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参数资料
| 型号： | MIC3975BMM |
| 厂商： | Micrel Inc |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .75A 8-MSOP |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.24 V ~ 16 V |
| 输入电压： | 2.25 V ~ 16 V |
| 电压 - 压降（标准）： | 0.3V @ 750mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 750mA（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
MIC3975
T A(max) = maximum ambient operating temperature
For example, the maximum ambient temperature is 50°C,
the ΔT is determined as follows:
ΔT = 125°C – 50°C
ΔT = 75°C
Using Figure 4, the minimum amount of required copper can
be determined based on the required power dissipation. Power
dissipation in a linear regulator is calculated as follows:
P D = (V IN – V OUT ) I OUT + V IN × I GND
If we use a 2.5V output device and a 3.3V input at an output
current of 750mA, then our power dissipation is as follows:
P D = (3.3V – 2.5V) × 750mA + 3.3V × 7.5mA
P D = 600mW + 25mW
P D = 625mW
From Figure 4, the minimum amount of copper required to
operate this application at a ΔT of 75°C is 160mm 2 .
Quick Method
Determine the power dissipation requirements for the design
along with the maximum ambient temperature at which the
device will be operated. Refer to Figure 5, which shows safe
Micrel
operating curves for three different ambient temperatures:
25°C, 50°C and 85°C. From these curves, the minimum
amount of copper can be determined by knowing the maxi-
mum power dissipation required. If the maximum ambient
temperature is 50°C and the power dissipation is as above,
625mW, the curve in Figure 5 shows that the required area
of copper is 160mm 2 .
The θ JA of this package is ideally 80°C/W, but it will vary
depending upon the availability of copper ground plane to
which it is attached.
February 2005
11
MIC3975
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相关代理商/技术参数 |
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|---|---|
| MIC3975BMM TR | 功能描述:IC REG LDO ADJ .75A 8-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC3975YMM | 功能描述:低压差稳压器 - LDO 750mA uCap LDO in Power MSOP-8 Pkg(Lead Free) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC3975YMM TR | 功能描述:低压差稳压器 - LDO 750mA uCap LDO in Power MSOP-8 Pkg(Lead Free) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MIC4043 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Low-Voltage Secondary-Side Shunt Regulator |
| MIC4043_02 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Low-Voltage Secondary-Side Shunt Regulator |
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