CXSU63227 CXSU63228一种升压型DC/DC转换器，专门设计用于驱动高达6个系列的恒流白光LED。LED的串联提供相同的LED电流，从而产生均匀的亮度，并且不需要镇流器电阻器。CXSU63227 CXSU63228的开关频率为1.4MHz，允许使用微小的外部组件。低的0.25V反馈电压可将电流设置电阻器的功率损耗降至最低，从而实现高效率。OVP引脚监测输出电压，并在led打开时关闭转换器。
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产品概述 返回TOP
The CXSU63227 CXSU63228 is a step-up DC/DC converter specifically designed to drive up to 6 series white LEDs with constant current. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminates the need for ballast resistors. The CXSU63227 CXSU63228 switches at 1.4MHz, allowing the use of tiny external components. A low 0.25V feedback voltage minimizes power loss in the current setting resistor for high efficiency. The OVP pin monitors the output voltage and turns off the converter whenever the LEDs are open. The CXSU63227 CXSU63228 is available in low profile SOT-23-6 package.
产品特点 返回TOP
Inherently Matched LED Current
High Efficiency:82%
Drives Up to Six LEDs from 2.2V Supply
20V Over Voltage Protection
Fast 1.4MHz Switching Frequency
Requires Only 1μF Output Capacitors
SOT-23-6 Package
应用范围 返回TOP
Communication equipment
White LED Backlight Display for PDA
Pocket PC
Handheld Devices
Cellular Phones
White LED display backlighting
技术规格书（产品PDF) 返回TOP
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！
产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品......
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DC/DC控制器升压DC |
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产品系列名 |
数据 下载 |
电路 类型 |
输出电 流Maxm A |
输入电 压Max(V) |
输出电 压范围 (V) |
精度 (±%) |
静态电 流uA |
振荡频率(KHz) |
封装形式 |
|
升压DC |
450 |
0.8~6 |
2～6 |
±2% |
10 |
300 |
内置NMOS升压 |
SOT23-3/SOT23-5 /SOT89 |
|
|
升压DC |
外扩 |
0.8~6 |
2～6 |
±2% |
10 |
300 |
外置NMOS升压 |
SOT23-3/SOT89 |
|
|
同步升压 |
800 |
0.8~6 |
2～6 |
±2% |
15 |
300 |
内置NMOS同步升压 |
SOT23-3/SOT23-5 /SOT89 |
|
|
升压DC |
外扩 |
2.5~6 |
ADJ |
±2% |
300 |
500 |
外置NMOS升压 PFM/PWM |
SOT23-5 |
|
|
升压DC |
外扩 |
2.5~6 |
ADJ |
±2% |
300 |
500 |
外置NMOS升压 PFM/PWM |
SOT23-6 |
|
|
异步升压 |
2000 |
2~24 |
ADJ (Max28) |
±2% |
50/200 |
1200 |
内置NMOS升压 PFM/PWM |
SOT23-6 |
|
|
异步升压 |
700 |
2.5~6 |
ADJ (Max20) |
--- |
2000 |
1400 |
白光背光驱动 |
SOT23-6 |
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异步升压 |
1600 |
2.5~5.5 |
ADJ (Max30) |
--- |
150 |
1200 |
白光背光驱动 |
SOT23-6 |
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