LT8315
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LT8315

560VIN Micropower No-Opto Isolated Flyback Converter with 630V/300mA Switch

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LTspice LT8315 Demo Circuit - µPower No-Opto Isolated Flyback Converter (20-450V to 12V @ 220mA) Download 4.00KB LTspice LT8315 - Switching Regulators Download 4.36 KB
Part Models 6
1ku List Price Starting From $4.90
Features
  • Wide Input Voltage Range: 18V to 560V
  • 630V/300mA Integrated Power Switch
  • No Opto-Isolator Required for Regulation
  • Quasi-Resonant Boundary Mode Operation
  • Constant-Current and Constant-Voltage Regulation
  • Low-Ripple Light Load Burst Mode® Operation
  • Low Quiescent Current: 70μA
  • Programmable Current Limit and Soft-Start
  • TSSOP Package with High Voltage Spacing
Additional Details
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The LT8315 is a high voltage flyback converter with integrated 630V/300mA switch. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency.

At start-up, the LT8315 charges its INTVCC capacitor via a current source attached to the DRAIN pin. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer.

The LT8315 operates from a wide range of input supply voltages and can deliver up to 15W of power. It is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.

Applications

  • Isolated Telecom, Automotive, Industrial, Medical Power Supplies
  • Isolated Off Line Housekeeping Power Supplies
  • Electric Vehicles and Battery Stacks
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file View Data Sheet
Documentation View All Documentation
LTspice LT8315 Demo Circuit - µPower No-Opto Isolated Flyback Converter (20-450V to 12V @ 220mA) Download 4.00KB LTspice LT8315 - Switching Regulators Download 4.36 KB
Part Models 6
1ku List Price Starting From $4.90
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LT8315

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Data Sheet

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UPDATED 01/18/2017
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LT8315: 560VIN Micropower No-Opto Isolated Flyback Converter with 630V/300mA Switch Data Sheet

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UPDATED 04/28/2017
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LT8315: 630V/300mAスイッチを内蔵したオプトカプラ不要の560V入力マイクロパワー絶縁型フライバック・コンバータ データシート

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UPDATED 01/27/2017
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DC2337A - Demo Manual redirect icon

500.00K

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UPDATED 11/20/2017
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DC2478A - Demo Board Manual redirect icon

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Reliability Data

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UPDATED 03/23/2018
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R570 Reliability Data redirect icon

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Technical Articles

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UPDATED 05/02/2017
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No-Opto Flyback DC/DC Converters & Snubber Protection Circuits redirect icon

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UPDATED 01/19/2017
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560V Input, No-Opto Isolated Flyback Converter redirect icon

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UPDATED 01/19/2017
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560V 输入、No-Opto 隔离型反激式转换器 redirect icon

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UPDATED 06/10/2016
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No-Opto Isolated Flyback Converters redirect icon

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UPDATED 06/10/2016
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オプトカプラ不要のフライバック・コンバータ redirect icon

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Documentation

Technical Documents 7
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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
LT8315EFE#PBF 20-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT8315EFE#TRPBF 20-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT8315HFE#PBF 20-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT8315HFE#TRPBF 20-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT8315IFE#PBF 20-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT8315IFE#TRPBF 20-Lead TSSOP w/ EP external-link
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  • Material Declaration external-link
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Apr 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT8315EFE#PBF

PRODUCTION

LT8315EFE#TRPBF

PRODUCTION

LT8315HFE#PBF

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LT8315HFE#TRPBF

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LT8315IFE#PBF

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LT8315IFE#TRPBF

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PCN22_0068_Form

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Material_Report

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Delta Qualification Matrix

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Apr 11, 2019

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Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8315EFE#PBF

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LT8315EFE#TRPBF

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LT8315HFE#PBF

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LT8315HFE#TRPBF

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LT8315IFE#PBF

PRODUCTION

LT8315IFE#TRPBF

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PCN19_0067_Form

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Material_Report

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Delta Qualification Matrix

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Qualification Results Summary

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT8315EFE#PBF

PRODUCTION

LT8315EFE#TRPBF

PRODUCTION

LT8315HFE#PBF

PRODUCTION

LT8315HFE#TRPBF

PRODUCTION

LT8315IFE#PBF

PRODUCTION

LT8315IFE#TRPBF

PRODUCTION

pdf

PCN22_0068_Form

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xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download
Apr 11, 2019

- 19_0067

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Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8315EFE#PBF

PRODUCTION

LT8315EFE#TRPBF

PRODUCTION

LT8315HFE#PBF

PRODUCTION

LT8315HFE#TRPBF

PRODUCTION

LT8315IFE#PBF

PRODUCTION

LT8315IFE#TRPBF

PRODUCTION

pdf

PCN19_0067_Form

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Material_Report

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Delta Qualification Matrix

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Qualification Results Summary

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Detailed Parts List

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Software & Part Ecosystem

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Evaluation Kits 2

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DC2337A

LT8315EFE Isolated Demo Board | Offline Flyback, 90VAC ≤ VIN ≤ 265VAC, VOUT = 12V @ 0.55A

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DC2337A

LT8315EFE Isolated Demo Board | Offline Flyback, 90VAC ≤ VIN ≤ 265VAC, VOUT = 12V @ 0.55A

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DC2337A
LT8315EFE Isolated Demo Board | Offline Flyback, 90VAC ≤ VIN ≤ 265VAC, VOUT = 12V @ 0.55A
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Product Detail

Demonstration circuit 2337A is an offline isolated flyback converter featuring LT8315. The demo board outputs 12V, and maintains tight regulation with a load current from 4mA to 0.55A. It is optimized to operate over a wide AC input voltage range (90VAC to 265VAC, 47Hz to 63Hz). Output voltage accuracy stays within ±5% over the whole input voltage and load range.


 


Resources

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DC2337A - Schematic Download

278.85 K

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DC2337A - Design File Download

448.17 K

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DC2337A - Demo Manual Download

500.00K

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DC2478A

LT8315 Demo Board | 19V to 400VIN Non Isolated Buck, VOUT = 12V at Up to 120mA

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DC2478A

LT8315 Demo Board | 19V to 400VIN Non Isolated Buck, VOUT = 12V at Up to 120mA

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DC2478A
LT8315 Demo Board | 19V to 400VIN Non Isolated Buck, VOUT = 12V at Up to 120mA
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Product Detail

Demonstration circuit 2478A is a non isolated buck converter featuring the LT8315. The demo board outputs 12V, and maintains tight regulation with a load current from 4mA to 120mA. It is optimized to operate over a wide 19V to 400V DC input voltage range. Output voltage accuracy stays within ±1% over the entire input voltage and load range.

Resources

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PDF

DC2478A - Schematics Download

26.00K

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ZIP

DC2478 - Design Files Download

949.00K

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DC2478A - Demo Board Manual Download

400.00K

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Evaluation Kits2

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DC2337A

LT8315EFE Isolated Demo Board | Offline Flyback, 90VAC ≤ VIN ≤ 265VAC, VOUT = 12V @ 0.55A
evaluation kit item images

DC2478A

LT8315 Demo Board | 19V to 400VIN Non Isolated Buck, VOUT = 12V at Up to 120mA

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

spice tool Lt Spice

LT8315 Demo Circuit - µPower No-Opto Isolated Flyback Converter (20-450V to 12V @ 220mA) Download

4.00K

spice tool Lt Spice

LT8315 - Switching Regulators Download

4.36 K

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