CXLE81104增压转换器包含一个0.7Ω的内部开关。该集成电路以恒定频率1MHz工作，允许使用微型、低成本和低高度的电感和电容器。集成电路的工作电压为2.7伏至5.5伏。使用软启动功能消除启动时的高涌入电流。恒定频率电流模式的PWM结构导致低，可预测的输出噪声。CXL8104包括逐周期的850Ma限流到最大电感电流和过温保护电路。当VOUT超过28V时，将启用过电压保护。LED的电流由FB和GND之间连接的电阻器设置
工作电压：2.7V至5.5V
·高工作频率：1兆赫
·高输出电压：28V
关闭电流：<1μA
·过电压保护
·数字调光控制
内置循环电流限制
·软启动功能
·0.2V低参考电压
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[ CXLE81104 ]
目录
7.相关产品
产品概述 返回TOP
The CXLE81104 boost converter contains a 0.7Ω internal switch. The IC operates at constant frequency 1MHz, allowing the use of tiny, low cost and low height inductors and capacitors. The IC operates from a 2.7V to 5.5V supply voltage. High inrush current at start-up is eliminated using the soft-start function. Constant frequency current mode PWM architecture results in low, predictable output noise. The CXLE81104 includes cycle-by-cycle 850mA current limiting to maximum inductor current and over-temperature protection circuit. The over-voltage protection will be enabled when VOUT exceeds 28V. The current of LED is set by a resistor connected between FB and GND. The CXLE81104 is available in SOT-23-6 & TDFN2X2-8 package.
产品特点 返回TOP
Operating Voltage：2.7V to 5.5V
„ High Operating Frequency：1MHz
„ High Output Voltage：28V
„ Shutdown Current：<1μA
„ Over-Voltage Protection
„ Digital Dimming Control
„ Built-in Cycle-by-Cycle Current-Limiting
„ Soft-Start Function
„ 0.2V Low Reference Voltage
„ SOT-23-6 & TDFN2X2-8 Package
应用范围 返回TOP
„ LED Module
„ Compact Back Light Module
„ Constant Current Source
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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LED Backlight Driver |
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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 |
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