TOP261EN

TOP261EN is a high-voltage, integrated circuit designed for offline switch mode power supplies (SMPS). It is a member of the TOPSwitch family, offering a cost-effective solution for applications requiring efficient power conversion, such as adapters, chargers, and consumer electronics. The device integrates a high-voltage power MOSFET, control circuitry, and protection features, simplifying the design process and enhancing reliability.
Key features include a wide input voltage range, low start-up current, and multiple protection mechanisms like over-voltage protection (OVP), over-current protection (OCP), and thermal shut-down. The TOP261EN operates in a quasi-resonant mode, which optimizes efficiency by reducing switching losses, especially at low loads. Its compact design allows for minimal external components, making it suitable for space-constrained applications.
Overall, TOP261EN is ideal for engineers looking to develop efficient, compact, and reliable power supplies with minimal complexity.

The TOP261EN is a highly integrated, high-voltage power supply controller designed for off-line flyback converters. Key features include:
1. Wide Input Voltage Range: Supports input voltages from 85V to 265V AC, making it suitable for various applications.
2. High Voltage Startup: Integrated high-voltage startup circuit allows the device to draw power directly from the input voltage.
3. Fixed Frequency Operation: Operates at a fixed frequency, providing stable performance and reducing the need for external compensation.
4. Built-in Current Limit: Incorporates an overcurrent protection feature to enhance safety and reliability.
5. Thermal Shutdown: Protects the circuit from overheating, ensuring longer device lifespan and reliability.
6. Low Standby Power: Designed for energy efficiency with low standby power consumption, complying with energy-saving regulations.
7. Adjustable Output Voltage: The output voltage can be easily adjusted to meet specific requirements.
These features make the TOP261EN ideal for applications such as chargers, adapters, and power supplies for consumer electronics.

The TOP261EN is available in a DIP-8 (Dual In-line Package) form factor. This package type features eight pins and is designed for through-hole mounting, making it suitable for various power supply applications.

The TOP261EN is a high-voltage, low-power switch-mode power supply controller from the TOPSwitch family. It features a total of 8 pins.
The pin functions are as follows:
1. DRAIN: Connects to the primary winding of the transformer.
2. SOURCE: Ground reference for the device.
3. GND: Ground reference pin.
4. VDD: Power supply for the device.
5. CS: Current sense pin to monitor the primary current.
6. COMP: Compensation pin for feedback loop stability.
7. SENSE: Feedback and control pin for output regulation.
8. OSC: Oscillator frequency control, which is also used for timing the switching.
These pins enable the TOP261EN to efficiently manage power conversion, providing features like over-voltage protection, short-circuit protection, and thermal shutdown.

The TOP261EN is manufactured by Power Integrations, Inc. Power Integrations is a semiconductor company specializing in high-performance electronic components for power supply applications. Founded in 1988 and based in San Jose, California, the company develops innovative products that enable energy-efficient power conversion, primarily in consumer electronics, energy-efficient lighting, and industrial applications. Their offerings include integrated circuits and reference designs that help engineers create reliable power supplies while minimizing energy waste, addressing the growing demand for energy efficiency and sustainability in electronic devices.

The TOP261EN is a high-voltage integrated circuit primarily used in switch-mode power supplies (SMPS) for applications such as offline flyback converters. It is suitable for consumer electronics, LED lighting, industrial power supplies, and battery chargers. Its features include low standby power consumption, built-in overvoltage protection, and adjustable output voltage, making it ideal for efficient power management in various electronic devices.

The TOP261EN is a power supply IC from Power Integrations, primarily used for off-line switching power supplies. Equivalent products include the TOP264EN, TOP265EN, and TOP266EN, which offer similar features with varying output power capabilities. Other alternatives from different manufacturers may include the NCP1200 series from ON Semiconductor and the HV9910 from Microchip, depending on specific application requirements. Always verify compatibility regarding voltage, current ratings, and features before substitution.