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UC3380 Key Features

  • FEATURES
  • 0.9V Low Start-Up Input Voltage at 1mA Load
  • Low Operation Current
  • 0.5uA Low Shutdown Current
  • Fix Frequency PWM at 300KHZ
  • Built in PWM Switching Control Circuit ,Duty Ratio is 0~78%
  • Output Voltage:0.1V Step Setting is Available Between 2.0V and 6.5V
  • Soft Start Time: 3ms
  • Shutdown Function

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UC3380 Description

The UC3380 is PWM step up DC-DC switching controller that operates from 0.9V. The low start up input voltage makes UC3380 specially designed for powering portable equipment from one or two cells battery packs. This device consist of a soft start circuit, a reference voltage source, an error amplifier, an oscillator, a phase pensation, a PWM controller and an output drive circuit for driving external power transistor.