The LT1301 is a micro-power boost DC/DC converter that operates in burst mode. The device can provide a dual battery input of 5V or 12V. It features programmable 5V or 12V output with logic control input, no load stationary current of 120µa and off pins, reducing supply current to 10µa. The on-chip power switch features a low saturation voltage of 170mV and a switching current of 1A, four times lower than the previous design.
Block diagram
A 155kHz internal oscillator allows the use of very small surface mount inductors and capacitors. Guaranteed to work at 1.8V input. This can extract more energy from the battery, increasing its lifespan. ILIM pins can be used for soft start or program peak switching current with a single resistor allowing the use of smaller inductors in lighter load applications. The LT1301 comes in an 8-pin SOIC package that minimizes the need for board space.
Test circuit
