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CMOS升压开关稳压器由参考电压源振荡电路误差放大器相位补偿电路PWM/PFM开关组成CXSU6344占空比为15%的功率因数调制 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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（PDF文档） 一.产品概述 The CXSU6344 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is applicable to applications requiring high efficiency and high output current. The CXSU6344 series switches its operation to the PFM control circuit whose duty ratio is 15 % with to the PWM/PFM switching control circuit under a light load and to prevent decline in the efficiency by IC operation current. 二.产品特点 Low voltage operation: Start-up is guaranteed from 0.9 V(IOUT =1 mA ) Duty ratio: Built-in PWM/PFM switching control circuit 15 to 78 % . oscillator frequency：300KHz External parts: coil, diode, capacitor, and transistor Output voltage range: 1.5V ~20 V Output voltage accuracy：±2% Soft start function: 2 ms. 三.应用范围 Mobile phones (PDC, GSM, CDMA, IMT200 etc.) Bluetooth equipment PDA Portable communication modem Portable games Cameras Digital cameras Cordless phones Notebook computers 四.技术规格书（产品PDF) 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ 五.产品封装图 六.电路原理图
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发表时间：2020-05-29浏览次数：357
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