• Product Introduction

LT1073CS8 

Micropower DC-DC conversion adjustable and fixed 5V, 12V

peculiarity

• No design requirements
• The operating voltage range is from 1.0V to 30V
• It consumes only 95μA of supply current
• Engineering boost or buck mode
• Only three external, off-the-shelf components are required
• Low battery voltage detection comparator chip
• User-adjustable current limit
• Internal 1A power switch
• Fixed or adjustable output voltage version
• Space-saving 8-pin MiniDIP or SO8 package

description

™LT 1073 is a versatile micro-power DC/DC converter. The device requires only three external components to provide a fixed 5V or 12V output. A very low minimum supply voltage of 1V allows for a single cell use LT1073 in applications. The auxiliary gain module on the chip can function as a low-cell voltage detector or after a linear regulator.

Typical application circuits in use The LT1073-5 has an average leakage current of only 135μA offloaded, and its long battery life is ideal for applications where it is very important. The circuit shown can provide a 5V input at 40 mA, 1.25V and 5V low at 10mA from 1V input.

The device can be easily configured as a step-up or buck converter, although for most buck applications or input sources greater than 3V, the LT1173 is recommended. Switching current limit, user-adjustable, by adding an external resistor. The unique reverse battery protection circuitry is limited to reverse supply safety, with a lossless horizontal reverse current voltage of up to 1.6V.