CXLE81111是一款集成HB-LED背光驱动程序，可控制4个LED电流通道，用于LCD背光应用，如LCD电视和LCD显示器。CXLE81111能够驱动20毫安到150毫安的白色LED。CXLE81111的4个电压控制电流通道采用2%的电流匹配来补偿LED堆栈中正向电压变化的不均匀效应。为了最小化典型多串操作中的电压余量和功率损耗，CXLE81111监控最高LED正向电压串，并使用其反馈信号进行输出调节。SETI引脚用于编程最大LED电流。通过驱动具有PWM信号的调光管脚，可以实现高对比度的真PWM调光。LED电流与暗管脚占空比成正比。cxl81111具有广泛的保护功能，包括OLP、SLP、OCP、OVP和OTP。
·4个通道
驱动每个通道20毫安至150毫安
·100Hz至25kHz调光频率
·电流模式增压控制器
10V至30V输入电源
·50kHz至2MHz可编程开关频率
外部开关频率同步
·当前匹配2%
·最高Vf串检测调节
·保护：
打开LED保护（OLP）
短路LED保护（SLP）
切换电流保护（OCP）
输出过压保护（OVP）
过热保护（OTP）
TSSOP-20
[ CXLE81111 ]
产品技术资料帮助
查看全部>
7.相关产品
产品概述 返回TOP
产品特点 返回TOP
„ 4 Channels
„ Drive 20mA to 150mA Each Channel
„ 100Hz to 25kHz Dimming Frequency
„ Current Mode Boost Controller
„ 10V to 30V Input Supply
„ 50kHz to 2MHz Programmable Switching Frequency
„ External Switching Frequency Synchronization
„ Current Matching 2%
„ Highest Vf String Detection for Regulation
„ Protections:
Š Open LED Protection (OLP)
Š Short LED Protection (SLP)
Š Switch Over Current Protection (OCP)
Š Output Over Voltage Protection (OVP)
Š Over Temperature Protection (OTP)
„ TSSOP-20 (FD) Package
„ RoHS Compliant
应用范围 返回TOP
„ LCD TV LED Backlighting
„ LCD Monitor LED Backlighting
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
a
|
LED Backlight Driver |
|||||||||
|
Part NO. |
Vin(V) min. |
Vin(V) max. |
CH |
VOUT (max) |
ISW (A) |
FSW (kHz) |
VLED FB(V) |
Note |
Package |
|
2.5 |
5.5 |
1 |
20 |
1.2 |
1000 |
0.1/0.2 / 0.3 |
LX,GND,FB,EN,OVP,VIN,EN Dimming 100~200kHz,6SxP |
TSOT23-6 |
|
|
2.5 |
5.5 |
1 |
40 |
1.2 |
1000 |
0.2 |
LX,GND,FB,EN,OVP,VIN,EN Dimming 100~200kHz |
TSOT23-6 |
|
|
4.2 |
24 |
6 |
40 |
2 |
600 |
1.25 |
30mA/CH,Dimming 100~25kHz,EN,OCP, OVP,PWM/DC/Mixed DimmingMode |
TQFN4X4-20 |
|
|
2.7 |
5.5 |
6 |
40 |
2 |
600 |
1.25 |
30mA/CH,Dimming 100~25kHz,EN,OCP, OVP,PWM/DC/Mixed Dimming Mode |
TQFN4X4-20 |
|
|
2.5 |
20 |
1 |
20 |
1.2 |
1000 |
0.2 |
OVP,FB,DIMC,GND,LX,BP,PWM, EN,PWM Dimming 100~200kHz,6SxP |
TDFN2X2-8 |
|
|
2.5 |
5.5 |
1 |
40 |
1.2 |
1000 |
0.2 |
LX,GND,FB,EN,OVP,VIN,EN Dimming 100~200kHz |
SOT23-6 |
|
|
2.7 |
5.5 |
1 |
28 |
0.85 |
1000 |
0.2 |
LX,GND,FB,EN,OVP,IN |
TDFN2X2-8/SOT-23-6 |
|
|
2.7 |
7 |
1 |
26 |
0.7 |
600 |
0.2*EN Duty |
FB,COMP,GND,LX, EN,VIN,5k~100kHz EN BrightnessControl |
TDFN2X2-6 |
|
|
2.7 |
7 |
1 |
38 |
0.7 |
600 |
0.2*EN Duty |
FB,COMP,GND,LX, EN,VIN,5k~100kHz EN BrightnessControl |
TDFN2X2-6 |
|
|
5 |
24 |
6 |
40 |
2 |
1000 |
1.23 |
30mA/CH,PWM dimming,EN,SS,OCP, OVP,OTP,OLP,SLP |
TQFN3X3-16 |
|
|
3.2 |
24 |
6 |
40 |
2 |
1000 |
1.23 |
30mA/CH,PWM dimming,EN,SS,OCP, OVP,OTP,OLP,SLP |
TQFN3X3-16 |
|
|
5 |
24 |
6 |
50 |
2 |
750 |
1.23 |
30mA/CH, PWM dimming, EN,SS, OCP,OVP,OTP,OLP |
TQFN4X4-20 |
|
|
4.2 |
24 |
8 |
48 |
3 |
1000 |
0.6 |
30mA/CH,PWM dimming,EN,SS,OCP, OVP,OTP,OLP |
TQFN4X4-24 TSSOP20(FD) |
|
|
7 |
18 |
1 |
EXT |
VCS SET |
ADJ |
1.2 |
Programmable ILED, PWM Dimming, Hiccup mode for OVP,SCP |
SOP-16 |
|
|
10 |
30 |
4 |
EXT |
VCS SET |
ADJ |
0.8 |
20mA~150mA/CH, PWM dimming,EN, SS,OCP,OVP,OTP, OLP,SLP |
TSSOP20(FD) |
|
|
7 |
27 |
4 |
EXT |
VCS SET |
ADJ |
1.23 |
Programmable ILED,True PWM& Analog Dimming,Hiccup mode for OVP,OLP, SLP |
TQFN4X4-24 TQFN4X4-28 |
|
|
5 |
28 |
12 |
EXT |
VCS SET |
ADJ |
0.6 |
60mA/CH G5997,120mA/CH G5999 Analog& PWM Dimming,Slope comp.,OCP,UVP,OTP, Hiccup mode for OVP,SLP |
SOP28/TSSOP18(FD)/TQFN5X5-28 |
|
◀ 上一篇:CXLE81110可编程开关频率电流模式控制LED驱动芯片恒定频率下控制单开关PWM转换器脉宽调制调光输入控制占空比从0%到100%频率高达几千赫兹
下一篇▶:LED背光控制器CXLE81112 CXLE81112A大功率电流模式DC升压控制器并行驱动多达4个字符串外部模拟真脉冲宽度调制调光模式DC控制四个串并联配置外部电流检测电阻器和斜率补偿电阻器
|
|||||||||||||||||
