参数资料
| 型号： | AP1186K5-25L-13 |
| 厂商： | Diodes/Zetex |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.5V 1.5A TO263-5L |
| 标准包装： | 800 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.5V |
| 输入电压： | 最高 16V |
| 电压 - 压降（标准）： | 0.26V @ 1.5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1.5A |
| 电流 - 限制（最小）： | 1.6A |
| 工作温度： | 0°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-6，D²Pak（5 引线+接片），TO-263BA |
| 供应商设备封装： | TO-263-5 |
| 包装： | 带卷 (TR) |
AP1186
1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Function Descriptions (Continued)
can operate with junction temperatures in the range of 150 C, it is
Stability
The AP1186-XXX requires the use of an output capacitor as part
of the frequency compensation in order to make the regulator
stable. Typical designs for the microprocessor applications use
standard electrolytic capacitors with typical ESR in the range of
50 to 100m ? and an output capacitance of 100uF to 1000uF.
Thermal Design
The AP1186-XXX incorporates an internal thermal shutdown that
protects the device when the junction temperature exceeds the
allowable maximum junction temperature. Although this device
o
recommended that the selected heat sink be chosen such that
during maximum continuous load operation the junction
temperature is kept below this number. The example below
shows the steps in selecting the proper surface mount package.
Assuming, the following conditions:
Vout = 2.5V
Fortunately as the capacitance increases, the ESR decreases
resulting in a fixed RC time constant. The AP1186-XXX takes
advantage of the phenomena in making the overall regulator loop
stable.
For most applications a minimum of 100uF aluminum electrolytic
capacitor insures both stability and good transient response.
Vin = 3.3V
Vctrl = 5V
Iout = 1.5A DC Avg.
Calculate the maximum power dissipation using the
following equation:
Pd = Iout*(Vin-Vout)+(Iout/60)*(Vctrl-Vout)
Pd = 2*(3.3-2.5)+(2/60)*(5-2.5) = 1.68W
Using table below select the proper package and the
amount of copper board needed.
Package
TO263
Copper Area
Pad Size-1.4”X1.4”
Θ JA ( o C/W)
25-45
Max Pd ( Ta = 25 o C )
2.4W-4.4W
Max Pd ( Ta = 45 o C )
2.0W-3.6W
Note: Above table is based on the maximum junction temperature of 135 C. As shown in the above table, any of the two packages will do
o
the job.
AP1186 Rev. 1 - 0
6 of 9
www.diodes.com
MARCH 2007
? Diodes Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AP1186K525LA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:1.5A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
| AP1186K5-25L-U | 功能描述:低压差稳压器 - LDO LDO BI 1.5A 0.5V 16-18V 1.25V 2.5V FX 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 |
| AP1186K533 | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:1.5A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
| AP1186K533A | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:1.5A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
| AP1186K533L | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:1.5A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator |
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