Power Management Switching Regulator Step-Up (Boost) Regulators Micropower Boost

LT1305 - Micropower High Power DC/DC Converter with Low-Battery Detector

Features

  • 5V at 400mA from 2V Input
  • Supply Voltage As Low As 1.8V
  • 120µA Quiescent Current
  • Low-Battery Detector
  • Low VCESAT Switch: 310mV at 2A Typ
  • Uses Inexpensive Surface Mount Inductors
  • 8-Lead SO Package

Typical Application

LT1305 Typical Application
LT1305 Typical Application

Description

The LT1305 is a micropower step-up DC/DC converter that uses Burst Mode operation. Similar to the LT1303, the LT1305 features a 2A internal low-loss switch and can deliver up to four times the output power of the LT1303. Quiescent current is only 120µA and the Shutdown pin further reduces current to 10µA. A low-battery detector provides an open-collector output that goes low when the input voltage drops below a preset level. The LT1305 is available in an 8-pin SO, easing board space requirements.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing		 RoHS
LT1305CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1305CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes


LT1305 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LT1305CS8#PBF SO-8 C $4.25 $3.50 Yes
LT1305CS8#TRPBF SO-8 C $3.56 Yes
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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 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.

Click here to view our complete list of demo boards

Applications

  • 2-Cell and 3-Cell to 5V Conversion
  • EL Panel Drivers
  • Portable Instruments

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Design Tools

LTspice

LTspice® software 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

Models for the following parts are available in LTspice:
LT1305

Technical Support