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Description
POWER INTEGRATIONS TOP242PN AC/DC Off-Line Switcher IC, TOPSwitch-GX, Flyback, 85 VAC - 265 VAC, 132 kHz, 720 mA out, 15W, DIP-8The TOP242PN is a TOPSwitch GX Integrated Off line Switcher IC flyback supply provides 4 outputs, delivering 7W from a 230VAC 15% input. Resistor R7 programs the internal TOP242PN current limit to 78% of nominal, just above the level needed for full load at low line. This feature allows a more continuous transformer design for better efficiency and cross regulation, without requiring a larger core size. Resistor R12, C10 and L2 filter conducted EMI;
The TOP242PN is a TOPSwitch-GX Integrated Off-line Switcher IC flyback supply provides 4 outputs, delivering 7W from a 230VAC ±15% input. Resistor R7 programs the internal TOP242PN current limit to 78% of nominal, just above the level needed for full load at low line. This feature allows a more continuous transformer design for better efficiency and cross-regulation, without requiring a larger core size. Resistor R12, C10 and L2 filter conducted EMI; R12 is a flameproof fusible type, also functioning as a fuse. For lower cost, if the supply does not have to meet conducted EMI with the output connected to earth ground, the common mode choke can be replaced with a ? filter. A Zener clamp (D11 and VR1) was selected over an RCD clamp to minimize zero load consumption.
- <0.5W Input power at zero load
- Low component count design occupies 80 x 30 x 16mm
- Integrated soft-start reduces start-up component stresses
- Extended power range for higher power applications
- Eliminate or reduce cost of external components
- Externally programmable accurate current limit
- No turn off glitches line under-voltage (UV) detection
- Line over voltage (OV) shutdown extends line surge limit
- 132kHz Frequency reduces transformer/power supply size
- Hysteretic thermal shutdown for automatic fault recovery
- Large thermal hysteresis prevents PC board overheating
Applications
Power Management, Consumer Electronics
Product details
| Operating Temperature Min | -40°C |
| Input Voltage AC Max | 265V |
| Operating Temperature Max | 150°C |
| No. of Pins | 8Pins |
| Input Voltage AC Min | 85V |
| Product Range | - |
| Topology | Flyback |
| AC / DC Converter Case Style | DIP |
| Power Rating | 15W |
| Packaging | Cut Tape |
| MSL | - |
Other details
| Brand | POWER INTEGRATIONS |
| Part Number | TOP242PN |
| Quantity | Each |
| Technical Data Sheet EN |
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Great sock liners
Size: Medium, Color: (001) Black / Black / Pitch Gray
Awesome socks. Has little gel pad on top of heel for no slip. Thin and comfortable. Previously Purchased at Nordstrom rack and no longer in stock. Happy to find here
Note: Will shrink a little best to air dry
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Very good product
Size: Medium, Color: (001) Black / Black / Pitch Gray
I purchased these to wear inside lowcut slip on casual shoes, I don't particularly like to not wear socks in my shoes for hygienic reasons. Prior to purchasing these socks, all I could find were those made of very light beige hosiery type material , and my slip on shoes would slide around a bit. These are light weight and breathable athletic type material, with a very good gripper strip at the heel. One pair of my slip on casual shoes have a particularly lower cut in the toe area, but the shoe is black and I chose the black color and though I see a hint of the sock there, it matches and does not detract from the look of the casual solid black shoe
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Reviewed in the United States on May 15, 2026
★★★★★ 5
They stay out! No more sock wads!
Size: Medium, Color: (100) White / White / Mod Gray
Best no show socks ever made!!!!! I've been struggling for 2 years to find ones that actually stay on your foot, even other national brands, and I just became content wearing my sneakers without socks. They ALWAYS slid down into my show & I ended up walking on a wad of sock until I could fix it...or usually just took them off after a couple of tries. Enter Under Armor!!! They a mid weight, but not very thick & still breathable. They work too by actually staying on your foot! Not once have they slid down into my show!! Very comfortable but they could be a little more affordable.
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Reviewed in the United States on August 1, 2025
★★★★★ 5
Love!
Size: Large, Color: (100) White / White / Mod Gray
Ive tried so many no show socks but I love these. This is the 3rd set I've bought. They never slip off and the material is thin and breathable. Perfect for working out.
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Reviewed in the United States on March 2, 2026
★★★★★ 5
True no-show socks that don’t slide down!
Size: Medium, Color: (100) White / White / Mod Gray, Size: Medium, Color: (100) White / White / Mod Gray
This is the first pair of no-show socks I’ve tried that actually don’t slide down into my shoes. Trust me… I have tried lots of different pairs and this is the one! They fit perfectly. They’re not too thick and they’re obviously durable because I wash them after each wear, so daily.
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Reviewed in the United States on March 21, 2026