• Product introduction

LT1301CS8

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

peculiarity

• 120 mA 12V, 5V or 3.3V power supply
• The supply voltage is as low as 1.8V
• Better high current efficiency than CMOS
• Up to 89% efficiency
• 120μA quiescent current
• Shut down to 10μA
• Programmable 5V or 12V output
• Low V_CESATSwitch: 170mV typical at 1A
• I_LIMThe pin program peaks the switch current
• Use inexpensive surface mount inductors
• 8-pin DIP or SOIC package

description

The LT1301 is a micropower step-up DC/DC converter using Burst Mode^{Trade in the old}Operate. The device can supply 5V or 12V from the battery input of two batteries. It features programmable logic control of the input 5V or 12V output, no-load quiescent current of 120μA, and a shutdown pin, reducing the supply current to 10μA. The on-chip power switch has a switch current of 1A, four times that of previous designs, reducing saturation voltages by 170mV lower. The 155kHz internal oscillator allows the use of very small surface mount inductors and capacitors. Operation is guaranteed at 1.8V input. This will allow more effort to be extracted from the battery and increase the working life. I_LIMThe pins can be used for soft-start or to plan peak switching currents with a single resistor that allows the use of smaller inductors in lighter load applications. The LT1301 is available in an 8-lead SOIC package that minimizes board space requirements. For a selectable 3.3V/5V boost converter, see the LT1300. For higher output power, see the LT1302.