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CXLE8178内部电阻器为四个LED设置偏置电流30毫安时低50毫伏电压降2.5V至5.5V电源电压LED显示背光驱动器 照相机闪光灯的LED
| 产品型号： | CXLE8178 |
| 产品类型： | 背光驱动 |
| 产品系列： | 白灯背光驱动IC |
| 产品状态： | 量产 |
| 浏览次数： | 46 次 |
产品简介
CXLE8178使用一个内部电阻器为四个LED设置偏置电流，其匹配度为±5%。与镇流器电阻器相比，CXLE8178的优点包括：随电源电压变化的偏置变化小得多，显著降低了漏失电压，在某些应用中，显著提高了效率。
CXLE8178只需要在30毫安负载下为每个输出提供50毫伏的电压降，以匹配LED亮度。
技术参数
| 输出电流 (IOUT) | 2.5AA |
|---|---|
| 工作频率 | 1000kHzHz |
| 转换效率 | 93%% |
| 封装类型 | SOT-23-6 |
| Topology | 白灯背光驱动IC |
| Dimming ratio | 1000:1 |
| Protection | 过压过流保护 |
| Features | Common Anode |
| Efficiency | 93 |
| Pwm frequency | 100Hz-1KHz |
| Application type | 背光驱动 |
| CH | 4 |
| Iq(μA) | 240 |
| SHDN Iq(μA) | 1 |
| Dimming | PWM |
产品详细介绍
目录
7.相关产品
产品概述 返回TOP
The CXLE8178 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. It is optimized for low power keypad and portable backlighting applications.The CXLE8178 uses an internal resistor to set the bias current for four LEDs, which are matched to ±5%. The CXLE8178's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency.The CXLE8178 requires only a 50mV dropout voltage at a 30mA load on each output to match the LED brightness.The CXLE8178 is available in Green SOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Support up to 4 LEDs
• Low 50mV Dropout at 30mA
• Less than ±5% LED Current Matching
• Simple LED Brightness Control
• Low Shutdown Current
• 2.5V to 5.5V Supply Voltage Range
• Thermal Shutdown Protection
• Operating Temperature Range: -40℃ to +85℃
• Available in Green SOT-23-6 Package
应用范围 返回TOP
Wireless Handsets
MP3, MP4, and PMP
Cellular Phones
Portable Communication Devices
Digital Cameras, Camcorders
PDAs, Palmtops, and Handy Terminals
LED/Display Back Light Driver
LEDs for Camera Flash
Battery-Powered Equipment
技术规格书（产品PDF) 返回TOP
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产品封装图 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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