TOP234PN Offline PWM Switching Power Supply 5.85V 1.5mA IC DIP-8B
The TOP234PN is part of the TOP Switch-II family, integrating a high-voltage power MOSFET, PWM controller, oscillator, and protection circuitry into a single compact device. This integration significantly reduces external component count and simplifies the design of switch-mode power supplies (SMPS). It is specifically designed for offline applications, allowing direct operation from rectified AC mains, making it ideal for compact and cost-effective power solutions.
This IC is optimized for high-efficiency power conversion in fly back and forward converter topologies. It features built-in protection mechanisms such as auto-restart, thermal shutdown, and current limiting, ensuring safe and reliable operation even under fault conditions. The DIP-8B package enhances thermal performance and ease of PCB mounting, making it widely used in consumer electronics, adapters, and industrial power supplies.
Features:
- Integrated high-voltage power MOSFET.
- Built-in PWM controller and oscillator.
- Reduced external component requirement.
- Auto-restart protection.
- Thermal shutdown protection.
- Cycle-by-cycle current limiting.
- High efficiency operation.
- Suitable for offline SMPS designs.
- Stable performance across load variations.
- Compact and reliable design.
Specifications:
| Parameter | Value |
|---|---|
| IC Type | Offline PWM Switch |
| Series | TOP Switch-II |
| Package | DIP-8B (P Package) |
| Number of Pins | 7 |
| Input Voltage Range | 85V – 265V AC |
| Breakdown Voltage | ~700V |
| Output Power Range | Medium power applications |
| Switching Frequency | ~100 kHz |
| 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 power supplies.
- Battery chargers.
- Adapters.
- TV and monitor power supplies.
- Industrial SMPS systems.
- Consumer electronics.
Packages Included:
- 1x TOP234PN Offline PWM Switching Power Supply 5.85V 1.5mA IC DIP-8B.