TEXAS INSTRUMENTS LM2754SQ/NOPB 芯片, 发光二极管驱动器, 电荷泵, LLP-24
The LM2754 is an integrated low noise, high current switched capacitor DC/DC converter with four regulated current sinks. The device is optimized for driving 1 to 4 high power white LEDs in parallel with a maximum current of 800mA. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.
Two external low power resistors set the desired current for Torch and Flash modes. The TX pin allows the device to be forced into Torch mode during a Flash pulse, allowing for synchronization between the RF power amplifier pulse and Flash/Torch modes. To protect the device and Flash LEDs, internal Time-Out circuitry turns off the LM2754 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.
The LM2754 is available in a small 24-pin thermally enhanced WQFN package.
频率 1 MHz
电源电压DC 5.50V max
输出接口数 4
输入电压DC 2.80V ~ 5.50V
输出电压 5.1 V
输出电流 800 mA
供电电流 8000 mA
针脚数 24
静态电流 3.40 mA
调节输出数 4
开关频率 1 MHz
过温保护 Yes
输入电压Max 5.5 V
输入电压Min 2.8 V
输出电压Max 5.1 V
输出电流Max 800 mA
工作温度Max 85 ℃
工作温度Min -40 ℃
输入电压 2.8V ~ 5.5V
安装方式 Surface Mount
引脚数 24
封装 WQFN-24
长度 4 mm
宽度 4 mm
高度 0.8 mm
封装 WQFN-24
工作温度 -40℃ ~ 85℃ TA
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM2754SQ/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM2754SQX/NOPB 德州仪器 | 类似代替 | LM2754SQ/NOPB和LM2754SQX/NOPB的区别 |
LM2754SQX 德州仪器 | 功能相似 | LM2754SQ/NOPB和LM2754SQX的区别 |
LM2754SQ 德州仪器 | 功能相似 | LM2754SQ/NOPB和LM2754SQ的区别 |