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CXLE8184高性能的6个白色LED并调节恒定电流驱动程序电流源和自动模式选择电荷泵PWM调光来调节LED的亮度低输入纹波和低EMI过流和过温保护带滞后的欠压锁定
| 产品型号： | CXLE8184 |
| 产品类型： | 背光驱动 |
| 产品系列： | 电荷泵型LED背光 |
| 产品状态： | 量产 |
| 浏览次数： | 47 次 |
产品简介
CXLE8184支持多达6个白色LED并调节恒定电流，初始值可由内部电阻器设置。该部分采用PWM调光来调节LED的亮度。用户可以通过数字PWM信号轻松配置从0mA到27mA的LED电流。CXLE8184可通过EN引脚关闭。工作电压范围为2.7V～5.5V，内部软启动电路有效地降低了启动和模式转换时的涌入电流。
•输入电压范围：2.7V至5.5V
•驱动高达6个LED，每个27毫安
•脉宽调制调光
•通过分数转换实现高效
1×和1.5×模式
•开关频率：0.93MHz
•调节输出电流，匹配度为±4.8%
•内部软启动限制浪涌电流
•低输入纹波和低EMI
•过流和过温保护
•带滞后的欠压锁定
技术参数
| 输入电压范围 (VIN) | ≤ 2.8~4.5VV |
|---|---|
| 输出电压 (VOUT) | 60VV |
| 输出电流 (IOUT) | 2.5AA |
| 工作频率 | 1000kHzHz |
| 转换效率 | 93%% |
| 封装类型 | TQFN-3x3-16L |
| Led count | 4 |
| Dimming method | PWM调光 |
| Dimming ratio | 1000:1 |
| Protection | OVP/OCP/OTP |
| Features | Charge Pump |
| Efficiency | .92 |
| Pwm frequency | 20kHz |
| Application type | 背光驱动 |
| LED Connection | Common Anode |
| CH | 6 |
| Iq(μA) | 155 |
| SHDN Iq(μA) | 2.5@VIN =4.2V |
| Dimming | PWM |
产品详细介绍
目录
7.相关产品
产品概述 返回TOP
The CXLE8184 is a high performance white LED driver. It integrates current sources and automatic mode selection charge pump. The part maintains the high efficiency by utilizing a 1×/1.5× fractional charge pump and low dropout current sources. The small equivalent 1× mode open loop resistance and ultra-low dropout voltage of current source extend the operating time of 1× mode and optimize the efficiency of Li-ion battery in white LED applications.The CXLE8184 supports up to 6 white LEDs and regulates a constant current which the initial value can be set by an internal resistor. The part implements PWM dimming to adjust the brightness of LED. Users can easily configure the LED current from 0mA to 27mA by a digital PWM signal. CXLE8184 can be turned off by EN pin. The operating voltage range is 2.7V to 5.5V. Internal soft-start circuitry effectively reduces the in-rush current while both start-up and mode transition.The CXLE8184 is available in Green TQFN-3×3-16L package and is rated over the -40°C to +85°C temperature range.
产品特点 返回TOP
• Input Voltage Range: 2.7V to 5.5V
• Drives up to 6 LEDs at 27mA Each
• PWM Dimming
• High Efficiency by Fractional Conversion with
1× and 1.5× Modes
• Switching Frequency: 0.93MHz
• Regulated Output Current with ±4.8% Matching
• Internal Soft-Start Limits Inrush Current
• Low Input Ripple and Low EMI
• Over-Current and Over-Temperature Protection
• Under-Voltage Lockout with Hysteresis
• Available in Green TQFN-3×3-16L Package
应用范围 返回TOP
Mobile Phone, DSC, MP3
White LED Backlighting
LCD Display Supply
技术规格书（产品PDF) 返回TOP
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！
产品封装图 返回TOP
电路原理图 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 |
|
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Common Anode |
3 |
100 |
1 |
PWM |
TQFN-3x3-16L |
|
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Common Anode |
4 |
240 |
1 |
PWM |
SOT-23-6 |
|
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Common Anode |
4 |
100 |
1 |
One-Wire |
TQFN-3x3-16L |
|
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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 |
|
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Common Anode |
8 |
155 |
2.5@VIN = 4.2V |
PWM |
TQFN-3x3-20L |
|
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Common Anode |
8 |
155 |
2.5@VIN =4.2V |
One-Wire |
TQFN-3x3-20L |
|
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Common Anode |
1 |
200 |
1 |
PWM |
TSOT-23-6 |
|
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Common Anode |
1 |
200 |
1 |
One-Wire |
TSOT-23-6 |
|
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Common Anode |
1 |
400 |
1 |
PWM |
TDFN-2x2-6L TSOT-23-6 |
|
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Common Anode |
1 |
45 |
1 |
One-Wire |
TDFN-2x2-8L |
|
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Common Anode |
1 |
200 |
1 |
PWM |
TSOT-23-6 |
|
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Common Anode |
1 |
400 |
1 |
PWM |
TDFN-2x2-6L TSOT-23-6 |
|
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Common Anode |
1 |
200 |
1 |
One-Wire |
TDFN-2x2-8L |
|
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Common Anode |
1 |
200 |
1 |
PWM |
TDFN-2x2-8L |
|
|
Common Anode |
1 |
220 |
1 |
PWM |
TDFN-2x2-6L |
|
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