输出电流限制安全工作区补偿和热关机CXLD64008输出电流1A高精度低噪声LDO稳压器1.2V 1.8V的固定输出电压

目录qDf嘉泰姆

1.产品概述                       2.产品特点qDf嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 qDf嘉泰姆
5.产品封装图                     6.电路原理图                   qDf嘉泰姆
7.功能概述                        8.相关产品qDf嘉泰姆

一,产品概述(General Description)         qDf嘉泰姆

   The CXLD64008 series are highly accurate, low noise,LDO Voltage Regulators that are capable of providing an output current that is in excess of 1A with a maximum dropout voltage of 1.3V at 1A （ CXLD64008A33） .This series contains four fixed output voltages of 1.2V, 1.8V, 2.5V and 3.3V that have no minimum load requirement to maintain regulation.On chip trimming adjusts the reference/output voltage to within ±2% accuracy.Internal protection features consist of output current limiting, safe operating area compensation,and thermal shutdown. qDf嘉泰姆

  The CXLD64008series can operate with up to 18V input. Devices are available in SOT223.qDf嘉泰姆

二.产品特点(Features)qDf嘉泰姆

Output Current in Excess of 1AqDf嘉泰姆
1.)Dropout Voltage:80mV@ IOUT =100mAqDf嘉泰姆
（CXLD64008A33）qDf嘉泰姆
2.)Operating Voltage Range: 2.5V～18VqDf嘉泰姆
3.)Highly Accuracy: ±2％qDf嘉泰姆
4.)Adjustable Output Voltage OptionqDf嘉泰姆
5.)Standby Current: 52uA（TYP.）qDf嘉泰姆
6.)High Ripple Rejection: 70dB@1KHz（CXLD64008A33）qDf嘉泰姆
7.)Line Regulation: 2mV（TYP.）qDf嘉泰姆
8.)Temperature Stability≤0.5%qDf嘉泰姆
9.)Thermal Shutdown Protection：160℃qDf嘉泰姆
10.)Packages:SOT223 ,SOT89-3,TO252-2L，SOT23-3qDf嘉泰姆
三,应用范围 (Applications)qDf嘉泰姆

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四.下载产品资料PDF文档 qDf嘉泰姆

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五,产品封装图 (Package)qDf嘉泰姆

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六.电路原理图qDf嘉泰姆

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七,功能概述qDf嘉泰姆

Applications InformationqDf嘉泰姆
1. Input Bypass CapacitorqDf嘉泰姆
An input capacitor is recommended. A 10uF tantalum on the input is a suitable input bypassing for almost all applications.qDf嘉泰姆
2. Output CapacitorqDf嘉泰姆
The output capacitor is critical in maintaining regulator stability, and must meet the required conditions for both minimum amount of capacitance and ESR (Equivalent Series Resistance).The minimum output capacitance required by the CXLD64008 is 10μF,if a tantalum capacitor is used. Any increase of the output capacitance will merely improve the loop stability and transient response. The ESR of the output capacitor should be less than 0.5Ω .qDf嘉泰姆
3. Load RegulationqDf嘉泰姆
The CXLD64008 regulates the voltage that appears between its output and ground pins, or between its output and adjust pins. In some cases, line resistances can introduce errors to the voltage across the load. To obtain the best load regulation, a few precautions are needed. Figure1, shows a typical application using a fixed output regulator. The Rt1 and Rt2 are the line resistances. It is obvious that the VLOAD is less than the VOUT by the sum ofqDf嘉泰姆
the voltage drops along the line resistances. In this case, the load regulation seen at the RLOAD would be degraded from the datasheet specification. To improve this , the load should be tied directly to the output terminal on the positive side and directly tied to the ground terminal on the negative side.qDf嘉泰姆
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