LT1111CN8#PBF

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. It functions equally well in step-up, stepdown, or inverting applications. 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. It is widely used in application such as 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 etc.

• Works with surface mount inductors
• Oscillator frequency is 72kHz
• Step-up or step-down mode
• Low-battery detector comparator on-chip
• User adjustable current limit
• Internal 1A power switch
• Only three external components required
• Current limit is 400mA typ
• Operating temperature is 0°C to 70°C
• Packaging style is 8-lead plastic DIP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party