CXDC6576是一个为降压DC/DC转换器设计的单片集成电路，能够在没有外部晶体管的情况下驱动3A负载。由于减少了外部组件的数量，所以可以很容易地节省板空间。外部停机功能可通过逻辑电平控制进入待机状态，内部补偿使反馈控制在无需外部设计的情况下具有良好的线路和负载调节能力。对于保护功能，热关机是为了防止过热操作损坏设备，电流限制是为了防止输出开关的过电流操作。如果出现限流功能，VFB降到0.5V以下，开关频率将降低。CXDC6576系列以150KHz的开关频率工作，因此与低频开关调节器相比，允许更小尺寸的滤波器组件。其他特性包括在规定的输入电压和输出负载条件下，输出电压的保证公差为+4%，振荡器频率的保证公差为+15%。输出版本包括固定的3.3V、5V、12V和可调类型。CXDC6576有5线到252无铅或绿色封装。
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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 CXDC6576 is a monolithic IC designed for a step-down DC/DC converter and is capable of driving a 3A load without an external transistor. Due to reducing the number of external components, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode.The internal compensation makes the feedback control have good line and load regulation without an external design. Regarding the protected function, the thermal shutdown is to prevent over temperature operating from damaging the device, and current limit is against over current operating of the output switch. If the current limit function occurred and VFB is down to 0.5V below, the switching frequency will be reduced. The CXDC6576 series operates at aswitching frequency of 150KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4%tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included a fixed 3.3V, 5V, 12V, and an adjustable type.CXDC6576 is available in a 5-lead TO-252 lead-free or green package.
二.产品特点
Output Voltage: 3.3V, 5V, 12V and Adjustable Output Version
Adjustable Version Output Voltage Range, 1.23V to 15V +4%
150KHz +15% Fixed Switching Frequency
Voltage Mode Non-Synchronous PWM Control
Thermal-Shutdown and Current-Limit Protection
ON/OFF Shutdown Control Input
Operating Voltage can be up to 36V max.
Output Load Current: 3A
Low Power Standby Mode
Built-in Switching Transistor On Chip
三.应用范围
Simple High-Efficiency Step-Down Regulator
On-Card Switching Regulators
Positive to Negative Converter
四.技术规格书（产品PDF)
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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......
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| 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 | |
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下一篇▶:CXDC6577可编程输出电流限制单片降压开关模式转换器2.5A的连续输出电流4.3V至37V输入输出恒定电流和电压
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