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TOP243FN The Power Integrations TOP243FN is an offline switch with a 700V breakdown voltage and 45W power rating. It utilizes Flyback topology and is designed for through-hole mounting.
Mfr Part #:

TOP243FN

Available from 1 distributors
Mfr Name: Power Integrations
Power Integrations
The Power Integrations TOP243FN is an offline switch with a 700V breakdown voltage and 45W power rating. It utilizes Flyback topology and is designed for through-hole mounting.
✓ Total Stock: 5 pcs
$ Price Range: $0.75

TOP243FN Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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5 pcs
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DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TOP243FN Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Duty Cycle
Fault Protection
Frequency
Internal Switch(s)
Lead Style
Mounting Type
Operating Temperature
Output Isolation
Power (Watts)
Supplier Device Package
Tape & Reel
Topology
Voltage
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TOP243FN Description

Short technical summary and product information.

The Power Integrations TOP243FN is an integrated offline switcher designed for flyback applications. It features a high breakdown voltage of 700V and can deliver up to 45W of power.

 

This component integrates the power MOSFET, PWM control, and fault protection onto a single chip. Key electrical specifications include a switching frequency range of 66kHz to 132kHz and a duty cycle of 66.5%. Fault protection features include current limiting, over temperature, and over voltage protection.

 

The TOP243FN is designed for through-hole mounting and comes in a TO-262-7C package. Its operating temperature range is -40°C to 150°C (TJ). The isolated output and integrated switch simplify power supply designs.

 

This device is suitable for various power supply applications requiring efficient and reliable offline conversion.

TOP243FN Quick Information

Product Type: Offline Switch
Series: TOPSwitch-GX
Canonical Name: Power Integrations TOP243FN Offline Switch
Subcategory: AC/DC Converters

TOP243FN Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TOP243FN Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

TOP243FN Features

  • 700V breakdown voltage for high voltage applications.
  • 45W maximum power output capability.
  • Flyback topology for efficient power conversion.
  • Integrated switch and control circuitry.
  • Through-hole mounting for easy assembly.

TOP243FN Applications

  • Used in offline power supplies.
  • Suitable for flyback converter designs.
  • Ideal for AC/DC power conversion.
  • Applications requiring isolated outputs.

TOP243FN FAQs

7 frequently asked questions generated from this part’s specifications.
What is the breakdown voltage of the TOP243FN?

The breakdown voltage is 700V.

What is the maximum power output of the TOP243FN?

The maximum power output is 45W.

What topology does the TOP243FN use?

The TOP243FN uses Flyback topology.

What is the operating temperature range for the TOP243FN?

The operating temperature range is -40°C to 150°C (TJ).

How is the TOP243FN mounted?

The TOP243FN is a through-hole mount component.

What package type is the TOP243FN supplied in?

The TOP243FN is supplied in a TO-262-7C package.

What are the switching frequency options for the TOP243FN?

The switching frequency range is 66kHz to 132kHz.

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