首页 > 产品中心 > LED驱动电路 > AC/DC转换型高压LED驱动芯片 > 中小功率控制芯片 >CXAC8520A CXAC8520B CXAC8520C CXAC8521-5恒压恒流模式的开关电源应用1.21V电压基准电流感应电路和两个运算放大器适配器电池充电器电压控制器
CXAC8520A CXAC8520B CXAC8520C CXAC8521-5恒压恒流模式的开关电源应用1.21V电压基准电流感应电路和两个运算放大器适配器电池充电器电压控制器
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CXAC8520A CXAC8520B CXAC8520C CXAC8521-5是一个高度集成的解决方案，适用于恒压/恒流模式的开关电源应用。CXAC8520A CXAC8520B CXAC8520C CXAC8521-5包含一个精度为±1%的1.21V电压基准、一个电流感应电路和两个运算放大器。将电压基准与一个运算放大器相结合，使CXAC8520A CXAC8520B CXAC8520C CXAC8521-5成为适配器和电池充电器中使用的理想电压控制器。另一个低电压基准与另一个运算放大器相结合，使其成为输出低侧电流传感的理想限流器。
●恒压恒流控制
●精密内部电压基准
●很少有外部组件
●易于补偿
●低供电电流：0.5mA
●工作温度范围：-40至125摄氏度
●SOT33-6包装
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[ CXAC8520A ]"
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产品概述 返回TOP
CXAC8520A CXAC8520B CXAC8520C CXAC8521-5 is a highly integrated solution for a constant voltage/constant current mode SMPS application. The CXAC8520A CXAC8520B CXAC8520C CXAC8521-5 contains one 1.21V voltage reference with ±1% accuracy, one current sensing circuit and two operational amplifiers. Combining the voltage reference with one operational amplifier makes CXAC8520A CXAC8520B CXAC8520C CXAC8521-5 an ideal voltage controller for use in adapters and battery chargers. The other low voltage reference combined with the other operational amplifier makes it an ideal current limiter for output low side current sensing.产品特点 返回TOP
●Constant Voltage and Constant Current Control
●Precision Internal Voltage Reference
●Few External Components
●Easy Compensation
●Low supply current: 0.5mA
●Operating temperature range:-40 to 125℃
● Available in SOT23-6 package
应用范围 返回TOP
Adapters
Battery Chargers
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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 |
