Overview

Features and Benefits

  • 12V at 120mA from 5V or 3.3V Supply
  • Supply Voltage as Low as 1.8V
  • Better High Current Efficiency Than CMOS
  • Up to 89% Efficiency
  • 120µA Quiescent Current
  • Shutdown to 10µA
  • Programmable 5V or 12V Output
  • Low VCESAT Switch: 170mV at 1A Typical
  • ILIM Pin Programs Peak Switch Current
  • Uses Inexpensive Surface Mount Inductors
  • 8-Lead DIP or SOIC Package

Product Details

The LT1301 is a micropower step-up DC/DC converter that utilizes Burst Mode operation. The device can deliver 5V or 12V from a two-cell battery input. It features programmable 5V or 12V output via a logic-controlled input, no-load quiescent current of 120µA and a shutdown pin which reduces supply current to 10µA. The on-chip power switch has a low 170mV saturation voltage at a switch current of 1A, a four-fold reduction over prior designs. A 155kHz internal oscillator allows the use of extremely small surface mount inductors and capacitors. Operation is guaranteed at 1.8V input. This allows more energy to be extracted from the battery, increasing operating life. The ILIM pin can be used for soft start or to program peak switch current with a single resistor allowing the use of even smaller inductors in lighter load applications. The LT1301 is available in an 8-lead SOIC package, minimizing board space requirements. For a selectable 3.3V/5V step-up converter, please see the LT1300. For higher output power, see the LT1302.

Applications

  • Flash Memory VPP Generator
  • Palmtop Computers
  • Portable Instruments
  • Bar-Code Scanners
  • Personal Digital Assistants
  • PCMCIA Cards

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LT1301

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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