LT1303
PRODUCTIONMicropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable and Fixed 5V
- Part Models
- 11
- 1ku List Price
- Starting From $4.58
Overview
- 5V at 200mA from a 2V Input
- Supply Voltage As Low As 1.8V
- Up to 88% Efficiency
- 120µA Quiescent Current
- Low-Battery Detector
- Low VCESAT Switch: 170mV at 1A Typ
- Uses Inexpensive Surface Mount Inductors
- 8-Lead PDIP or SO Package
The LT1303/LT1303-5 are micropower step-up high efficiency DC/DC converters using Burst Mode™ operation. They are ideal for use in small, low-voltage battery-operated systems. The LT1303-5 accepts an input voltage between 1.8V and 5V and converts it to a regulated 5V. The LT1303 is an adjustable version that can supply an output voltage up to 25V. Quiescent current is only 120µA from the battery and the shutdown pin further reduces current to 10µA. The low-battery detector provides an open-collector output that goes low when the input voltage drops below a preset level. The on-chip NPN power switch has a low 170mV saturation voltage at a switch current of 1A. The LT1303/1303-5 are available in 8-lead PDIP or SO packages, easing board space requirements.
For higher output current, please see the LT1305 or LT1302.
Applications
- EL Panel Drivers
- 2-Cell and 3-Cell to 5V Conversion
- Palmtop Computers
- Portable Instruments
- Bar-Code Scanners
- Wireless Systems
Documentation
Data Sheet 1
Design Note 2
Spec Notice 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 |
|---|---|---|---|
| LT1303CN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1303CN8-5#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1303CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303CS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303CS8-5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303IN8-5#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1303IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303IS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1303IS8-5#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 |
||
| LT1303CN8#PBF | PRODUCTION | |
| LT1303CN8-5#PBF | PRODUCTION | |
| LT1303IN8-5#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1303CN8#PBF | PRODUCTION | |
| LT1303CN8-5#PBF | PRODUCTION | |
| LT1303IN8-5#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1303CN8#PBF | PRODUCTION | |
| LT1303CN8-5#PBF | PRODUCTION | |
| LT1303IN8-5#PBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LT1303CS8#PBF | PRODUCTION | |
| LT1303CS8#TRPBF | PRODUCTION | |
| LT1303CS8-5#PBF | PRODUCTION | |
| LT1303CS8-5#TRPBF | PRODUCTION | |
| LT1303IS8#PBF | PRODUCTION | |
| LT1303IS8#TRPBF | PRODUCTION | |
| LT1303IS8-5#PBF | PRODUCTION | |
| LT1303IS8-5#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1303CS8#PBF | PRODUCTION | |
| LT1303CS8#TRPBF | PRODUCTION | |
| LT1303CS8-5#PBF | PRODUCTION | |
| LT1303CS8-5#TRPBF | PRODUCTION | |
| LT1303IS8#PBF | PRODUCTION | |
| LT1303IS8#TRPBF | PRODUCTION | |
| LT1303IS8-5#PBF | PRODUCTION | |
| LT1303IS8-5#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:
- LT1303
- LT1303-5
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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