TOP243PN Converter Offline Flyback Topology 5.85v 1.5mA DIP-8B
The TOP243PN is a highly integrated offline switching regulator IC from the TOP Switch family, designed for fly back power supply topologies. It integrates a high-voltage power MOSFET, PWM controller, oscillator, and multiple protection features into a single compact package. This level of integration significantly reduces the need for external components, simplifying circuit design and improving overall efficiency in AC-DC conversion systems.
This IC operates over a wide input voltage range and provides reliable performance in compact power supplies. It features built-in protection mechanisms such as auto-restart, thermal shutdown, and current limiting, ensuring safe operation even under fault conditions. The TOP243PN is widely used in applications requiring stable, efficient, and compact power solutions, such as adapters, standby power supplies, and consumer electronics.
Features:
- Integrated high-voltage power MOSFET.
- Built-in PWM controller and oscillator.
- Designed for flyback converter topology.
- Auto-restart protection.
- Thermal shutdown protection.
- Cycle-by-cycle current limiting.
- Reduced external component count.
- High efficiency operation.
- Stable performance across load variations.
- Compact DIP package.
Specifications:
| Parameter | Value |
|---|---|
| IC Type | Offline PWM Switch |
| Series | TOPSwitch |
| Package | DIP-8B (8-PDIP-B) |
| Number of Pins | 7 |
| Output Voltage | 5.85V |
| Control Current | ~1.5 mA |
| Input Voltage Range | 85V – 265V AC |
| Breakdown Voltage | ~700V |
| Topology | Flyback |
| Mounting Type | Through-hole |
| Operating Temperature | -40°C to 150°C |
Pinout:
| Pin | Name |
|---|---|
| 1 | M |
| 2 | S |
| 3 | S |
| 4 | C |
| 5 | D |
| 6 | Not specified |
| 7 | S |
| 8 | S |
Applications:
- AC-DC flyback power supplies.
- Power adapters.
- Battery chargers.
- TV and monitor power circuits.
- Consumer electronics power systems.
- Industrial SMPS applications.
Packages Included:
- 1x TOP243PN Converter Offline Flyback Topology 5.85v 1.5mA IC DIP-8B.


