CXLE8161是一个电流模式和固定频率升压转换器,集成N-FET驱动多达10个白色LED串联。串联允许LED电流相同,亮度均匀。它的低导通电阻和反馈电压降低了功率损耗,实现了高效率。快速的1MHz电流模式的脉宽调制操作可用于输入和输出电容器和一个小电感,同时最小化输入电源上的纹波。OVP引脚监测输出电压,如果超过过电压阈值,则停止切换。内部软启动电路消除启动过程中的浪涌电流。CXLE8161/A还集成了欠压锁定、过温保护和电流限制电路
 
[ CXLE8161 ]
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产品概述 返回TOP
产品特点 返回TOP
· Wide Input Voltage from 2.5V to 6V
· 0.2V Reference Voltage
· Fixed 1MHz Switching Frequency
· High Efficiency up to 88%
· 100Hz to 200kHz PWM Brightness Control Frequency
· Open-LED Protection
· Under-Voltage Lockout Protection
· Over-Temperature Protection
·<1mA Quiescent Current During Shutdown
· TSOT-23-6A and TDFN2x2-8 Packages
· Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
· White LED Display Backlighting
· Cell Phone and Smart Phone
· PDA, PMP, and MP3
· Digital Camera
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


| Lighting and Display Product > White LED Driver | ||||||||||||
| Part_No | Topology | Archi tecture | Input Voltage (V) | Adj. Output Voltage V | No. of LEDs | LED Current (Max) (A) | Switch Current Limit (A) | Current Sense Voltage (typ)(V) | Switching Frequency (kHz) | Dimming Control | Package | |
| min | max | max | ||||||||||
| Boost | CM | 2.7 | 6 | 32 | 8 | 0.03 | 0.9 | 0.25 | 1000 | Analog | SOT23-6 | |
| Boost | VM | 2.5 | 6 | 19 | 4 | 0.03 | 0.4 | 0.25 | 1000 | Analog PWM | SOT23-6 | |
| Boost | CM | 2.7 | 21 | 30 | 8 | 0.6 | 3.5 | 0.5 | 1200 | Analog | DFN3x3-10 | |
| Charge Pump | - | 2.8 | 4.5 | - | 4 | 0.03 | - | - | 1000 | Analog PWM Digital | QFN4x4-16 | |
| Charge Pump | - | 2.8 | 4.5 | - | 6 | 0.03 | - | - | 1000 | Analog PWM Digital | QFN4x4-16 | |
| Charge Pump | - | 2.8 | 4.5 | - | 4 | 0.03 | - | - | 1000 | Analog PWM Digital | QFN3x3-16 | |
| Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 1.2 | 0.1 | 1000 | Analog PWM | SOT23-6 | |
| Boost | CM | 2.5 | 6 | 39 | 10 | 0.03 | 0.9 | 0.3 | 1000 | Analog PWM | SOT23-6 | |
| Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 1.2 | 0.2 | 1000 | Analog PWM | SOT23-6 | |
| Boost | CM | 2.5 | 6 | 40 | 10 | 0.03 | 1.5 | 0.2 | 600 | Analog PWM | TDFN2x2-6 | |
| Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 2 | 0.2 | 1500 | Analog PWM | SOT23-6 | |
| Buck | CM | 3 | 5.5 | - | SOT23-5 | |||||||
| Boost | CM | 6 | 24 | 65 | 17 | 0.18per string | 3.3 | 0.5 | 200 ~ 900 | External PWM Dimming/I2C | TDFN5x5-16 | |
| Boost | CM | 2.7 | 6 | 40 | 10 | 0.03 | 1.5 | 0.2 | 600 | Analog PWM | TDFN2x2-6 | |
◀ 上一篇:串联驱动2到10个白光LED电流相同亮度均匀的1MHz高效率升压转换器CXLE8160低导通电阻低反馈电压降低了功率损耗实现高效率
下一篇▶:CXLE8162宽频率范围5KHz~100KHz的PWM亮度控制内置功率电流模式和固定频率的600kHz升压变换器场效应管来驱动白光LED
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