LT3512
PRODUCTIONMonolithic High Voltage Isolated Flyback Converter
- Part Models
- 8
- 1ku List Price
- Starting From $4.79
Overview
- 4.5V to 100V Input Voltage Range
- Internal 420mA, 150V Power Switch
- Boundary Mode Operation
- No Transformer Third Winding or Opto-Isolator Required for Regulation
- Improved Primary-Side Winding Feedback Load Regulation
- VOUT Set with Two External Resistors
- BIAS Pin for Internal Bias Supply and Power Switch Driver
- No External Start-Up Resistor
- 16-Lead MSOP Package
The LT3512 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 420mA, 150V power switch, high voltage circuitry, and control into a high voltage 16-lead MSOP package with four leads removed.
The LT3512 operates from an input voltage range of 4.5V to 100V and delivers up to 4.5W of isolated output power. Two external resistors and the transformer turns ratio easily set the output voltage. Off-the-shelf transformers are available for several applications. The high level of integration and the use of boundary mode operation results in a simple, clean, tightly regulated application solution to the traditionally tough problem of isolated power delivery.
Applications
- Isolated Telecom Power Supplies
- Isolated Auxiliary/Housekeeping Power Supplies
- Isolated Industrial, Automotive and Medical Power Supplies
Documentation
Data Sheet 1
User Guide 1
Design Note 2
Technical Articles 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 |
|---|---|---|---|
| LT3512EMS#PBF | 16(12)-Lead MSOP | ||
| LT3512EMS#TRPBF | 16(12)-Lead MSOP | ||
| LT3512HMS#PBF | 16(12)-Lead MSOP | ||
| LT3512HMS#TRPBF | 16(12)-Lead MSOP | ||
| LT3512IMS#PBF | 16(12)-Lead MSOP | ||
| LT3512IMS#TRPBF | 16(12)-Lead MSOP | ||
| LT3512MPMS#PBF | 16(12)-Lead MSOP | ||
| LT3512MPMS#TRPBF | 16(12)-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT3512EMS#PBF | PRODUCTION | |
| LT3512EMS#TRPBF | PRODUCTION | |
| LT3512HMS#PBF | PRODUCTION | |
| LT3512HMS#TRPBF | PRODUCTION | |
| LT3512IMS#PBF | PRODUCTION | |
| LT3512IMS#TRPBF | PRODUCTION | |
| LT3512MPMS#PBF | PRODUCTION | |
| LT3512MPMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3512EMS#PBF | PRODUCTION | |
| LT3512EMS#TRPBF | PRODUCTION | |
| LT3512HMS#PBF | PRODUCTION | |
| LT3512HMS#TRPBF | PRODUCTION | |
| LT3512IMS#PBF | PRODUCTION | |
| LT3512IMS#TRPBF | PRODUCTION | |
| LT3512MPMS#PBF | PRODUCTION | |
| LT3512MPMS#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/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
| Ideal Diodes and PowerPath Controllers 1 | ||
| LTC4359 | RECOMMENDED FOR NEW DESIGNS | Ideal Diode Controller with Reverse Input Protection |
| Switching Regulators & Controllers 2 | ||
| LTM8048 | RECOMMENDED FOR NEW DESIGNS | 3.1VIN to 32VIN Isolated μModule (Power Module) DC/DC Converter with LDO Post Regulator |
| LTM8047 | RECOMMENDED FOR NEW DESIGNS | 3.1VIN to 32VIN Isolated μModule (Power Module) DC/DC Converter |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3512
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.
Evaluation Kits
LT3512EMS Demo Board | 36V to 75VIN, VOUT = 5V @ 500mA