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
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[ CXLE88130 ]"
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产品概述 返回TOP
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TOP
• 输入电压范围：2.7V~5.5V
• 独立控制的双通道LED驱动
• 最大1.5A输出电流（单通道750mA）
• 效率可达85%
• 2MHz开关频率
• 内置I2C总线控制
- 400KHz串行传输速度
- 16级Movie模式输出电流
- Flash模式和Movie模式电流比例可调
- FTO时间可调
• 负载完全断开
• 输入电流限制
• 内置输出过压、输出短路、过温保护
• 3mm*3mm TDFN封装
• 符合RoHS指令，无铅封装
2.7V to 5.5V Input Supply Range
Dual Channel Output with Separate
Flash Enable
Up to 1.5A Regulated Output Current
(750mA per channel)
Up to 85% Efficiency
2 MHz Fixed Switching Frequency
I2C Compliant Serial Interface
- 400kHz Serial Transfer Rate
-16 Level Movie-mode Current
-Flash/Movie-mode
-Programmable LED Current
-Programmable Flash Safety Timer
True Load Disconnect
Input Current Limit
Output Over-Voltage, Short Circuit, and
Over-Temperature Protection
3mm′ 3mm TDFN-14 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
应用范围 返回TOP
• 智能手机和照相手机
• 数码相机
• LED照明手电
Camera-enabled Cellular Phones
and Smart Phones
Digital Still Cameras (DSCs)
LED Photo Flash/Torch
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产品封装图 返回TOP
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电路原理图 返回TOP
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白光LED驅動器 > LED闪光灯驱动 |
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Part Number |
remark |
Vin (V) |
Iout (mA) |
Max LED |
IQ (mA) |
Freq. (KHz) |
Peak Efficency (%) |
Package |
|
Synchronous Boost Flash LED Driver and Dual 1.5A High Side Current Source with I2C Compatible Interface |
2.5-5.5 |
2500 |
2 |
0.45 |
2000 |
85 |
1.410mm X 1.810mm WCSP12 |
|
|
Synchronous Boost Flash LED Driver and Dual 1.5A High Side Current Source with I2C Compatible Interface |
2.5-5.5 |
1500 |
2 |
0.45 |
2000 |
85 |
1.410mm X 1.810mm WCSP12 |
|
|
1.5A Synchronous Boost LED Flash Driver with I2C Compatible Interface |
2.5-5.5 |
1500 |
1 |
0.45 |
2000 |
85 |
1.410mm X 1.810mm WCSP12 |
|
|
Charge Pump Flash LED Driver with Safety Timer |
2.7~5.5 |
700 |
1 |
0.5/4 |
2400 |
95 |
TDFN-10 |
|
|
1A Charge Pump LED Driver |
2.7~5.5 |
1000 |
1 |
0.5/1.5 |
2200 |
97 |
TDFN-10 |
|
|
1.5A Dual WLED Flash Driver with I2C Compatible Interface |
2.7~5.5 |
1500 |
2 |
0.48 |
2000 |
85 |
TDFN-10 |
|
|
1.5A Synchronous Boost LED Flash Driver with I2C Compatible Interface |
2.5~5.5 |
1500 |
1 |
1.28 |
4000 |
85 |
WCSP-9 |
|
