CXLE8155是一款高功率高效率的升压转换器，集成了30V场效应管，非常适合LCD面板背光应用。30V输出电压允许8个大功率LED串联，3.5A电感电流限制允许更多LED串并联连接。低的0.5V反馈电压在WLED驱动器应用中提供了更高的效率。从2.7V到21V的宽输入范围使CXLE8155成为各种应用（如LCD显示器和便携式设备）的完美解决方案。OVP引脚监测输出电压，以在开路负载和FB引脚短路操作期间保护IC。CXLE8155提供了ALS引脚，以简化与环境光传感器的接口，实现自动调光。
·宽输入电压范围从2.7伏到21伏
·高达3.5A的高电流限制
·0.5V参考电压，系统精度为±3%
·50mW集成N-FET
·固定1.2兆赫开关频率
·效率高达95%
·开放式LED保护
·欠压闭锁保护
·ALS控制输入引脚
·过温保护
·低关断电流：<1毫安
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[ CXLE8155 ]"
目录
7.相关产品
产品概述 返回TOP
The CXLE8155 is the high power and high efficiency boost converter with an integrated 30V FET ideal for LCD panel backlighting applications. 30V output voltage allows for 8 high-power LEDs in series, and 3.5A inductor current limit allows for more LED strings connected in parallel. The low 0.5V feedback voltage offers higher efficiency in WLED driver applications. The wide input range from 2.7V to 21V made CXLE8155 a perfect solution for various applications such as LCD monitor and portable devices. The OVP pin monitors the output voltage to protect IC during open load and FB pin short circuit operations. The CXLE8155 provides the ALS pin to simplify the interface to an ambient light sensor for automatic dimming. The CXLE8155is available in the thermally enhanced DFN-10 lead 3mmx3mm package.
产品特点 返回TOP
· Wide Input Voltage Range from 2.7V to 21V
· High Current-Limit up to 3.5A
· 0.5V Reference Voltage with ±3% System Accuracy
· 50mW Integrated N-FET
· Fixed 1.2MHz Switching Frequency
· High Efficiency up to 95%
· Open-LED Protection
· Under-Voltage Lockout Protection
· ALS Control Input Pin
· Over-Temperature Protection
· Low Shutdown Current:<1mA
· 3mmx3mm DFN-10 Package
· Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
· Display Backlighting
- Automotive
- LCD Monitors
- Notebook Displays
· Portable Displays
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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Lighting and Display Product > White LED Driver |
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Part_No |
Topology |
Archi tecture |
Input Voltage (V) |
Adj. Output Voltage V |
No. of LEDs |
LED Current (Max) (A) |
Switch Current Limit (A) |
Current Sense Voltage (typ)(V) |
Switching Frequency (kHz) |
Dimming Control |
Package |
|
|
min |
max |
max |
||||||||||
|
Boost |
CM |
2.7 |
6 |
32 |
8 |
0.03 |
0.9 |
0.25 |
1000 |
Analog |
SOT23-6 |
|
|
Boost |
VM |
2.5 |
6 |
19 |
4 |
0.03 |
0.4 |
0.25 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.7 |
21 |
30 |
8 |
0.6 |
3.5 |
0.5 |
1200 |
Analog |
DFN3x3-10 |
|
|
Charge Pump |
- |
2.8 |
4.5 |
- |
4 |
0.03 |
- |
- |
1000 |
Analog PWM Digital |
QFN4x4-16 |
|
|
Charge Pump |
- |
2.8 |
4.5 |
- |
6 |
0.03 |
- |
- |
1000 |
Analog PWM Digital |
QFN4x4-16 |
|
|
Charge Pump |
- |
2.8 |
4.5 |
- |
4 |
0.03 |
- |
- |
1000 |
Analog PWM Digital |
QFN3x3-16 |
|
|
Boost |
CM |
2.5 |
6 |
24 |
6 |
0.03 |
1.2 |
0.1 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.5 |
6 |
39 |
10 |
0.03 |
0.9 |
0.3 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.5 |
6 |
24 |
6 |
0.03 |
1.2 |
0.2 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.5 |
6 |
40 |
10 |
0.03 |
1.5 |
0.2 |
600 |
Analog PWM |
TDFN2x2-6 |
|
|
Boost |
CM |
2.5 |
6 |
24 |
6 |
0.03 |
2 |
0.2 |
1500 |
Analog PWM |
SOT23-6 |
|
|
Buck |
CM |
3 |
5.5 |
- |
SOT23-5 |
|||||||
|
Boost |
CM |
6 |
24 |
65 |
17 |
0.18per string |
3.3 |
0.5 |
200 ~ 900 |
External PWM Dimming/I2C |
TDFN5x5-16 |
|
|
Boost |
CM |
2.7 |
6 |
40 |
10 |
0.03 |
1.5 |
0.2 |
600 |
Analog PWM |
TDFN2x2-6 |
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