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TOP242PN - 

AC/DC Off-Line Switcher IC, TOPSwitch-GX, Flyback, 85 VAC - 265 VAC, 132 kHz, 720 mA out, 15W, DIP-8

TOP242PN - AC/DC Off-Line Switcher IC, TOPSwitch-GX, Flyback, 85 VAC - 265 VAC, 132 kHz, 720 mA out, 15W, DIP-8

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TOP242PN   Datasheet
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Product Overview

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 π 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


Power Management, Consumer Electronics

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247 In stock

48 available for 1 - 2 business days delivery
199 available for 3 - 4 business days delivery
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26 will be available for delivery on 3/09/19

More stock available week commencing 7/10/19


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