LT1424-5
PRODUCTIONIsolated Flyback Switching Regulator with 5V Output
- Part Models
- 6
- 1ku List Price
- Starting From $5.21
Overview
- No Transformer “Third Winding” or Optoisolator Required
- Designed for Use with 1:1 Ratio Transformers
- Fixed, Application Specific 5V Output Voltage
- Regulation Maintained Well into Discontinuous Mode (Light Load)
- Load Compensation Provides Excellent Load Regulation
- Available in 8-Pin PDIP and SO Packages
- Operating Frequency: 285kHz
The LT1424-5 is a monolithic high power switching regulator specifically designed for the isolated flyback topology. No “third winding” or optoisolator is required; the integrated circuit senses the isolated output voltage directly from the primary side flyback waveform. A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry.
The LT1424-5 operates with input supply voltages from 3V to 20V and draws only 7mA quiescent current. It can deliver up to 400mA at 5V with no external power devices. By utilizing current mode switching techniques, it provides excellent AC and DC line regulation.
The LT1424-5 has a number of features not found on other switching regulator ICs. Its unique control circuitry can maintain regulation well into discontinuous mode. Load compensation circuitry allows for improved load regulation. An externally activated shutdown mode reduces total supply current to 20µA typical for standby operation.
Applications
- Isolated Communication Supplies
- Industrial Automation
- Instrumentation Systems
Documentation
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 |
|---|---|---|---|
| LT1424CN8-5#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1424CS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1424CS8-5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1424IN8-5#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1424IS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1424IS8-5#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 |
||
| LT1424CN8-5#PBF | PRODUCTION | |
| LT1424IN8-5#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1424CN8-5#PBF | PRODUCTION | |
| LT1424IN8-5#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1424CN8-5#PBF | PRODUCTION | |
| LT1424IN8-5#PBF | PRODUCTION | |
|
Oct 8, 2024 - 24_0236 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LT1424CS8-5#PBF | PRODUCTION | |
| LT1424CS8-5#TRPBF | PRODUCTION | |
| LT1424IS8-5#PBF | PRODUCTION | |
| LT1424IS8-5#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2) |
||
| LT1424CS8-5#PBF | PRODUCTION | |
| LT1424CS8-5#TRPBF | PRODUCTION | |
| LT1424IS8-5#PBF | PRODUCTION | |
| LT1424IS8-5#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1424CS8-5#PBF | PRODUCTION | |
| LT1424CS8-5#TRPBF | PRODUCTION | |
| LT1424IS8-5#PBF | PRODUCTION | |
| LT1424IS8-5#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1424-5
- LT1424-9
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.
Latest Discussions
No discussions on LT1424-5 yet. Have something to say?
Start a Discussion on EngineerZone®