Features and Benefits

  • Operates from 2 V to 30 V Input Voltage Range
  • 72 kHz Frequency Operation
  • Utilizes Surface Mount Inductors
  • Very Few External Components Required
  • Operates in Step-Up/Step-Down or Inverting Mode
  • Low Battery Detector
  • User Adjustable Current Limit
  • Internal 1 A Power Switch
  • Fixed or Adjustable Output Voltage
  • 8-Pin DIP or SO-8 Package

Product Details

The ADP1111 is part of a family of step-up/step-down switching regulators that operates from an input voltage supply of 2 V to 12 V in step-up mode and up to 30 V in step-down mode. The ADP1111 can be programmed to operate in step-up/stepdown or inverting applications with only 3 external components.

The fixed outputs are 3.3 V, 5 V and 12 V; and an adjustable version is also available. The ADP1111 can deliver 100 mA at 5 V from a 3 V input in step-up mode, or it can deliver 200 mA at 5 V from a 12 V input in step-down mode.

Maximum switch current can be programmed with a single resistor, and an open collector gain block can be arranged in multiple configuration for low battery detection, as a post linear regulator, undervoltage lockout, or as an error amplifier.


  • 3 V to 5 V, 5 V to 12 V Step-Up Converters
  • 9 V to 5 V, 12 V to 5 V Step-Down Converters
  • Laptop and Palmtop Computers
  • Cellular Telephones
  • Flash Memory VPP Generators
  • Remote Controls
  • Peripherals and Add-On Cards
  • Battery Backup Supplies
  • Uninterruptible Supplies
  • Portable Instruments

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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