CXLE8109是一种高频异步升压转换器。内部MOSFET可支持多达10个白光led用于背光和OLED电源应用，内部软启动功能可减少浪涌电流。该设备以1兆赫固定开关频率运行，以允许小型外部组件，并简化可能的电磁干扰问题。此外，该集成电路还配有46V过电压保护，以允许低电压额定值的廉价小输出电容器。LED电流最初由外部感测电阻器Rs设置。
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[ CXLE8109 ]
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
The CXLE8109 is a high frequency, asynchronous boost converter. The internal MOSFET can support up to 10 White LEDs for backlighting and OLED power application, and the internal soft start function can reduce the inrush current. The device operates with 1-MHz fixed switching frequency to allow small external components and to simplify possible EMI problems. Moreover, the IC comes with 46V over voltage protection to allow inexpensive and small-output capacitors with lower voltage ratings. The LED current is initially set with the external sense resistor Rs.
二.产品特点
VIN Operating Range : 2.5V to 5.5V
Internal Power N-MOSFET Switch
Wide Range for PWM Dimming (100Hz to 200kHz)
1MHz Switching Frequency
Minimize the External Component Counts
Internal Soft Start
Internal Compensation
Under Voltage Protection
Over Voltage Protection
Over Temperature Protection
三.应用范围
Cellular Phones
Digital still cameras
PDAs and Smart Phones and MP3 and OLED.
Probable Instruments
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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◀ 上一篇:CXLE8108 1000KHz的固定开关频率3W大功率白光LED背光驱动电路PWM控制模式的开关型DC升压恒流芯片调节外部电阻恒定在500mA～1A
下一篇▶:CXLE8110高频异步升压变换器MOSFET支持6个系列或3x13个白光led用于背光和OLED电源应用软启动功能可降低浪涌电流外部感测电阻器Rs设置
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