参数资料
| 型号： | MIC5316-F4CYMT TR |
| 厂商： | Micrel Inc |
| 文件页数： | 11/14页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.5V/1.2V/1V 12-TMLF |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 1.5V，1.2/1V |
| 输入电压： | 1.7 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.085V @ 300mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 300mA |
| 电流 - 限制（最小）： | 350mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-UFDFN 裸露焊盘，12-TMLF? |
| 供应商设备封装： | 12-TMLF?（2.5x2.5） |
| 包装： | 标准包装 |
| 产品目录页面： | 1102 (CN2011-ZH PDF) |
| 其它名称： | 576-3145-6 |
? T J(MAX) ? T A
P D(MAX) = ?
?
θ JA
?
?
Micrel, Inc.
Thermal Considerations
The MIC5316 is designed to provide 300mA of
continuous current for both outputs in a very small
package. Maximum ambient operating temperature can
be calculated based upon the output current and the
voltage drop across the part. Given that the input voltage
is 1.8V, the output voltage is 1.5V for V OUT1 , 1.0V for
V OUT2 and the output current = 300mA for each output.
The actual power dissipation of the regulator circuit can
be determined using the equation:
P D = (V IN – V OUT1 ) I OUT1 + (V IN – V OUT2 ) I OUT2 + V BIAS I GND
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.
P D = (1.8V – 1.5V) × 300mA + (1.8V – 1.0V) × 300mA
P D = 0.33W
To determine the maximum ambient operating
temperature of the package, use the junction-to-ambient
thermal resistance of the device and the following basic
equation:
?
? ?
MIC5316
T J(max) = 125°C, the maximum junction temperature of
the die. The junction-to-ambient thermal resistance for
the minimum footprint, is θ JA = 70°C/W.
Substituting P D for P D(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating the MIC5316-F5CYMT at
an input voltage of 1.8V and 300mA, loads at each
output with a minimum footprint layout, the maximum
ambient operating temperature T A can be determined as
follows:
0.33W = (125°C – T A )/(70°C/W)
T A = 101.9°C
For a full discussion of heat sinking and thermal effects
on voltage regulators, refer to the “Regulator Thermals”
section of Micrel’s Designing with Low-Dropout Voltage
Regulators handbook. This information can be found on
Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
July 2008
11
M9999-070208-A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC5316-F5CYMT TR | 功能描述:低压差稳压器 - LDO Low Vin/Vout Dual 300mA LDO with VSC + POR in 2.5mm x 2.5mm TMLF 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 |
| MIC5316-F5CYMT-TR | 功能描述:Linear Voltage Regulator IC Positive Fixed 2 Output 1.5V, 1.3/1V 300mA 12-TMLF? (2.5x2.5) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 稳压器拓扑:正，固定式 电压 - 输出:1.5V，1.3/1V 电流 - 输出:300mA 电压 - 跌落（典型值）:0.085V @ 300mA 稳压器数:2 电压 - 输入:1.7 V ~ 5.5 V 电流 - 限制（最小值）:350mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:12-UFDFN 裸露焊盘，12-TMLF? 供应商器件封装:12-TMLF?（2.5x2.5） 标准包装:1 |
| MIC5316-GGCYMT TR | 功能描述:低压差稳压器 - LDO Low Vin/Vout Dual 300mA LDO with VSC + POR in 2.5mm x 2.5mm TMLF 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 |
| MIC5316-GGCYMT-TR | 功能描述:Linear Voltage Regulator IC Positive Fixed 2 Output 1.8V, 1.8/1V 300mA 12-TMLF? (2.5x2.5) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 稳压器拓扑:正，固定式 电压 - 输出:1.8V，1.8/1V 电流 - 输出:300mA 电压 - 跌落（典型值）:0.085V @ 300mA 稳压器数:2 电压 - 输入:1.7 V ~ 5.5 V 电流 - 限制（最小值）:350mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:12-UFDFN 裸露焊盘，12-TMLF? 供应商器件封装:12-TMLF?（2.5x2.5） 标准包装:1 |
| MIC5316-GW3YMT | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
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