Power Integrations LYT5228D-TL
| 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 |
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 |
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.
- 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.

LYT5228D-TL.pdf