CXDC6591负载自动切换占空比CMOS PFM控制升压开关DC变换器低纹波高效率和高输出电流内置MOSFET在LX引脚的电压超过极限时被保护电路关闭

CXDC6591系列是CMOS PFM控制升压开关DC/DC变换器。PFM控制器允许根据负载自动切换占空比（轻负载：66%，高输出电流：78%），使产品在宽范围内具有低纹波、高效率和高输出电流。使用CXDC6591，可以使用外部线圈、电容器和二极管配置升压开关DC/DC转换器。内置MOSFET在LX引脚的电压超过极限时被保护电路关闭，以防止其损坏。这一特点，再加上小巧的封装和低电流消耗，使CXDC6591系列成为便携式设备电源单元等应用的理想选择。

                          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）

   5.产品封装      6.电路原理图     7.相关产品

一.产品概述

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  The CXDC6591 Series is CMOS PFM-control step-up switching DC/DC converter. The PFM controller allows the duty ratio to be automatically switched according to the load (light load: 66%, high output current: 78%), enabling products with a low ripple over a wide range, high efficiency, and high output current. With the CXDC6591, a step-up switching DC/DC converter can be configured by using an external coil, capacitor, and diode. The built-in MOSFET is turned off by a protection circuit when the voltage at the LX pin exceeds the limit to prevent it from being damaged. This feature, along with the mini package and low current consumption, makes CXDC6591 Series ideal for applications such as the power supply unit of portable equipment.

二.产品特点

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 z Low voltage operation: Startup at 0.8 V min. (IOUT = 1 mA) guaranteed

 z Duty ratio: 66/78%, built in auto switching type PFM controller

 z External parts: Coil, capacitor, diode

 z Output voltage: Settable to between 1.8V to 6.0 V in 0.1 V steps

 z Accuracy of ±2% z High efficiency：±86%（typ.）

 z Standard function (product type A)

 z Shutdown function (product type C,D)

 z External transistor type available (product type B、D)

三.应用范围

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 z Digital cameras

 z Electronic notebooks and PDAs

 z Portable CD/MD players  

 z Cameras, video equipment,

 z Communications equipment

 z Power supply for microcomputers 

四.技术规格书（产品PDF)

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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

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六.电路原理图

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七.相关芯片选择指南    更多同类产品......

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DC/DC LED驱动
型号	详细说明
CXDC6572	2A同步整流,SOT23-5, 高效率小封装
CXDC6573A	2.2A, ACT4060/MP1410
CXDC6574	3A高效率DC-DC
CXDC6575	超低压差
CXDC6576	36V,3A替代AP1507
CXDC6577	2.5A-3A输出高频高效率高耐压替代MP2490
CXDC6578	3A DC/DC
CXDC6579	high-freq 3A DC/DC
CXDC6580	1.5A DC/DC
CXDC6581	60V高压恒压恒流,替代AP1509,AP1507,XL7005
CXDC6582	60V-30W-恒流-高精度亮度调节
CXDC6583	55V高耐压5A
CXDC6584	90V降压恒压大电流
CXDC6585	85V高耐压MOS内置
CXDC6586	高压600V的恒流LED驱动IC
CXDC6587
CXDC6588
CXDC6589
CXDC6590
CXDC6591
CXDC6592