带ON/OFF开关低ESR电容200mA高速电压调整器CXLD64182高精度低噪声高速度电压源电路误差放大器电路过流保护电路和相位补偿电路 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
目录7.相关产品 产品概述 返回TOP CXLD64182系列是具有高精度,低噪声,高速度,兼容低ESR电容,采用CMOS工艺生产的低压差LDO电压调整器,内部包括参考电压源电路,误差放大器电路,过流保护电路和相位补偿电路。CXLD64182系列可通过在使能端端子输入低电平信号使芯片工作于待机状态。在该状态下,CXLD64182B系列可通过芯片内部电路实现输出端电容自动放电的功能,使得输出端电压VOUT迅速恢复到Vss。CXLD64182系列的输出电压可在0.8~5.0V范围内,利用激光微调技术,可实现以0.05V为间隔自由选择。CXLD64182系列内部的FoldBack电路可提供过流和短路保护。该系列还具有低功耗(TYP.25μA)和低压差的优点(80mV@100mA,VOUT=3.0V),兼容低ESR的陶瓷电容。当选用超小型的USP-4封装时,可进一步减少在电路板上面所需要的面积尺寸。The CXLD64182 series is a high accuracy, low noise, high speed, low dropout CMOS regulator with high ripple rejection. The series includes a reference voltage source, an error amplifier, a current limiter, and a phase compensation circuit. The CE function enables the entire circuit to be in stand-by state by inputting low level signal. As for the CXLD64182B/D stand-by mode, the electric charge at the output capacitor (CL) will be discharged by the internal auto-discharge switch, and as a result the VOUT pin quickly returns to the VSS level. The output stabilization capacitor (CL) is also compatible with low ESR ceramic capacitors. Output voltage is selectable in 0.05V increments within a range of 0.80V~5.00V, using the laser trimming technology set in factory. The current limiter's fold-back circuit also operates as a short circuit protection and an output current limiter at the output pin. The series achieves a fast response with only 25μA of low power consumption. Also the series has low dropout voltage characteristics, which is 80mV at IOUT=100mA and VOUT=3.0V. With the use of small USP-4 and ultra small USPN-4 packages, a small footprint circuit can be designed. 产品特点 返回TOP
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