CXAC431A CXAC431B系列集成电路是三端可调并联调节器，在整个工作范围内保证热稳定性。这些集成电路具有很强的导通特性、较低的温度系数和较低的输出阻抗，是开关电源、充电器和其他可调稳压器等应用中齐纳二极管的理想替代品。CXAC431电压类型为40V，输出电压可设定为VREF（2.5V）与对应的最大阴极电压之间的任何值。CXAC431A精度基准提供两种带隙公差：0.4%和0.8%
●可编程精确输出电压2.5V至36V
●非常精确的参考电压：典型的0.15%
●电容负载下的高稳定性
●低温偏差：典型4.5mV
●低等效全量程温度系数，典型值为20PPM/℃
●低动态输出电阻：典型0.2Ω
●汇电流容量从1毫安到100毫安
●低输出噪声
●宽工作范围-40至125摄氏度
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[ CXAC431A ]
目录
产品概述 返回TOP
The CXAC431A CXAC431B series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger and other adjustable regulators. The CXAC431A voltage type is 40V. The output voltage can be set to any value between VREF(2.5V) and the corresponding maximum cathode voltage. The CXAC431A precision reference is offered in two band gap tolerance: 0.4% and 0.8%
产品特点 返回TOP
●Programmable Precise Output Voltage from 2.5V to 36V
●Very Accurate Reference Voltage: Typical 0.15%
●High Stability under Capacitive Load
●Low Temperature Deviation: Typical 4.5mV
● Low Equivalent Full-range Temperature Coefficient with 20PPM/℃ Typical
●Low Dynamic Output Resistance: Typical 0.2Ω
● Sink Current Capacity from 1mA to 100 mA
● Low Output Noise
● Wide Operating Range of -40 to 125℃
●TO-92, SOT23-3 package
应用范围 返回TOP
● Charger
●Voltage Adapter
●Switching Power Supply
●Graphic Card
●Precision Voltage Reference
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产品封装图 返回TOP
电路原理图 返回TOP
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| AC/DC Converter Supply（AC/DC转换器配套芯片） | ||||||
| Part Number | VKA | IKA | VREF | Voltage Tolerance | IKA(MIN) | Package |
| CXAC431A | VREFto 36V | 1 to 100mA | 2.5V | ±0.4% | 400uA | TO92/ SOT23-3 |
| CXAC431B | VREF to 36V | 1 to 100mA | 2.5V | ±1% | 400uA | TO92/ SOT23-3 |
| Part Number | Vcc | Vsense | VREF | Voltage Tolerance | Supply Current | Package |
| CXAC8520A | 12V | 200mv | 1.21V | ±1% | 1.2mA | SOT23-6 |
| CXAC8520B | 18V | 200mv | 1.21V | ±1% | 1.2mA | SOT23-6 |
| CXAC8520C | 18V | 70mv | 1.21V | ±1% | 1.2mA | SOT23-6 |
| Part Number | Viso | Vcotl | CTR | Voltage Tolerance | IDD | Package |
| CXAC8521-5 | 5000V | 5.0V | 50-600% | ±3% | 50mA | DIP4 |
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