LM2753是TI公司的一款相机闪光灯LED驱动器产品，LM2753是高功率开关电容器电压转换器/闪存 LED 驱动器，本页介绍了LM2753的产品说明、应用、特性等，并给出了与LM2753相关的TI元器件型号供参考。
LM2753 - 高功率开关电容器电压转换器/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）
The LM2753 is capable of driving a Flash LED with a pulsed current of 400mA at an input voltage of 3.6V. A switched capacitor doubler, the LM2753 provides a regulated 5V output (VOUT) over an input supply range of 3.0V to 5.5V. The switched output, IOUT, takes less than 10ns to turn on and provide maximum current to a Flash LED. Flash LED current is set via a ballast resistor. Continuous illumination current (Torch Mode) is programmed by connecting a resistor between IOUT and VOUT. This device uses only three small, low-cost ceramic capacitors.
LM2753 uses Pulse Frequency Modulation (PFM) regulation. Typical operating frequency is 725kHz. Under no-load conditions, LM2753 operates on only 60µA. If the output is connected to ground, the charge pump stays in the gain of 1 which helps limit the input current to 300mA (typ.)
LM2753 is available in a 10-pin No Pullback SON-10 package.
- Input Voltage Range: 3.0V to 5.5V
- Regulated 5V Output
- 250mA Output Current with a 3.6V Input
- 400mA Pulsed Output Current (up to 500ms Duration)
- 60µA (typ.) Quiescent Current
- PFM Regulation
- Inductor-Less Solution: Requires Only 3 Small Capacitors
- <1µA Typical Shutdown Current
- 10-pin SON Package (No Pullback):
- 3mm x 3mm x 0.8mm
