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
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产品封装图 返回TOP


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| Lighting and Display Product > White LED Driver | ||||||||||||
| 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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