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每20毫安驱动6个LED通道电流源和自动模式选择电荷泵高性能白光LED驱动器低漏失电流源CXLE8182单线接口16步亮度控制内部软启动限制浪涌电流低输入纹波和低EMI
| 产品型号： | CXLE8182 |
| 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： | 49 次 |
产品简介
CXLE8182最多支持6个白色LED，并调节一个恒定电流，初始值可由内部电阻器设置。该部分实现了4位DAC，用于亮度控制。用户可以通过串行脉冲轻松配置1.25毫安到20毫安的LED电流。通过向EN/SET引脚施加脉冲信号，可以实现白光led电流的调光。用户可设置16级电流。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。
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) | 210 |
| SHDN Iq(μA) | 1 |
| Dimming | One-Wire |
产品详细介绍
目录
7.相关产品
产品概述 返回TOP
The CXLE8182 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 CXLE8182 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 a 4-bit DAC for brightness control. Users can easily configure the LED current from 1.25mA to 20mA by a serial pulse. The dimming of white LEDs current can be achieved by applying a pulse signal to the EN/SET pin. There are totally 16 steps of current could be set by users. 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 CXLE8182 is available in Green TQFN-3×3-16L package and is rated over the -40℃ to +85℃ temperature range.
产品特点 返回TOP
• Input Voltage Range: 2.7V to 5.5V
• Drives Up to 6 LEDs at 20mA Each
• One Single Wire Interface
• 16-Step Brightness Control
• High Efficiency by Fractional Conversion with
1× and 1.5× Modes
• Switching Frequency: 1MHz
• Regulated Output Current with ±5% 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
相关芯片选择指南 返回TOP 更多同类产品......
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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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