产品概述 返回TOP3SU嘉泰姆
CXLE88131是一款4MHz固定工作频率电流模式同步升压转换器。它能为LED闪光灯提供1.5A恒定电流驱动。CXLE88131内置I2C总线接口，通过I2C控制接口可以实现对CXLE88131的开启和关断，并能设置其电流大小。CXLE88131通过两个逻辑输入端STROBE和TX/TORCH能在大电流情况下中断闪光灯模式。在闪光灯模式下，LED电流可以设定为从93.75mA到1.5A的16种电流值；而在手电筒模式下，LED电流大小可以设定为从48.4mA到375mA。在LED开路的情况下，CXLE88131能通过过压保护电路使得输出电压低于过压保护阈值电压；同时在输出短路到地的情况下，短路保护电路能起到保护作用。CXLE88131采用9球的WCSP封装，封装尺寸为1.61毫米×1.61毫米。The CXLE88131 is a 4MHz fixed frequency, current mode
synchronous boost converter. The device is designed to
operate 1.5A constant current driver for flash white LED
applications.
An industry-standard I2C serial digital input is used to
enable, disable and set the current for flash LED. The
CXLE88131 has two logic inputs including a hardware
Flash Enable (STROBE) and a Flash Interrupt input
(TX/TORCH) designed to interrupt the flash pulse during
high battery current conditions. In flash mode, the LED
current source provides 16 target current levels from
93.75mA to 1.5A. And also tin torch mode, the
programmable current ranges from 48.4mA to 375mA.
An over voltage protection feature keeps the output
voltage below the OVP threshold in the case of an open
LED and an output short circuit protection limits the
output current during an output short to GND.
CXLE88131is available in a small 9-bump (1.61mm
×1.61mm) WSCP package.
产品特点 返回TOP3SU嘉泰姆
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‧输入电压范围从2.5V到5.5V3SU嘉泰姆
‧最大1.5A的恒定输出电流</p>
‧效率高达85%3SU嘉泰姆
‧4MHz固定工作频率3SU嘉泰姆
‧I2C总线接口3SU嘉泰姆
- 400kHz串行输入速率3SU嘉泰姆
- 闪光灯模式/手电筒模式/指示模式/待机模式3SU嘉泰姆
- 闪关灯模式电流大小可设定为从93.75mA到1.5A3SU嘉泰姆
- 手电筒模式电流大小可设定为从48.4mA到375mA3SU嘉泰姆
- 闪光灯模式下的FTO时间可调节</p>
- 电流启动时间可调节</p>
- 闪光灯模式下的输入电压监控值可调节3SU嘉泰姆
‧负载完全断开3SU嘉泰姆
‧输入电流限制3SU嘉泰姆
‧内置输出过压、输出短路、过温保护</p>
‧0.5mm的球间距, 9球的WCSP封装3SU嘉泰姆
‧符合RoHS指令，无铅封装</p>
2.5V to 5.5V Input Supply Range3SU嘉泰姆
Up to 1.5A Regulated Output Current3SU嘉泰姆
Up to 85% Efficiency3SU嘉泰姆
4 MHz Fixed Switching Frequency3SU嘉泰姆
I2C-Compatible Interface3SU嘉泰姆
- 400kHz Serial Transfer Rate3SU嘉泰姆
- Flash/Torch/Indicator/Standby3SU嘉泰姆
- Programmable Flash LED Current from 93mA to3SU嘉泰姆
1.5A3SU嘉泰姆
- Programmable Torch LED Current from 48.4mA3SU嘉泰姆
to 375mA3SU嘉泰姆
- Programmable Flash Time-Out Timer3SU嘉泰姆
- Programmable Current Ramp Timer3SU嘉泰姆
- Programmable Input Voltage Flash Monitor3SU嘉泰姆
(IVFM)3SU嘉泰姆
True Load Disconnect3SU嘉泰姆
Input Current Limit3SU嘉泰姆
Output Over-Voltage, Short Circuit and3SU嘉泰姆
Over-Temperature Protection3SU嘉泰姆
1.61mm×1.61mm WCSP-9 Package3SU嘉泰姆
RoHS Compliant and 100% Lead (Pb)-Free3SU嘉泰姆
Halogen-Free3SU嘉泰姆
应用范围 返回TOP3SU嘉泰姆
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‧智能手机和照相手机</p>
‧平板电脑3SU嘉泰姆
‧LED照明手电3SU嘉泰姆
LED Photo Flash/Movie3SU嘉泰姆
Smartphone3SU嘉泰姆
Tablets3SU嘉泰姆
技术规格书（产品PDF) 返回TOP 3SU嘉泰姆
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