TOP261YN

TOP261YN is a highly integrated, high-voltage power supply controller designed for off-line applications. It is part of the TOPSwitch family by Power Integrations and is intended for use in switch-mode power supplies (SMPS). The device integrates a power MOSFET with control circuitry, simplifying design and reducing component count.
Key features include a wide input voltage range, low standby power, and high efficiency. TOP261YN provides a range of protections such as overvoltage, undervoltage, and overtemperature, enhancing reliability and safety in various applications including chargers, adapters, and consumer electronics.
The chip operates in a quasi-resonant mode, which helps minimize switching losses, leading to improved thermal performance and efficiency. With its compact design and integrated features, TOP261YN is suitable for designers seeking to deliver compact, efficient power supplies while reducing overall system complexity.

The TOP261YN is a high-voltage, high-performance PWM controller designed for off-line and DC-DC converter applications. Key features include:
1. Wide Input Voltage Range: Supports input voltages from 85V to 265V AC.
2. Built-in Switching MOSFET: Integrates a high-voltage power MOSFET, reducing external component count and simplifying design.
3. Low Startup Current: Features a low startup current of approximately 30 µA, enhancing efficiency during startup.
4. Frequency Jittering: Implements frequency jittering to reduce electromagnetic interference (EMI) and improve overall system performance.
5. Over-Temperature Protection: Includes thermal shutdown functionality to prevent damage from overheating.
6. Over-Voltage Protection: Ensures reliability by protecting against output over-voltage conditions.
7. Flexible Application Range: Suitable for a variety of applications, including adapters, battery chargers, and lighting.
These features make the TOP261YN an effective choice for efficient power conversion solutions in various electronic devices.

The TOP261YN is packaged in a DIP-8 (Dual In-line Package with 8 pins) configuration. This type of package is commonly used for integrated circuits and allows for easy mounting on circuit boards.

The TOP261YN is a power switch IC with a total of 8 pins. Its primary function is to serve as a high-voltage power supply controller, specifically designed for flyback converter applications. Here's a brief overview of its pin configuration and functions:
1. Pin 1 (GND): Ground connection.
2. Pin 2 (VDD): Supply voltage for the IC.
3. Pin 3 (CS): Current sense input for overcurrent protection.
4. Pin 4 (RAMP): Timing capacitor connection for the frequency control.
5. Pin 5 (COMP): Compensation network connection for feedback stability.
6. Pin 6 (FB): Feedback input for regulating output voltage.
7. Pin 7 (SENSE): Used for sensing the voltage across the primary winding for peak current mode control.
8. Pin 8 (DRAIN): Output pin connected to the transformer for switching.
The TOP261YN is used in applications requiring efficient power conversion, such as power adapters and LED drivers.

The TOP261YN is manufactured by Power Integrations, Inc., a company specializing in high-performance analog and mixed-signal integrated circuits (ICs). Founded in 1985 and headquartered in San Jose, California, Power Integrations focuses on designing innovative semiconductor solutions for power management applications, including energy-efficient offline power supplies and LED drivers. Their products are widely used in consumer electronics, industrial applications, and renewable energy systems, emphasizing energy efficiency and reducing environmental impact.

The TOP261YN is a power switch IC used primarily in offline power supply applications. Its key areas include AC-DC converters, power adapters, LED drivers, and auxiliary power supplies for consumer electronics. It is designed for energy-efficient power management in appliances, industrial equipment, and battery chargers, providing features like overcurrent protection and thermal shutdown for enhanced reliability.

The TOP261YN is a power supply controller from Power Integrations. Equivalent products include the TOP264YN, TOP265YN, and TOP266YN, which are also part of the TOPSwitch family. Alternatives from other manufacturers include the NCP1200 series from ON Semiconductor and the LNK series from Power Integrations. Always check specific electrical characteristics and package types for compatibility.