LT1300 - Micropower High Efficiency 3.3/5V Step-Up DC/DC Converter

Features

  • Up to 220mA Output Current at 5V from 2V Supply
  • Supply Voltage as Low as 1.8V
  • Up to 88% Efficiency
  • Small Inductor -10µH
  • 120µA Quiescent Current
  • Shutdown to 10µA
  • Programmable 3.3V or 5V Output
  • ILIM Pin Programs Peak Switch Current
  • Low VCESAT Switch: 170mV at 1A Typical
  • Uses Inexpensive Surface Mount Inductors
  • 8-Lead DIP or SOIC Package

Typical Application

LT1300 Typical Application
LT1300 Typical Application

Description

The LT1300 is a micropower step-up DC/DC converter that utilizes Burst Mode operation. The device can deliver 5V or 3.3V from a two-cell battery input. It features programmable 5V or 3.3V 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 to program peak switch current with a single resistor allowing the use of less expensive and smaller inductors and capacitors in lighter load applications. The LT1300 is available in an 8-lead SOIC package, minimizing board space requirements. For a 5V/12V Selectable Out-put Converter see the LT1301. For increased output current see the LT1302.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

N-8,SO-8

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1300CN8 PDIP 8 C $3.33 $2.55 View
LT1300CN8#PBF PDIP 8 C $3.33 $2.55 View
LT1300CS8 SO 8 C $3.33 $2.55 View
LT1300CS8#PBF SO 8 C $3.33 $2.55 View
LT1300CS8#TR SO 8 C $2.61 View
LT1300CS8#TRPBF SO 8 C $2.61 View
Buy NowRequest Samples
* 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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC035A LT1300CS8 | MICROPOWER HIGH EFFICIENCY STEP-UP DC/DC. Contact Factory
Buy Now
Click here to view our complete list of demo boards

Applications

  • Palmtop Computers
  • Portable Instruments
  • Bar-Code Scanners
  • DC/DC Converter Module Replacements
  • Battery Backup Supplies
  • Personal Digital Assistants
  • PCMCIA Cards

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

Design Tools

LTspiceIV

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice IV

Models for the following parts are available in LTspice IV:
LT1300

Technical Support