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Product attributes Property Value
Manufacturer Power Integrations
Product Series LYTSwitch™-2
Packaging Tape & Reel (TR) |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 55%
Frequency - Switching 85kHz
Power (Watts) 7 W
Fault Protection -
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width), 7 Leads
Supplier Device Package SO-8C

The LYT2003D-TL from Power Integrations (LYTSwitch™-2 series) is an isolated Flyback offline switcher with an integrated 725V switch. It delivers up to 7 W at 85kHz switching frequency with a 55% maximum duty cycle. Housed in a 7-lead 8-SOIC package, it operates across a -40°C to 150°C junction temperature range, making it well suited to compact isolated power supplies.

  • Integrated 725V switch reduces external component count and simplifies isolated Flyback designs.
  • Isolated topology provides galvanic isolation for safety-critical applications.
  • 85kHz switching and 55% max duty cycle support compact, efficient 7 W supplies.
  • Wide -40°C to 150°C junction range enables use in demanding thermal environments.
  • Compact 8-SOIC package saves board space.

Compact Isolated Adapters

The LYT2003D-TL's integrated 725V switch and isolated Flyback topology make it ideal for compact offline adapters up to 7 W requiring galvanic isolation.

Standby and Bias Supplies

With 85kHz switching and 55% maximum duty cycle, it provides efficient isolated bias rails for larger systems.

Home Appliance Power

A -40°C to 150°C junction range supports reliable operation in appliance control and auxiliary supplies.

Chargers and IoT Devices

The 7 W rating suits small chargers and IoT power supplies where a compact 8-SOIC footprint is beneficial.

Industrial Controls

Integrated switch and high breakdown voltage simplify isolated power design in industrial control modules.

Q: What topology does the LYT2003D-TL use?
A: It is an isolated Flyback offline switcher.
Q: Is the switch integrated?
A: Yes, it integrates the switch with a 725V breakdown rating.
Q: What is the switching frequency?
A: It switches at 85kHz.
Q: What power level does it support?
A: Up to 7 W of output power.
Q: What is the maximum duty cycle?
A: 55% maximum duty cycle.
Base Product Number : LYT2003D
725V 7W 8-SOIC AC-DC Flyback Converter Isolated LYTSwitch-2 Offline Switcher
Q: What topology does the LYT2003D-TL use?
A: It is an isolated Flyback offline switcher.
Q: Is the switch integrated?
A: Yes, it integrates the switch with a 725V breakdown rating.
Q: What is the switching frequency?
A: It switches at 85kHz.
Q: What power level does it support?
A: Up to 7 W of output power.
Q: What is the maximum duty cycle?
A: 55% maximum duty cycle.