TOP258YN

The TOP258YN is a power management IC designed for offline flyback power supplies, primarily used in applications like LED drivers, chargers, and consumer electronics. It integrates a high-voltage power MOSFET, a current mode control scheme, and features such as thermal shutdown, over-voltage protection, and cycle-by-cycle current limiting.
Operating with a wide input voltage range (typically 85-265 VAC), the TOP258YN is optimized for energy efficiency and meets regulatory standards for low standby power consumption. It offers a peak power capability of up to 85W and supports a variety of output configurations.
Key features include a low start-up current, adjustable output voltage, and integrated snubber circuitry to minimize electromagnetic interference (EMI). The device simplifies design and reduces component count, making it ideal for compact power supply solutions. Its robust performance and reliability make it a popular choice for engineers in the power supply design space.

The TOP258YN is a high-voltage integrated circuit designed for off-line flyback converters in power supply applications. Key features include:
1. Integrated MOSFET: It includes a 100V power MOSFET, reducing component count and improving efficiency.
2. Wide Input Voltage Range: Supports input voltages from 85V to 265V AC, making it suitable for various applications.
3. Constant Current Regulation: Offers built-in current limiting, enabling safe operation and preventing overload conditions.
4. Low Standby Power: Achieves less than 100mW power consumption in standby mode, enhancing energy efficiency.
5. Integrated Control: Features frequency jittering to minimize EMI emissions, improving performance in sensitive environments.
6. Thermal Protection: Includes thermal shutdown and over-voltage protection to ensure reliability and safety.
7. Adjustable Output Voltage: Allows for flexibility in design, accommodating different application needs.
Overall, the TOP258YN is ideal for low to medium power LED drivers, adapters, and charger applications.

The TOP258YN is packaged in a DIP-8 (Dual In-line Package with 8 pins) form factor.

The TOP258YN is a high-voltage power integrated circuit designed for offline applications, primarily used in switch mode power supplies. It features a total of 8 pins.
Here are the pin functions:
1. Pin 1 (DRAIN): Connects to the external power MOSFET for switching.
2. Pin 2 (SOURCE): Connects to ground or the negative side of the power supply.
3. Pin 3 (VCC): Supplies power to the IC from an external source.
4. Pin 4 (GND): Ground reference for the IC.
5. Pin 5 (FB): Feedback pin for voltage regulation; connects to the output voltage sensing circuit.
6. Pin 6 (CS): Current sense pin used for overcurrent protection.
7. Pin 7 (RAMP): Used for ramp compensation and to stabilize the control loop.
8. Pin 8 (CT): Timing capacitor pin for setting the oscillator frequency.
This configuration allows the TOP258YN to efficiently manage power conversion in various applications.

The TOP258YN is manufactured by Power Integrations, Inc., a company that specializes in high-performance analog and mixed-signal ICs (integrated circuits) for power electronics. Founded in 1988, Power Integrations is known for its innovative solutions in energy-efficient power conversion. Their products are widely used in applications such as LED lighting, consumer electronics, and industrial equipment. The company is recognized for its commitment to environmental sustainability and energy efficiency, providing technologies that help reduce energy consumption and lower carbon footprints. Power Integrations is headquartered in San Jose, California, and is publicly traded on the NASDAQ.

The TOP258YN is a versatile power switch used primarily in offline switching power supplies. Its application areas include LED drivers, battery chargers, AC-DC adapters, and power supplies for consumer electronics. It is suitable for low to medium power applications, providing high efficiency and compact designs in various industrial and commercial electronic devices.

The TOP258YN chip is a switch-mode power supply controller primarily used in flyback converters. Equivalent products include the TOP264YN, TOP256YN, and NCP1200 series from ON Semiconductor, as well as the UC3842 from Texas Instruments. Always check the specific datasheets for compatibility in terms of voltage, current, and application requirements.