The LT1111 is a versatile micropower DC/DC converter. The device requires only three external components to deliver a fixed output of 5V or 12V. Supply voltage ranges from 2V to 12V in step-up mode and to 30V in step-down mode. The LT1111 functions equally well in step-up, step-down, or inverting applications. The LT1111 oscillator is set at 72kHz, optimizing the device to work with off-the-shelf surface mount inductors. The device can deliver 5V at 100mA from a 3V input in step-up mode or 5V at 200mA from a 12V input in step-down mode. Switch current limit can be programmed with a single resistor. An auxiliary open-collector gain block can be configured as a low-battery detector, linear post regulator, undervoltage lock-out circuit, or error amplifier. For input sources of less than 2V use the LT1110. Applications * 3V to 5V, 5V to 12V Converters * 9V to 5V, 12V to 5V Converters * Remote Controls * Peripherals and Add-On Cards * Battery Backup Supplies * Uninterruptible Supplies * Laptop and Palmtop Computers * Cellular Telephones * Portable Instruments * Flash Memory VPP Generators * Operates at Supply Voltages from 2V to 30V * Works with Surface Mount Inductors * 72kHz Oscillator * Only Three External Components Required * Step-Up or Step-Down Mode * Low-Battery Detector Comparator On-Chip * User Adjustable Current Limit * Internal 1A Power Switch * Fixed or Adjustable Output Voltage Versions * Space Saving 8-Pin MiniDIP or SO-8 Package https://elecena.pl/product/240893/micropower-dc-dc-converter-adjustable-and-fixed-5v-12v 2007-02-28 https://elecena.pl/product/240893/micropower-dc-dc-converter-adjustable-and-fixed-5v-12v 2016-04-13 https://elecena.pl/product/240893/micropower-dc-dc-converter-adjustable-and-fixed-5v-12v 2025-01-21