CXDC6581是专为降压式LED驱动器设计的单片集成电路,能够在不增加晶体管的情况下驱动1.8A-3.3A负载。输入电压范围可达60V,反馈电压为200mV。芯片的工作频率为52kHz。外部关闭功能由开/关引脚上的逻辑电平控制,然后电路进入待机模式,ISTBY~50μa(典型值)。开/关引脚可用于模拟调光。当开关管脚上的电压从0.07V增加到0.67V时,FB管脚上的电压从200mV下降到0。自保护功能包括逐周电流限制和热保护。CXDC6581有标准的TO-263、TO252和PSOP-8,带有电源板组件
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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
CXDC6581 is the monolithic IC designed for step-down LED driver capable of driving 1.8A-3.3A load without additional transistor. The input voltage range is up to 60V. Its feedback voltage, VFB, is 200mV. The chip operates at a switching frequency of 52kHz. The external shutdown function is controlled by a logic level on the ON/OFF pin and then the circuit comes into the standby mode with ISTBY~50μA (typ.). The ON/OFF pin may be used for the analog dimming. As the voltage on the ON/OFF pin is increased from 0.07V to 0.67V, the voltage on the FB pin falls from 200mV to 0. The self-protection features include a cycle-by-cycle current limit and a thermal protection. CXDC6581 is available in standard TO-263,TO252 and PSOP-8 with power pad package.
二.产品特点
DC/DC LED driver applications
Backlighting for flat panel displays
General purpose constant current source
52KHZ,no noise to Automotive-CAR audio
Chargers
三.应用范围
VIN Max = 60V
VFB = 200mV, Iq < 3mA
ILED up to 3.5A with TO263-5L
ILED up to 2.1A with PSOP-8L
ILED up to 2.8A with TO-252-5L
On/Off input may be used for the Analog Dimming , low=ON Thermal protection
Cycle-by-cycle current limit
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......
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 |