to increase control of the
output voltage ramp at turn-on. This input allows
designers the option of decreasing the output’s slew rate
(slowing the voltage rise) by adding an external
capacitance between the CSLEW and VIN pins. This
capacitance slows the rate at which the pass FET gate
voltage increases and thus, slows both the response to
an Enable command as well as VOUT’s ascent to its final
value.
Figure 8 illustrates effect of CSLEW on turn-on delay and
output rise time.
0
0.002
0.004
0.006
0.008
0.01
0.012
0.014
00 00 00 00 00
TI
M
E
(
m
S
)
CSLEW (nF)
Typical Turn-on Times
vs. External C
SLEW
Capacitance
2
4
6
8
10
12
14
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
T
RISE
T
DELAY
T
ON
Figure 8.
CSLEW’s effect on ILIMIT
An
unavoidable
consequence
of
adding
CSLEW
capacitance is a reduction in the MIC20X5 – 20X8’s
ability to quickly limit current transients or surges. A
sufficiently large capacitance can prevent both the
primary and secondary current limits from acting in time
to prevent damage to the MIC20X5 – 20X8 or the
system from a short circuit fault. For this reason, the
upper limit on the value of CSLEW is 4nF.
Variable Under Voltage Lock Out (VUVLO)
2003
2004
2005
2006
2007
2008
2009
2013
2014
2015
2016
2017
2018
2019
Only parts in white boxes have VUVLO pin and functionality.
Power conscious systems, such as those implementing
ACPI, will remain active even in their low power states
and may require the support of external devices through
both phases of operation. Under these conditions, the
current allowed these external devices may vary
according to the system’s operating state and as such
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| MIC2017 | Adjustable Current Limit Power Distribution Switch |
| MIC2077-2YWMTR | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
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| MIC2017YML TR | 功能描述:電源開關(guān) IC - USB Programmable Current Limit Single High-Side Switch w/Kickstart - Lead Free RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
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| MIC2018YM6 TR | 功能描述:電源開關(guān) IC - USB Programmable Current Limit Single High-Side Switch w/Kickstart + Cslew - Lead Free RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MIC2018YM6-TR | 功能描述:IC SW DISTRIBUTION ADJ SOT23-6 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 開關(guān)類型:通用 輸出數(shù):1 比率 - 輸入:輸出:1:1 輸出配置:高端 輸出類型:P 通道 接口:開/關(guān) 電壓 - 負載:2.5 V ~ 5.5 V 電壓 - 電源（Vcc/Vdd）:不需要 電流 - 輸出（最大值）:2A 導通電阻（典型值）:70 毫歐 輸入類型:非反相 特性:壓擺率受控型 故障保護:限流（可調(diào)），超溫 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:SOT-23-6 供應商器件封裝:SOT-23-6 標準包裝:1 |
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