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| 型号： | MIC2017YM6 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 24/30页 |
| 文件大小： | 0K |
| 描述： | IC SW DISTRIBUTION ADJ SOT23-6 |
| 标准包装： | 1 |
| 类型： | 高端开关 |
| 输出数： | 1 |
| Rds（开）： | 100 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 可调 |
| 输入电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 产品目录页面： | 1114 (CN2011-ZH PDF) |
| 其它名称： | 576-1462-6 |
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Micrel, Inc.
I LIMIT vs. I OUT Measured
The MIC20XX’s current-limiting circuitry, during current
limiting, is designed to act as a constant current source
to the load. As the load tries to pull more than the
allotted current, V OUT drops and the input to output
voltage differential increases. When V IN - V OUT exceeds
1V, I OUT drops below I LIMIT to reduce the drain of fault
current on the system’s power supply and to limit
internal heating of the switch.
When measuring I OUT it is important to bear this voltage
dependence in mind, otherwise the measurement data
may appear to indicate a problem when none really
exists. This voltage dependence is illustrated in Figures
4 and 5.
In Figure 4, output current is measured as V OUT is
pulled below V IN , with the test terminating when V OUT is
1V below V IN . Observe that once I LIMIT is reached I OUT
remains constant throughout the remainder of the test.
In Figure 5 this test is repeated but with V IN - V OUT
exceeding 1V.
When V IN - V OUT > 1V, switch’s current limiting circuitry
responds by decreasing I OUT , as can be seen in Figure
5. In this demonstration, V OUT is being controlled and
I OUT is the measured quantity. In real life applications
V OUT is determined in accordance with ? ’s law by the
load and the limiting current.
MIC20xx Family
Figure 5. I OUT in Current Limiting for V IN - V OUT > 1V
This folding back of I LIMIT can be generalized by plotting
I LIMIT as a function of V OUT , as shown below in Figures 6
and 7. The slope of V OUT between I OUT = 0V and I OUT =
I LIMIT (where I LIMIT = 1A) is determined by R ON of the
switch and I LIMIT .
Normalized Output Current
1.2
1.0
0.8
0.6
0.4
0.2
vs. Output Voltage (5V)
0
0
1 2 3 4 5
6
OUTPUT VOLTAGE (V)
Figure 6. Normalized Output Current vs. Output Voltage
Figure 4. I OUT in Current Limiting for V IN - V OUT < 1V
August 2011
24
M9999-080211-D
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相关代理商/技术参数 |
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|---|---|
| MIC2017YM6TX | 功能描述:IC DISTRIBUTION SW ADJ SOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 电源分配开关 系列:- 特色产品:XRP252 Switches 标准包装:1 系列:- 类型:高端开关 输出数:2 Rds（开）:140 毫欧 内部开关:是 电流限制:1.15A 输入电压:1.75 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN（3x3） 包装:Digi-Reel® 其它名称:1016-1691-6 |
| MIC2017YML | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Adjustable Current Limit Power Distribution Switch |
| MIC2017YML TR | 功能描述:电源开关 IC - USB Programmable Current Limit Single High-Side Switch w/Kickstart - 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 |
| MIC2018YM6 | 功能描述:IC DISTRIBUTION SW ADJ SOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 电源分配开关 系列:- 特色产品:XRP252 Switches 标准包装:1 系列:- 类型:高端开关 输出数:2 Rds（开）:140 毫欧 内部开关:是 电流限制:1.15A 输入电压:1.75 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN（3x3） 包装:Digi-Reel® 其它名称:1016-1691-6 |
| MIC2018YM6 TR | 功能描述:电源开关 IC - USB Programmable Current Limit Single High-Side Switch w/Kickstart + Cslew - 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 |
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