• Product Introduction

LT1301CS8 

Slightly high boost efficiency 5V/12V DC/DC conversion to flash memory

peculiarity

• 120 mAh 12V, 5V or 3.3V power supply
• The supply voltage is as low as 1.8V
• Better high current efficiency than CMOS
• Efficiency up to 89%
• 120μA quiescent current
• Shut down to 10μA
• Programmable 5V or 12V output
• Low V CESAT switch: Typical at 1A 170mV
• I LIM pin program peak switching current
• Use inexpensive surface mount inductors
• 8-pin DIP or SOIC package

description

The LT1301 is a micro-power boost DC/DC converter that uses burst mode trade-in operation. The device can deliver 5V or 12V from the battery input of two batteries. It features programmable logic control of the input 5V or 12V output, a no-load quiescent current of 120μA, and a stop pin that reduces the supply current to 10μA. The power switch on the chip switches at 1A at a switching current, four times higher than the previous design, reducing the saturation voltage by 170mV. The 155kHz internal oscillator allows for the use of extremely small surface mount inductors and capacitors. Guaranteed to work at 1.8V input. This will allow more energy to be extracted from the battery, increasing the working life. The LIM pin can be used for soft-start or scheduled peak switching current with a single resistor that allows the use of smaller inductance in lighter load applications. The LT1301 is available in an 8-pin SOIC package that minimizes board space requirements. For an optional 3.3V/5V boost converter, see LT1300. For higher output power, see LT1302.