LM3501TL-16 数据手册 - National Semiconductor（美国国家半导体）

控制方式MODE| PWM \---|--- 输入电压VINInput Voltage| 2.7 ~ 7V 输出电压VOUTOutput Voltage| 16V 输出电流IOUTOutput Current| 400mA/0.4A 震荡频率FOSCOscillation Frequency| 850KHz ~ 1.15MHz 内置FETBuilt-in FET| PMOS Description & Applications| Synchronous Step-up DC/DC Converter for White LED Applications •Synchronous rectification, high efficiency and no external schottky diode required •Uses small surface mount components Can drive 2-5 white LEDs in series (may function with more low-VF LEDs) •2.7V to 7V input range •Internal output over-voltage •protection (OVP) circuitry, with no external zener diode required •LM3500-16: 15.5V OVP; LM3500-21: 20.5V OVP. •True shutdown isolation •Input undervoltage lockout •Requires only small ceramic capacitors at the input and output Thermal Shutdown •0.1µA shutdown current •Small 8-bump thin micro SMD package LCD Bias Supplies •White LED Backlighting •Handheld Devices •Digital Cameras •Portable Applications 描述与应用| 同步降压型DC/ DC转换器，用于白光LED 应用 •同步整流，效率高，无需外部肖特基二极管 •使用小型表面贴装元件 •可以驱动2-5个串联白色LED（可与更多的低VF的LED功能） •2.7V至7V输入范围 •内部输出过电压保护（OVP）电路，无需外部齐纳二极管 LM3500-16：15.5V •精确的关断隔离 •输入欠压锁定 只需要小型的陶瓷电容器的输入和输出 •热关断 •关断电流0.1μA •小8焊球的薄型​​micro SMD封装 •LCD偏置电源 •白光LED背光 •手持设备 •数码相机 •便携式应用