PFM控制的升压DC变换器控制器集成电路CXSU63153输出电压1.5V到7.0V振荡频率100kHz电压检测分离电源 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
目录 1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载(产品PDF文档) 一,产品概述(General Description) to generate low supply voltage by the combination of PFM control and CMOS structure. The series is ideal for applications where a longer battery life is needed such as in portable communication equipment. With a built-in 2.5ΩN-channel driver transistor, the CXSU63153A/C/E and CXSU63153A/C/E types provide a step-up operation by using only a coil, a capacitor, and a diode connected externally. larger currents.Output voltage is internally programmable in a range from 1.5V to 7.0V in increments of 100mV (accuracy:±2.5%). Maximum oscillation frequency is set to 100kHz for CXSU63153 series. (At light loads, it is set to 180kHz for the CXSU63153 series.) Options include products equipped with a CE pin (C and D versions) that allows the IC to be shut down thereby reducing supply current and with separated VDD/VOUT pins (E and F versions) to separate the power supply block and the output voltage detect block. With the CXSU63153 series, maximum duty cycle is set to 75% (VDD=3.3V) making it suitable for use with large current operations. The CXSU63153 series automatically switches duty ratio between 56% & 75% (VDD=3.3V) when it senses changes in load to drop output ripple voltage and can support both large and small currents. The external transistor types (B/D/F types) can be provided for applications, which require larger currents.
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五,产品封装图 (Package)
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