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LM2753-高功率开关电容器电压转换器/闪存 LED 驱动器
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TI产品 - LM2753介绍

LM2753 - 高功率开关电容器电压转换器/闪存 LED 驱动器

LM2753是TI德州仪器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，本站介绍了LM2753的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品描述

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.

产品特性

  • 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

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