CXLE8125B是一种高效的升压转换器，内部有集成40V功率MOSEFT。它以最佳的0.8MHz频率运行能够使用小的外部组件，同时仍然提供最好的效率。它的内部电流限制高达1A，可以驱动
在50毫安的输出电流下最多10个发光二极管。合并的25-100KHz真利用EN-pin的PWM调光特性可以对LED电流。为了最大限度地保护，CXL8125B具有内部在38V时提供过电压保护，以防止LED出现时芯片损坏字符串未连接到输出。
效率高达91%（6个LED）
驱动多达10个50毫安的LED
总共驱动多达40个LED
38V过电压保护
PWM亮度控制
200mV反馈电压
1A电流限制
[ CXLE8125B ]
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目录 1.产品概述 2.产品特点 一,产品概述(General Description) The CXLE8125B is a high efficiency step-up converter with an internally integrated 40V power MOSEFT. It runs with an optimal 0.8MHz frequency that enables use of small external components while still providing best efficiencies. It has an internal current limit as high as 1A, and it can drive up to 10 LEDs at 50mA output current. The incorporated 25-100KHz true PWM-Dimming feature by EN pin can be used to digitally program the LED current. For maximum protection, the CXLE8125B has an internal OVP protection at 38V to prevent the chip from damages when the LED string is not connected to the output. CXLE8125B is available in a space-saving SOT23-6 package. 四,产品PDF文档 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 (Package)
六.电路原理图
七,功能概述 The CXLE8125B is a high efficiency boost LED driver with a small package size. The device is ideal for driving 2-25LEDs for backlight application in smartphone and 7-inch tablet PC. The device integrates a 38V/1A switch FET and operates in pulse width modulation (PWM) with a 0.8MHz fixed switching frequency. For operation details, please check the block diagram in the “Block Diagram” chapter. The duty cycle of the converter is set by the error amplifier output and the current signal applied to the PWM control comparator. The feedback loop regulates the FB pin to a low reference voltage (200mV typical), reducing the power dissipation in the current sense resistor. 八,相关产品 更多同类产品....... |
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型号 |
工作模式 |
工作电 压范围 |
过压保 护电压 |
反馈电压 |
开关电 流限制 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
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PWM |
2.5V-10V |
29V |
0.1V |
320mA |
85% |
0.1uA |
1.3MHz |
PWM |
SOT-25 |
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PWM |
2.2V-6.0V |
17V |
0.25V |
400mA |
82% |
3mA |
1.4MHz |
PWM |
100Hz-1KHz |
SOT-26 |
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型号 |
工作模式 |
工作电 压范围 |
过压保 护电压 |
反馈电压 |
开关电 流限制 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
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PWM |
2.2V-6.0V |
17V |
0.25V |
700mA |
82% |
3mA |
1.4MHz |
PWM |
100Hz-1KHz |
SOT-26 |
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PWM |
2.5V-6.0V |
23V |
0.25V |
1.0A |
88% |
0.4mA |
1.0MHz |
PWM |
100Hz-10KHz |
SOT-26 |
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PWM |
2.5V-6.0V |
30V |
0.104V |
400mA |
87% |
0.2mA |
1.2MHz |
PWM |
小于1KHz |
SOT-26 |
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PWM |
2.7V-6.0V |
38V |
0.2V |
1A |
91% |
5uA |
0.8MHz |
PWM |
SOT-26 |
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PWM |
2.7V-6.0V |
37V |
0.3V |
900mA |
90% |
0.28mA |
0.9MHz |
PWM |
100Hz-200KHz |
SOT-26 |
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PWM |
2.5V-6.0V |
28V |
0.1V/0.25V /0.3V |
1.5A |
90% |
0.1uA |
1.2MHz |
PWM |
20KHz-1MHz |
SOT-26 |
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PWM |
3.0V-25V |
28V |
0.2V |
2A |
90% |
1uA |
1.2MHz |
PWM |
20KHz-1MHz |
SOT-26 |
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PWM |
2.7V-6.5V |
22V |
0.2V |
2.8A |
95% |
5uA |
1MHz |
PWM |
SOT-26 |
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PWM |
3.0V-6.0V |
24V |
0.2V |
2.5A |
88% |
1uA |
1.2MHz |
PWM |
10KHz-100KHz |
SOT-26 |
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型号 |
工作模式 |
工作电 压范围 |
过压保 护电压 |
反馈电压 |
开关电 流限制 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
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PWM |
2.2V-6V |
26V |
0.2V |
3A |
100uA |
800KHz |
PWM |
SOP-8 |
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PWM |
2.2V-6V |
27V |
0.2V |
3A |
100uA |
800KHz |
PWM |
DFN3*3-8 |
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PWM |
10V-35V |
200V |
0.2V |
扩流 |
400uA |
200KHz |
PWM |
SOP-8 |
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PWM |
3.6V-26V |
32V |
0.22V |
2A |
92% |
400KHz |
PWM |
SOP-8 |
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PWM |
3.6V-26V |
60V |
0.22V |
2A |
92% |
400KHz |
PWM |
SOP-8 |
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PWM |
5.0V-45V |
60V |
0.22V |
2A |
93% |
400KHz |
PWM |
SOP-8 |
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PWM |
3.6V-36V |
60V |
0.22V |
4A |
94% |
180KHz |
PWM |
TO252-5L |
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PWM |
5.0V-36V |
60V |
0.22V |
5A |
94% |
180KHz |
PWM |
TO263-5L |
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型号 |
工作模式 |
工作电 压范围 |
过压 保护电压 |
反馈电压 |
开关 电流限制 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
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PWM |
2.7V-16V |
36V |
0.2V |
340mA |
81% |
3.2uA |
1.2MHz |
PWM |
SOT-26 |
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