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。
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[ 产品资料下载 ]
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 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
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
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)
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
七.相关芯片选择指南 更多同类产品......
| 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 | |
◀ 上一篇:CXDC6590高效率的电流模式同步降压型脉宽调制DC稳压器低RDS同步开关降低了导通损耗0.6V精密反馈参考电压100%占空比
下一篇▶:4.75V至23V输入电压CXDC6592电流模式降压DC转换器380kHz开关频率2A输出电流效率92%循环电流限制热关机DSL和电缆调制解调器及路由器
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