Products
LT1109A
PRODUCTIONMicropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V, 12V
- Part Models
- 9
- 1ku List Price
- Starting From $3.99
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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
Documentation
Data Sheet 1
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) | ||
| LT1109ACN8-12#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1109ACN8-5#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1109ACS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1109ACS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1109ACS8-12#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1109ACS8-12#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1109ACS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1109ACS8-5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package |
||
| 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 |
||
| 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] |
||
| 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) |
||
| 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 |
||
| 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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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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