The CXSU6324 is a steep-up converter designed for driving up to 39 white
LEDs(13 strings of 3 LEDs each)from a 5V system rail. The CXSU6324 uses a
current mode,fixed frequency architecture to regulate the LED current ,
which is measured through an external current sense resistor. Its low
101mV feedback voltage reduces power loss and improves sfficiency. The
OV pin monitors the output voltage and turns off converter if an over-voltage
condition is present due to an open circuit condition. The CXSU6324 includes
under-voltage lockout, current limiting and thermal overload protection
preventing damage in the event of output overload.
-
"
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 CXSU6324 is a steep-up converter designed for driving up to 39 white
LEDs(13 strings of 3 LEDs each)from a 5V system rail. The CXSU6324 uses a
current mode,fixed frequency architecture to regulate the LED current ,
which is measured through an external current sense resistor. Its low
101mV feedback voltage reduces power loss and improves sfficiency. The
OV pin monitors the output voltage and turns off converter if an over-voltage
condition is present due to an open circuit condition. The CXSU6324 includes
under-voltage lockout, current limiting and thermal overload protection
preventing damage in the event of output overload. The CXSU6324 is available
in small 6-pin Sot23 or 8-pin QFN (2mm*2mm) package.
二.产品特点
■ 2.5V to 6V Input Voltage Range
■ On Board Power MOSFET
■ Drives up to 39 White LEDs at 5V Input
■ Up to 92% Efficiency
■ Over 1MHz Fixed Switching Frequency
■ Open Load Shutdown
■ Low 104mV Feedback Voltage
■ Soft-Start/PWM Dimming
■ UVLO, Thermal Shutdown
■ Internal 1.3A Current Limit
三.应用范围
■ Cell Phones
■ Handheld Computers and PDAs
■ Digital Still Cameras
■ Small LCD Displays
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
| 系列名称 | 输入电压 (V) | 输出电压 (V) | 最大输出电流 (mA) | 振荡频率 | 封装 | 特点 | |||
| 最小 | 最大 | 最小 | 标准 | 最大 | |||||
| CXSU6324 | 2.5V | 10V | 可调 | 600 | 1.2MHZ | SOT23-6 | PWM异步升压恒流LED驱动：效率85%、（串联8灯或3串7并） | ||
| CXSU6325 | 2.5V | 6V | 可调 | 1300 | 1.3MHZ | QFN8/SOT23-6 | PWM异步升压恒流LED驱动：效率85%、（3串13并） | ||
| CXSU6326 | 2.5V | 10 | 可调 | 300 | 1.2MHZ | SOT23-6 | PWM异步升压恒流LED驱动：效率85%、（串联4灯） | ||
| CXSU6327 | 2.3 | 24 | 2.3 | 可调 | 28 | 1000 | 1.0MHZ | SOT23-6 | PWM异步升压恒流LED驱动：效率85%、（串联5灯） |
| CXSU6323 | 2.7 | 10 | 2.3 | 可调 | 36 | 200 | 1.2MHZ | SOT23-7 | PWM异步升压恒流LED驱动：效率85%、（串联6灯） |
