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
‧输入电压范围从2.5V到5.5V
‧最大1.5A的恒定输出电流
‧效率高达85%
‧4MHz固定工作频率
‧I2C总线接口
- 400kHz串行输入速率
- 闪光灯模式/手电筒模式/指示模式/待机模式
- 闪关灯模式电流大小可设定为从93.75mA到1.5A
- 手电筒模式电流大小可设定为从48.4mA到375mA
- 闪光灯模式下的FTO时间可调节
- 电流启动时间可调节
- 闪光灯模式下的输入电压监控值可调节
‧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
‧0.5mm的球间距, 9球的WCSP封装
‧符合RoHS指令，无铅封装
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[ CXLE88131 ]"
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产品概述 返回TOP
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TOP
‧输入电压范围从2.5V到5.5V
‧最大1.5A的恒定输出电流
‧效率高达85%
‧4MHz固定工作频率
‧I2C总线接口
- 400kHz串行输入速率
- 闪光灯模式/手电筒模式/指示模式/待机模式
- 闪关灯模式电流大小可设定为从93.75mA到1.5A
- 手电筒模式电流大小可设定为从48.4mA到375mA
- 闪光灯模式下的FTO时间可调节
- 电流启动时间可调节
- 闪光灯模式下的输入电压监控值可调节
‧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
‧0.5mm的球间距, 9球的WCSP封装
‧符合RoHS指令，无铅封装
2.5V to 5.5V Input Supply Range
Up to 1.5A Regulated Output Current
Up to 85% Efficiency
4 MHz Fixed Switching Frequency
I2C-Compatible Interface
- 400kHz Serial Transfer Rate
- Flash/Torch/Indicator/Standby
- Programmable Flash LED Current from 93mA to
1.5A
- Programmable Torch LED Current from 48.4mA
to 375mA
- Programmable Flash Time-Out Timer
- Programmable Current Ramp Timer
- Programmable Input Voltage Flash Monitor
(IVFM)
True Load Disconnect
Input Current Limit
Output Over-Voltage, Short Circuit and
Over-Temperature Protection
1.61mm×1.61mm WCSP-9 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
‧平板电脑
‧LED照明手电
LED Photo Flash/Movie
Smartphone
Tablets
技术规格书（产品PDF) 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 |
|
