参数资料
型号: MIC37112YMT TR
厂商: Micrel Inc
文件页数: 17/20页
文件大小: 0K
描述: IC REG LDO ADJ 1A 6TMLF
特色产品: MIC37110/112 and MIC37120/122 LDOs
标准包装: 5,000
稳压器拓扑结构: 正,可调式
输出电压: 可调至 1V
输入电压: 2.375 V ~ 5.5 V
电压 - 压降(标准): 0.23V @ 1A
稳压器数量: 1
电流 - 输出: 1A
电流 - 限制(最小): 1.2A
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 6-VDFN 裸露焊盘,6-TMLF?
供应商设备封装: 6-TMLF?(2x2)
包装: 带卷 (TR)
to operate this application at a ΔT of 75°C is 160mm .
is 160mm .
Micrel, Inc.
If we use a 2.5V output device and a 3.3V input at an
output current of 1A, then our power dissipation is as
follows:
P D = (3.3V – 2.5V) × 1A + 3.3V × 11mA
P D = 800mW + 36mW
P D = 836mW
From Figure 4, the minimum amount of copper required
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 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 maximum power dissipation
required. If the maximum ambient temperature is 50°C
and the power dissipation is as above, 836mW, the
curve in Figure 5 shows that the required area of copper
2
MIC37110/MIC37112
MIC37120/MIC37122
The θ JA of this package is ideally 63°C/W, but it will vary
depending upon the availability of copper ground plane
to which it is attached.
Figure 5. Copper Area vs. Power-SOIC Power Dissipation
December 2012
17
M9999-121312-A
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