CXDC6576降压型DC转换器设计的单片集成电路输出负载电流3A电压型非同步PWM控制150KHz开关频率

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。

                          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 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

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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

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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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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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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