Cxle8111 is an inductive step-down converter working in continuous mode. It can use a power supply with higher voltage than led to drive one or several LEDs in series. Cxle8111 can use 6v-36v power supply and realize 1A maximum current through external adjustable resistor. With proper power supply and peripheral devices, the maximum output power of cxle8111 can reach 30W. The cxle8111 circuit includes a built-in switch and a high side current detection circuit, which can use the external resistance to set the average output current. By controlling the Vset pin, the output current can be adjusted below the set value. The Vset pin can be controlled with a DC or PWM signal. The soft start time can be increased by connecting the external capacitance to the ground of Vset pin. When Vset voltage is lower than 0.2V, turn off the switch and the device will enter the standby state of low power consumption
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[ CXLE8111 ]"
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
CXLE8111是一款工作于连续模式的电感降压转换器，可以使用比LED电压高的电源，来驱动一个或 数个串联的LED。CXLE8111可以使用6V-36V的电源， 并通过外置可调电阻，最大实现1A的电流。设置合适的电源和外围器件，CXLE8111最大输出功率可以达到30W。CXLE8111电路包括内置开关和高侧电流检测电路，可以利用外置电阻来设置平均输出电流。通过控制VSET管脚，可以调节输出电流低于设定值。 VSET管脚可以使用DC或者PWM信号来控制。可以通过在VSET管脚对地接入外置电容，实现增加软启 动时间。当VSET电压低于0.2v，关断开关，器件进入低功耗的待机状态。
二.产品特点
简单外围器件
内置40V NDMOS 开关
最大1A输出电流
VSET单管脚实现开/关和亮度控制，可使用DC或 PWM信号
软启动
高效率 (最高97%)
宽恕如电压范围: 6V 到 36V
LED 开路保护
LED短路保护
最高1MHz开关频率
5% 输出精度
三.应用范围
低压可替换灯泡
低压工业照明
LED 背光
四.技术规格书（产品PDF)
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！
五.产品封装图
六.电路原理图
七.相关芯片选择指南 更多同类产品......
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LED Backlight Driver(LED背光驱动电路) |
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Part Number |
MODE |
VIN |
IOUT |
FOSC |
Accu |
Eff. |
VFB(Max) |
Package |
|
PFM |
0.9-6.5V |
0-500mA |
300K |
±10% |
82% |
200±20/ |
SOT89-5 |
|
|
PWM |
0.9-6.5V |
500-1000mA |
1M |
±10% |
90% |
95±10 |
SOT23-6 |
|
|
PWM |
2.5-5.5V |
20mA |
1 M |
±5% |
85% |
200±10 |
TSOT23-6/SOT23-6 |
|
|
PWM |
2.5-5.5V |
20mA |
1 M |
±5% |
85% |
200±10 |
TSOT23-6/SOT23-6 |
|
|
PFM |
6-40V |
1000mA |
1 M |
±5% |
97% |
100±5 |
SOT89-5 |
|
|
PWM |
2.5-5.5V |
120mA |
1 M |
±5% |
88% |
200±10 |
TSOT23-6/SOT23-6 |
|
|
Applications：①Step-up converter to drive white-LED②Constant current output③LED Backlight ④Step-down converter to drive white-LED★CXLE8109 OVP=46V, CXLE8110 OVP=26V ★CXLE8111 Step-down converter to drive white-LED |
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