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Versatile step-up switching regulator

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Part Details
  • Ground Current: 460 µA
  • Operates at Supply Voltages 2 V to 9 V
  • Fixed 3.3 V, 5 V, 12 V and Adjustable Output
  • Oscillator Frequency: 120 kHz
  • Logic Shutdown
  • Minimum External Components Required
  • 8-Lead DIP and SO-8 Packages
Additional Details
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The ADP1109A-5 can deliver 100 mA at 5 V from a 3 V input and the ADP1109A-12 can deliver 60 mA at 12 V from a 5 V input. The device also features a logic controlled shutdown capability that, when a logic low is applied, will shut down the oscillator. The 120 kHz operating frequency allows for the use of small surface mount components.

The gated oscillator capability eliminates the need for frequency compensation.

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