CXLE81102升压转换器驱动恒流白色LED,为手机、PDA和其他手持设备提供背光。它的特点是允许白色发光二极管串联,以便发光二极管电流相同,亮度均匀。一个使能输入可以反复脉冲调整LED的亮度。快速1.0兆赫电流模式的PWM控制允许更小的电容和电感。故障状态保护采用逐周期电流限制,以检测最大电感电流、热保护和过电压保护。还包括软启动消除启动过程中的涌流。低参考电压使电流整定电阻器的功率损耗最小化。CXLE81102有TDFN2x2-8软件包
工作电压:2.5V至20V。
·高工作频率:1兆赫
·高输出电压:高达20V(典型值)
·数字调光控制。
·内置循环电流限制。
内置软启动功能。
·0.2V低参考电压
热过载保护
 
[ CXLE81102 ]
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产品概述 返回TOP
产品特点 返回TOP
„ Operating Voltage: 2.5V to 20V.
„ High Operating Frequency: 1MHz
„ High Output Voltage: Up to 20V(Typ.)
„ Digital Dimming Control.
„ Built-in Cycle-by Cycle Current-Limiting.
„ Built-in Soft-Start Function.
„ 0.2V Low Reference Voltage
„ Thermal Overload Protection
„ Thin 8-Lead 2x2 TDFN Packages
应用范围 返回TOP
GPS Navigation System
Compact Back Light Module
Constant Current Source
LED Module
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产品封装图 返回TOP

电路原理图 返回TOP

| 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 | |
| CXLE81107L | 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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