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参数资料
| 型号： | MIC2097-1YMT TR |
| 厂商： | Micrel Inc |
| 文件页数： | 18/25页 |
| 文件大小： | 0K |
| 描述： | IC DISTRIBUTION SWITCH |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | 576-3781-6 |
Micrel, Inc.
shuts down, and cools, it will re-start itself if the Enable
signal retains true (high on the ENABLE parts, low on
the ENABLE/ parts).
MIC2095/97/98/99
For the sake of this example, the typical value of CLF at
an I OUT of 1.1A is 215V. Applying Equation 5:
In Figure 2, die temperature is plotted against I OUT
assuming a constant ambient temperature of 85°C. The
plot also assumes the maximum specified switch
R LIMIT ( Ω ) =
215V
1.1A
= 195 Ω
Eq. 6
resistance at high temperature.
Choose R LIMIT = 196 ? (the closest standard 1% value)
130
120
110
100
90
80
Die Temperature vs Output Current
(Ambient Temperature = 85°C)
Tamb=85°C
Designers should be aware that variations in the
measured I LIMIT for a given R LIMIT resistor, will occur
because of small differences between individual ICs
(inherent in silicon processing) resulting in a spread of
I LIMIT values. In the example above we used the typical
value of CLF to calculate R LIMIT . We can determine
I LIMIT ’s spread by using the minimum and maximum
values of CLF and the calculated value of R LIMIT :
70
0.0
0.2
0.4
0.6
0.8
1.0
1.2
I LIMIT_MIN =
175V
196 Ω
= 0 . 89 A
Eq. 7
I OUT (A)
Figure 2. Die Temperature vs. I OUT
Setting I LIMIT
I LIMIT _ MAX =
263 V
196 Ω
= 1 . 34 A
Eq. 8
The current limit of the MIC2097 and MIC2099 parts are
user programmable and controlled by a resistor
Giving us a maximum I LIMIT variation of:
connected between the I LIMIT pin and Ground. The value
of the current limit resistor is determined by the following
equations:
I LIMIT_MIN
0.89A (-19%)
I LIMIT_TYP
1.1A
I LIMIT_MAX
1.34A (+22%)
I LIMIT =
CurrentLim itFactor(CLF)
R LIMIT
Eq. 4
For convenience, Table 2 lists the resistance values for
the R SET pin, for various current limit values.
or
R LIMIT =
CurrentLim itFactor(CLF)
I LIMIT
Eq. 5
Nominal
I LIMIT
R LIMIT
I LIMIT_MIN
I LIMIT_MAX
0.1A
1920
0.063
0.137
The Current-Limit Factor (CLF) is a number that is
characteristic to the MIC2097/9 switches. The CLF is a
product of the current-setting resistor value, and the
desired current-limit value. Please note that the CLF
varies with the current output current, so caution is
necessary to use the correct CLF value for the current
that you intend to use the part at. For example: If one
wishes to set a I LIMIT = 1.1A, looking in the electrical
specifications we will find CLF at I LIMIT = 1.1 A, as noted
in Table 1.
0.2A
0.3A
0.4A
0.5A
0.6A
0.7A
0.8A
0.9A
1.0A
1000
672
508
412
344
298
263
235
213
0.138
0.211
0.288
0.369
0.448
0.533
0.620
0.709
0.801
0.263
0.391
0.517
0.638
0.764
0.884
1.002
1.118
1.233
Min.
Typ.
Max.
Units
1.1A
195
0.895
1.346
175
215
263
V
Table 2. MIC2097 and MIC2099 R LIMIT Table
Table 1. CLF at I LIMIT = 1.1A
August 2011
18
M9999-080211-C
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2097-2YMT | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Current-Limiting Power Distribution Switches |
| MIC2097-2YMT TR | 功能描述:电源开关 IC - USB Current Limiting, High-Side Power Switch with Kickstart 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 |
| MIC2097-2YMT-TR | 功能描述:IC DISTRIBUTION SWITCH 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 开关类型:通用 输出数:1 比率 - 输入:输出:1:1 输出配置:高端 输出类型:P 通道 接口:开/关 电压 - 负载:2.5 V ~ 5.5 V 电压 - 电源（Vcc/Vdd）:不需要 电流 - 输出（最大值）:1.1A 导通电阻（典型值）:170 毫欧 输入类型:非反相 特性:压摆率受控型 故障保护:限流（可调），超温，UVLO 工作温度:-40°C ~ 125°C （TJ） 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商器件封装:6-MLF?（1.6x1.6） 标准包装:1 |
| MIC2098 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Current-Limiting Power Distribution Switches |
| MIC2098-1YMT | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Current-Limiting Power Distribution Switches |
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