LT1109A

PRODUCTION

Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V

Part Models: 9
1ku List Price: Starting From $3.47

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Overview

Uses Off-the-Shelf Inductors
Low Cost
8-Pin DIP or SO Package
Fixed 5V or 12V Output or Adjustable Version
Only Four External Components Required
360µA Standby Current
Logic-Controlled Shutdown

The LT1109A is a simple step-up DC/DC converter. The 8-pin DIP or SOIC devices require only four external components to construct a complete DC/DC converter. Current drain is just 360µA at no load, making the device ideal for cost-sensitive applications where standby current must be kept to a minimum.

The LT1109A-12 can deliver 12V at over 150mA from a 5V supply, enough power to program four flash memory chips simultaneously. The LT1109A-5 can deliver 5V at up to 110mA from a 2V input. The devices feature a shutdown pin that turns off the oscillator when taken low. The gatedoscillator design requires no frequency compensation components. High frequency 120kHz operation permits the use of small surface mount inductors and capacitors.

Applications

Flash Memory VPP Generators
5V to 12V Converters
3.3V to 12V Converters
Disk Drives
PC Plug-In Cards
Peripherals
Battery-Powered Equipment

Part Models: 9
1ku List Price: Starting From $3.47

Documentation

Data Sheet 1

LT1109A: Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V Data Sheet 08/27/2007

Reliability Data 1

R177 Reliability Data 03/23/2018

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT1109ACN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACN8-12#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACN8-5#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACS8-12#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACS8-12#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACS8-5#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1109ACS8-5#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package
		PCN24_0234_Form Material_Report Marking Comparison
LT1109ACN8#PBF	PRODUCTION
LT1109ACN8-12#PBF	PRODUCTION
LT1109ACN8-5#PBF	PRODUCTION
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package
		PCN22_0241_Form Material_Report Qualification Results Summary
LT1109ACN8#PBF	PRODUCTION
LT1109ACN8-12#PBF	PRODUCTION
LT1109ACN8-5#PBF	PRODUCTION
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]
		PCN22_0172_Form Material_Report Delta Qualification Matrix
LT1109ACN8#PBF	PRODUCTION
LT1109ACN8-12#PBF	PRODUCTION
LT1109ACN8-5#PBF	PRODUCTION
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1109ACS8#PBF	PRODUCTION
LT1109ACS8#TRPBF	PRODUCTION
LT1109ACS8-12#PBF	PRODUCTION
LT1109ACS8-12#TRPBF	PRODUCTION
LT1109ACS8-5#PBF	PRODUCTION
LT1109ACS8-5#TRPBF	PRODUCTION
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0060_Form Material_Report Delta Qualification Matrix
LT1109ACS8#PBF	PRODUCTION
LT1109ACS8#TRPBF	PRODUCTION
LT1109ACS8-12#PBF	PRODUCTION
LT1109ACS8-12#TRPBF	PRODUCTION
LT1109ACS8-5#PBF	PRODUCTION
LT1109ACS8-5#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT1109
LT1109-12
LT1109-5
LT1109A
LT1109A-12
LT1109A-5

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.

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