LM2758是TI公司的一款相机闪光灯LED驱动器产品，LM2758是采用微型 SMD 封装的开关电容器闪存 LED 驱动器，本页介绍了LM2758的产品说明、应用、特性等，并给出了与LM2758相关的TI元器件型号供参考。
LM2758 - 采用微型 SMD 封装的开关电容器闪存 LED 驱动器 - 相机闪光灯LED驱动器 - LED驱动器 - TI公司（Texas Instruments，德州仪器）
LM2758 is an integrated low-noise, high-current switched capacitor DC/DC converter with a regulated current sink. The device is capable of driving loads up to 700 mA from a single-cell Li-Ion battery. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.
One external low-power resistor sets the desired current for Indicator, Torch and Flash modes. To protect the devices and the flash LED, internal Time-out circuitry turns off the LM2758 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.
LM2758 is offered in a tiny 12-bump thin DSBGA package.
- Up to 700 mA Output Current
- Ultra-Small Solution Size
- No Inductor, Only 4 Capacitors and a Resistor Required
- 1.514 mm x 1.996 mm x 0.6 mm Thin DSBGA package
- 90% Peak Efficiency
- Indicator, Torch and Flash Modes
- Time-Out Circuitry Limits Flash Duration to 814 msec. (typ.)
- Adaptive 1x and 1.5x Gains for Maximum Efficiency
- True Shutdown
- Internal Soft-Start Eliminates Inrush Current
