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
[ CXLE8155 ]
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产品概述 返回TOP
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 |
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|
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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