Skip to product information
1 of 1
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Regular price $1.06
Regular price $1.12 Sale price $1.06
Sale Sold out
Quantity Unit Price Total Price
1 $1.06 $1.06
15+ $1.03 $15.45
25+ $1.01 $25.25
50+ $0.95 $47.50
100+ $0.84 $84.00
N+ $0.17 Price Inquiry
Shipping calculated at checkout.
Quantity
Component Recycling

Request Quote / Inquiry

Product attributes Property Value
Manufacturer Power Integrations
Product Series LYTSwitch™-5
Packaging Cut Tape (CT) | Tape & Reel (TR)
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback, Step-Down (Buck), Step-Up (Boost)
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle -
Frequency - Switching 132.7kHz
Power (Watts) 25 W
Fault Protection -
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width), 14 Leads
Supplier Device Package 16-SO B
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LYT5228D-TL from Power Integrations is a member of the LYTSwitch™-5 series, an offline AC-DC switching IC with an integrated power switch. It supports Flyback, Step-Down (Buck), and Step-Up (Boost) topologies with isolated output, a 725V breakdown voltage, and up to 25 W output power at a 132.7kHz switching frequency. Housed in a 16-SOIC (14-lead) package, it operates across a -40°C to 150°C junction temperature range.

  • Integrated power switch reduces external component count and simplifies the bill of materials.
  • Multi-topology flexibility (Flyback, Buck, Boost) supports both isolated and non-isolated designs with one part.
  • 725V breakdown voltage provides margin for offline mains operation.
  • 25 W output power in a compact 16-SOIC package suits space-constrained designs.
  • -40°C to 150°C junction temperature range supports thermally demanding environments.

Isolated Flyback Power Supplies

The LYT5228D-TL supports Flyback topology with galvanic isolation, making it well suited for offline AC-DC supplies that require safety isolation between input and output. The integrated switch and 725V breakdown rating simplify the primary-side design.

Non-Isolated Buck Converters

For cost-sensitive designs, the device can be configured as a Step-Down (Buck) converter, delivering a regulated lower output voltage directly from the rectified mains without transformer isolation.

Boost Converter Stages

The Step-Up (Boost) topology option enables designs where the output voltage must exceed the input, useful in power-factor and pre-regulation stages.

Compact 25 W Adapters

With 25 W output capability and a 16-SOIC package, the LYT5228D-TL fits space-constrained adapter and charger designs requiring a small footprint.

Wide-Temperature Environments

An operating junction temperature range of -40°C to 150°C supports use in enclosures and applications exposed to elevated thermal stress.

Q: What switching topologies does the LYT5228D-TL support?
A: It supports Flyback, Step-Down (Buck), and Step-Up (Boost) topologies, giving designers flexibility across isolated and non-isolated designs.
Q: Does it include an integrated power switch?
A: Yes, the power MOSFET is integrated on-chip, simplifying design and reducing external component count.
Q: What is the breakdown voltage rating?
A: The device features a 725V breakdown voltage (Vds rating) for robust offline operation.
Q: What output power can it deliver?
A: It is rated for up to 25 W of output power.
Q: What is the switching frequency?
A: The switching frequency is 132.7kHz.
Base Product Number : LYT5228D
16-SOIC 25W 725V AC-DC Converter Boost Converter Buck Converter Flyback Converter Isolated LYTSwitch-5 Offline Switcher Power Integrations
Q: What switching topologies does the LYT5228D-TL support?
A: It supports Flyback, Step-Down (Buck), and Step-Up (Boost) topologies, giving designers flexibility across isolated and non-isolated designs.
Q: Does it include an integrated power switch?
A: Yes, the power MOSFET is integrated on-chip, simplifying design and reducing external component count.
Q: What is the breakdown voltage rating?
A: The device features a 725V breakdown voltage (Vds rating) for robust offline operation.
Q: What output power can it deliver?
A: It is rated for up to 25 W of output power.
Q: What is the switching frequency?
A: The switching frequency is 132.7kHz.