产品概述 返回TOPQDl嘉泰姆
CXLE88130是一款2MHz固定工作频率电流模式同步升压转换器,此器件能为LED闪光灯提供双通道750mA恒流驱动。CXLE88130内置I2C总线接口,通过I2C控制接口可以实现对Movie-Mode的开启和关断,并设置其电流大小。另外,CXLE88130也可以分别控制2通道LED开启/关断,并调整其最长闪光时间(FTO)。通过同一外接电阻可以设定Flash模式和Movie模式最大电流,二者的比例比例默认为6.1:1。CXLE88130集成列过压保护和过流保护,可分别对LED开路和LED下端短路进行保护。此芯片在关断时静态电流<1.0uA。The CXLE88130 is a 2MHz fixed frequency, current mode
synchronous boost converter. The device is designed to
operate as a dual 750mA (1.5A total) constant current
driver for flash white LED application.
An industry-standard I2C serial digital input is used to
enable, disable and set the movie-mode current for each
flash LED with up to 16 movie-mode settings. The
CXLE88130 also includes a separate Flash Enable input to
initiate both the flash operation and the default timer,
which can be used either to terminate a flash event at the
end of a user-programmed delay or as a safety feature.
The maximum flash and movie-mode current is set by
one external resistor; the ratio of Flash to Movie-mode
current is set at approximately 6.1:1.
An over-voltage protection feature keeps the output
voltage below the OVP threshold in case of an open LED
and an output short circuit protection limits the output
current during an output short to GND. The chip’s
quiescent current is less than 1.0μA in shutdown mode.
产品特点 返回TOPQDl嘉泰姆
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• 输入电压范围:2.7V~5.5VQDl嘉泰姆
• 独立控制的双通道LED驱动QDl嘉泰姆
• 最大1.5A输出电流(单通道750mA)</p>
• 效率可达85%QDl嘉泰姆
• 2MHz开关频率</p>
• 内置I2C总线控制QDl嘉泰姆
- 400KHz串行传输速度QDl嘉泰姆
- 16级Movie模式输出电流QDl嘉泰姆
- Flash模式和Movie模式电流比例可调QDl嘉泰姆
- FTO时间可调QDl嘉泰姆
• 负载完全断开QDl嘉泰姆
• 输入电流限制QDl嘉泰姆
• 内置输出过压、输出短路、过温保护</p>
• 3mm*3mm TDFN封装QDl嘉泰姆
• 符合RoHS指令,无铅封装</p>
2.7V to 5.5V Input Supply RangeQDl嘉泰姆
Dual Channel Output with SeparateQDl嘉泰姆
Flash EnableQDl嘉泰姆
Up to 1.5A Regulated Output CurrentQDl嘉泰姆
(750mA per channel)QDl嘉泰姆
Up to 85% EfficiencyQDl嘉泰姆
2 MHz Fixed Switching FrequencyQDl嘉泰姆
I2C Compliant Serial InterfaceQDl嘉泰姆
- 400kHz Serial Transfer RateQDl嘉泰姆
-16 Level Movie-mode CurrentQDl嘉泰姆
-Flash/Movie-modeQDl嘉泰姆
-Programmable LED CurrentQDl嘉泰姆
-Programmable Flash Safety TimerQDl嘉泰姆
True Load DisconnectQDl嘉泰姆
Input Current LimitQDl嘉泰姆
Output Over-Voltage, Short Circuit, andQDl嘉泰姆
Over-Temperature ProtectionQDl嘉泰姆
3mm′ 3mm TDFN-14 PackageQDl嘉泰姆
RoHS Compliant and 100% Lead (Pb)-FreeQDl嘉泰姆
Halogen-FreeQDl嘉泰姆
应用范围 返回TOPQDl嘉泰姆
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• 智能手机和照相手机</p>
• 数码相机QDl嘉泰姆
• LED照明手电QDl嘉泰姆
Camera-enabled Cellular PhonesQDl嘉泰姆
and Smart PhonesQDl嘉泰姆
Digital Still Cameras (DSCs)QDl嘉泰姆
LED Photo Flash/TorchQDl嘉泰姆
技术规格书(产品PDF) 返回TOP QDl嘉泰姆
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