CXLE8192采用40V额定集成开关FET，是一个串联驱动LED的升压转换器。boost转换器以600kHz的固定开关频率运行，以减少输出纹波，提高转换效率，并允许使用小型外部组件。
默认的白色LED电流由外部传感器电阻RSET设置，反馈电压调节为200mV，如典型应用所示。在工作过程中，LED电流可以通过控制引脚利用PWM信号进行控制。脉冲宽度调制（PWM）信号的占空比决定反馈参考电压。在脉宽调制模式下，CXLE8192不会使LED电流爆裂；因此，它不会在输出电容器上产生可听的噪音。为了最大限度地保护，该器件具有集成的开放式LED保护，禁用CXEL8192，以防止输出电压超过IC在开放的LED条件下绝对最大额定电压。
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[ CXLE8192 ]
目录
7.相关产品
产品概述 返回TOP
With a 40V rated integrated switch FET, the CXLE8192 is a boost converter that drives LEDs in series. The boost converter runs at 600kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.The default white LED current is set with the external sensor resistor RSET, and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, the LED current can be controlled using PWM signal through the CTRL pin. The duty cycle of pulse width modulation (PWM) signal determines the feedback reference voltage. In PWM mode, the CXLE8192 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the CXLE8192 to prevent the output voltage from exceeding the IC’s absolute maximum voltage ratings during open LED conditions.The CXLE8192 is available in Green TDFN-2×2-6L and TSOT-23-6 packages. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Input Voltage Range: 2.7V to 20V
• 38V Open LED Protection
• 200mV Reference Voltage
• 500kΩ Pull-Low Resistor on CTRL Pin
• PWM Brightness Control
• 1kHz to 100kHz PWM Dimming Frequency Range
• Soft-Start Function
• Up to 90% Efficiency
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TDFN-2×2-6L and TSOT-23-6
Packages
应用范围 返回TOP
Cellular Phones
Portable Media Players
Ultra Mobile Devices
GPS Receivers
White LED Backlighting for Media Form Factor Display
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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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 |
|
◀ 上一篇:CXLE8191多功能恒流LED驱动器高效的升压转换器结构驱动高达38V的输出10个LED串联2.7V至5.5V输入电压260毫安的总电流每串3个系列LED
下一篇▶:CXLE8193多功能恒流LED驱动器高效的升压转换器结构高效的PWM转换器低200毫伏反馈电压单线调光接口38V开放式LED保护宽输出范围最多10个串联LED
