参数资料
型号: MIC5255-3.0BD5 TR
厂商: Micrel Inc
文件页数: 11/13页
文件大小: 0K
描述: IC REG LDO 3V .15A TSOT23-5
标准包装: 3,000
稳压器拓扑结构: 正,固定式
输出电压: 3V
输入电压: 最高 6V
电压 - 压降(标准): 0.135V @ 150mA
稳压器数量: 1
电流 - 输出: 150mA
电流 - 限制(最小): 160mA
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SOT-23-5 细型,TSOT-23-5
供应商设备封装: TSOT-23-5
包装: 带卷 (TR)
其它名称: MIC5255-3.0BD5TR
MIC5255-3.0BD5TR-ND
Micrel, Inc.
The junction-to-ambient thermal resistance for the
minimum footprint is 235°C/W, from Table 1. The
maximum power dissipation must not be exceeded for
proper operation. Using the output voltage of 3.0V and
an output current of 150mA, the maximum input voltage
can be determined. Because this device is CMOS and
the ground current is typically 100μA over the load
range, the power dissipation contributed by the ground
current is < 1% and can be ignored for this calculation:
315mW = (V IN – 3.0V) 150mA
315mW = V IN × 150mA – 450mW
810mW = V IN × 150mA
V IN(max) = 5.4V
MIC5255
Therefore, a 3.0V application at 150mA of output current
can accept a maximum input voltage of 5.4V in a SOT-
23-5 package. For a full discussion of heat sinking and
thermal effects on voltage regulators, refer to the “ Reg-
ulator Thermals ” section of Micrel’s Designing with Low-
Dropout Voltage Regulators handbook .
November 2006
11
M9999-110906
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