TOP267EG

The TOP267EG is a highly integrated power management IC from Power Integrations, designed for flyback converter applications. It features a primary-side regulation method, eliminating the need for an optocoupler, which reduces component count and system complexity. The device is optimized for low to medium power applications, providing high efficiency, low standby power consumption, and minimal external components.
Key features include a wide input voltage range, integrated high-voltage startup, and several protection mechanisms such as over-voltage, over-current, and thermal shutdown protections. The TOP267EG supports various output power levels and is suitable for applications like adapters, chargers, and auxiliary power supplies in consumer electronics.
The device also incorporates features such as frequency modulation for reduced electromagnetic interference (EMI) and adjustable output voltage regulation. Its compact package and ease of implementation make it a popular choice for designers looking to enhance performance while minimizing size and costs in power supply designs.

The TOP267EG is a high-performance integrated circuit designed for offline switch-mode power supplies (SMPS). Key features include:
1. Integrated High-Voltage Start-Up Circuit: Allows direct connection to AC mains, eliminating the need for external components.
2. Current Mode Control: Provides improved regulation and response to load changes, enhancing stability and efficiency.
3. Internal Feedback Loop: Ensures precise output voltage regulation with minimal external components.
4. Built-in Over-Current Protection: Safeguards the circuit by limiting the output current during fault conditions.
5. Over-Temperature Protection: Prevents overheating, ensuring reliable operation.
6. Low Standby Power: Meets energy efficiency standards by minimizing power consumption during idle states.
7. Wide Input Voltage Range: Supports various input voltages for versatile applications.
8. Simple Design: Reduces the number of external components required, simplifying circuit design.
These features make the TOP267EG suitable for various applications, including adapters, chargers, and isolated power supplies.

The TOP267EG is typically packaged in an 8-pin PDIP (Plastic Dual In-line Package) format. This package type is designed for easy mounting on printed circuit boards (PCBs) and facilitates efficient thermal management.

The TOP267EG is a power switch IC used primarily in offline power supply applications. It features a total of 8 pins. The pin functions are as follows:
1. Drain (D): Connects to the transformer primary, handling the high-voltage input.
2. Source (S): Connects to the source of the transistor, typically to ground or the negative rail.
3. Gate (G): Controls the switching of the internal power MOSFET.
4. Feedback (FB): Monitors the output voltage to regulate and provide feedback for control.
5. Start (START): Initiates the operation of the chip by connecting to a capacitor.
6. Compensation (COMP): Used for compensation in feedback control to stabilize the output.
7. VDD: Power supply input for the IC, providing the necessary operating voltage.
8. Ground (GND): Common ground reference for the circuit.
This device is commonly employed in low-power applications due to its integrated design and efficiency.

The TOP267EG is manufactured by Power Integrations, Inc., a company specializing in high-performance electronic components for power conversion. Founded in 1985 and headquartered in San Jose, California, Power Integrations designs and develops innovative products that enable efficient power management in various applications, including consumer electronics, industrial systems, and renewable energy. They are known for their energy-efficient power supply solutions that help reduce energy consumption and comply with environmental regulations. Power Integrations focuses on providing integrated circuits and reference designs that improve the efficiency and reliability of power supplies, catering to both high-volume and specialized markets.

The TOP267EG is primarily used in switch-mode power supplies (SMPS) for applications such as adapters, chargers, and LED drivers. Its features make it suitable for low to medium power applications, including home appliances, industrial equipment, and electronic devices that require efficient power conversion. Its built-in functions also enable overvoltage and overcurrent protection, enhancing reliability in various consumer electronics.

The TOP267EG chip is a high-voltage switch mode power supply controller. Equivalent products include the TOP266, TOP268, and TOP269 variants from the same series. Other alternatives may include the NCP1200 series from ON Semiconductor and the LNK series from Power Integrations, such as LNK304 or LNK305. Always verify specifications for compatibility in your specific application.