CXLE87158是一个电流模式单片LED驱动器。LED电流可以通过模拟输入电压控制。通过高侧LED电流感应，CXLE87158可以配置为降压、升压或降压升压拓扑，以满足不同的LED驱动器需求。集成的44V/2A N沟道mosfet保证了高效率的工作。在轻负载下，CXLE87158在低频下工作，以保持高效率和低输出纹波。SW引脚上的过压锁定保护可防止CXLE87158出现LED开路故障。CXLE87158在140摄氏度时也有热保护。
4.6V至44V工作输入范围2A峰值开关电流
模拟调光和脉宽调制调光
恒定关闭时间操作
开关过电压锁定
热保护
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[ CXLE87158 ]
目录
7.相关产品
产品概述 返回TOP
The CXLE87158 is a current mode monolithic LED driver. The LED current can be controlled with an analog input voltage. With high-side LED current sensing, the CXLE87158 can be configured as buck, boost or buck-boost topology to serve different LED driver need. The integrated 44V/2A N-Channel MOSFETs ensures high efficiency operation. At light loads, CXLE87158 operates in low frequency to maintain high efficiency and low output ripple. The overvoltage lockout protection on SW pin protects CXLE87158 from open LED fault. CXLE87158 also has thermal protection at 140oC. The CXLE87158 is available in a 6-pin SOT23-6and a 8-pin ESOP8 package, which provides a compact solution with minimal external components.
产品特点 返回TOP
4.6V to 44V operating input range 2A peak switch current
Analog dimming and PWM dimming
Constant off-time operation
SW over voltage lockout
Thermal protection
Available in SOT23-6and ESOP8 package
应用范围 返回TOP
LED Driver
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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产品型号 |
封装 |
拓扑 |
频率 |
输入 |
调光 |
过流保护 |
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Vin(V) |
Iout(A) |
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ESOP8 SOT23-6 |
Buck, Boost |
Constant 2us toff |
4.6~44 |
2A peak |
PWM/Analog |
Y |
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SOT23-6 |
Buck |
1MHz |
3.8~24 |
2A |
PWM/Analog |
Y |
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SOT23-6 |
Buck |
Constant 2us toff |
4.6~30 |
2A peak |
PWM/Analog |
Y |
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SOT23-6 |
Buck |
1MHz |
4.5~28 |
1.2A |
PWM/Analog |
Y |
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下一篇▶:CXLE87161模拟调光模式和脉冲宽度调制信号合并到一个控制管脚上模拟调光模式电流模式单片降压LED驱动器4.5V-28V的输入N通道MOSFET提供1.2A的连续输出电流启动电流失控保护
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