The LT1108 is a versatile micropower DC/DC converter. The device requires only four 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 LT1108 functions equally well in step-up, step-down, or inverting applications. The LT1108 is pin-for-pin compatible with the LT1173, but has a duty cycle of 70%, resulting in increased outputcurrent in many applications. The LT1108 can deliver 150mA at 5V from a 2 AA cell input and 5V at 300mA from 9V in step-down mode. Quiescent current is just 110µA, making the LT1108 ideal for power conscious battery-operated systems. Switch current limit can be programmed with a single resistor.An auxiliary gain block can be configured as a low battery detector, linear post regulator, under voltage lock-out circuit, or error amplifier. Applications * Palmtop Computers * 3V to 5V, 5V to 12V Converters * 9V to 5V, 12V to 5V Converters * LCD Bias Generators * Peripherals and Add-On Cards * Battery Backup Supplies * Cellular Telephones * Operates at Supply Voltages from 2V to 30V * Consumes Only 110µA Supply Current * Works in Step-Up or Step-Down Mode * Only Four External Components Required * 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 S8 Package https://elecena.pl/product/240826/micropower-dc-dc-converter-adjustable-and-fixed-5v-12v 2007-02-28 https://elecena.pl/product/240826/micropower-dc-dc-converter-adjustable-and-fixed-5v-12v 2016-04-13 https://elecena.pl/product/240826/micropower-dc-dc-converter-adjustable-and-fixed-5v-12v 2025-01-22