CXLE8187是一款多功能恒流LED驱动器，具有高效的升压转换器结构。该器件集成了低功耗MOSFET，显著缩小了PCB的整体布局面积，减少了外部元件的总数。独特的技术和高1.6A电流限制允许CXLE8187驱动高达38V的输出（10个LED串联）。或者，CXLE8187可以提供260毫安的总电流，每串3个系列LED。它还可以最大限度地提高电流能力，同时实现高转换效率。优化后的600kHz开关频率降低了传导损耗，减小了外部元件尺寸。集成数字PWM调光接口，调节LED电流。脉宽调制频率在2kHz到60kHz之间。
CXLE8187内置了各种保护功能，包括逐周输入电流限制保护、开路LED（输出过电压）保护和热关机保护。关闭模式下的泄漏电流小于1μA。
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[ CXLE8187 ]
目录
7.相关产品
产品概述 返回TOP
The CXLE8187 is a versatile constant current LED driver with a high efficiency step-up converter architecture. The low-side power MOSFET is integrated in the device, significantly shrinking the overall PCB layout area and minimizing the total number of external components. Unique technology and high 1.6A current limit allow CXLE8187 to drive up to 38V output (10 LEDs in series). Alternatively, CXLE8187 can deliver 260mA total current with 3 series LEDs per string. It can also maximize the current capability while achieving high conversion efficiency. The optimized 600kHz switching frequency results in reduced conduction loss and small external component size. Digital PWM dimming interface is integrated to adjust LED current. The PWM frequency is in the range from 2kHz to 60kHz.Various protection features are built into the CXLE8187, including cycle-by-cycle input current limit protection, open LED (output over-voltage) protection and thermal shutdown protection. The leakage current in shutdown mode is less than 1μA.The CXLE8187 is available in Green TSOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Wide Output Range: Up to 10 Series LEDs
• Integrated 40V High Current Switch (1.6A Limit)
• 2.7V to 5.5V Input Voltage Range
• High Efficiency PWM Converter
• Low 300mV Feedback Voltage
• 500kΩ Pull-Low Resistor on CTRL Pin
• 2kHz to 60kHz PWM Dimming Frequency
• 38V Open LED Protection
• 600kHz Switching Frequency
• Integrated Soft-Start Function
• Less than 1μA Shutdown Current
• Simple, Small Solution Size
• -40℃ to +85℃ Temperature Range
• Available in Green TSOT-23-6 Package
应用范围 返回TOP
LED Backlighting
Mobile Phones
Handheld Devices
Digital Photo Frames
Automotive Navigation
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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白光LED驱动器 |
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Product |
LED Connection |
CH |
Iq(μA) |
SHDN Iq(μA) |
Dimming |
Package |
|
CXLE8196 |
Common Anode |
1 |
60 |
1 |
PWM |
SOT-23-6 |
|
Common Anode |
4 |
100 |
1 |
PWM |
TQFN-3x3-16L |
|
|
Common Anode |
3 |
100 |
1 |
PWM |
TQFN-3x3-16L |
|
|
Common Anode |
4 |
240 |
1 |
PWM |
SOT-23-6 |
|
|
Common Anode |
4 |
100 |
1 |
One-Wire |
TQFN-3x3-16L |
|
|
Common Anode |
4 |
550 |
5 |
One-Wire |
TQFN-3x3-16L TDFN-2x2-8L MSOP-8 |
|
|
Common Cathode |
4 |
300 |
10 |
One-Wire |
TQFN-3x3-16L |
|
|
Common Anode |
6 |
210 |
1 |
One-Wire |
TQFN-3x3-16L |
|
|
Common Cathode |
6 |
300 |
10 |
One-Wire |
TQFN-4x4-16L |
|
|
Common Anode |
6 |
155 |
2.5@VIN =4.2V |
PWM |
TQFN-3x3-16L |
|
|
Common Anode |
8 |
155 |
2.5@VIN = 4.2V |
PWM |
TQFN-3x3-20L |
|
|
Common Anode |
8 |
155 |
2.5@VIN =4.2V |
One-Wire |
TQFN-3x3-20L |
|
|
Common Anode |
1 |
200 |
1 |
PWM |
TSOT-23-6 |
|
|
Common Anode |
1 |
200 |
1 |
One-Wire |
TSOT-23-6 |
|
|
Common Anode |
1 |
400 |
1 |
PWM |
TDFN-2x2-6L TSOT-23-6 |
|
|
Common Anode |
1 |
45 |
1 |
One-Wire |
TDFN-2x2-8L |
|
|
Common Anode |
1 |
200 |
1 |
PWM |
TSOT-23-6 |
|
|
Common Anode |
1 |
400 |
1 |
PWM |
TDFN-2x2-6L TSOT-23-6 |
|
|
Common Anode |
1 |
200 |
1 |
One-Wire |
TDFN-2x2-8L |
|
|
Common Anode |
1 |
200 |
1 |
PWM |
TDFN-2x2-8L |
|
|
Common Anode |
1 |
220 |
1 |
PWM |
TDFN-2x2-6L |
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◀ 上一篇:CXLE8186高性能的白色LED驱动程序电流源和自动模式选择1×/1.5×分数电荷泵和低漏电流源支持8个白色LED并调节恒定电流内部电阻器设置4位DAC用于亮度控制
下一篇▶:CXLE8188单线调光接口驱动38V输出10个LED串联多功能恒流LED驱动器高效的升压高效的PWM转换器结构2.7V至5.5V输入电压软启动功能
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