MEQ3843 AC/DC Controller – Fixed-Frequency Current Mode PWM Controller, High Performance, SOP8

The MEQ3843 is a high-performance fixed-frequency current-mode controller optimized for AC-DC power conversion systems. It provides precise duty-cycle control, fast transient response, and excellent line/load regulation, making it ideal for offline power supplies and industrial SMPS designs.

With built-in oscillator, error amplifier, and protection features, the controller simplifies power supply design while ensuring stable and efficient operation across varying input conditions.

Key Specifications

• Control Mode: Current Mode

• Topology Support: Flyback / Forward

• Switching Frequency: Fixed

• Package: SOP8

Applications

• Offline SMPS

• Adapters and chargers

• Industrial power supplies

• LED power systems

Features

• Accurate PWM control

• Fast transient response

• Built-in protection functions

• High efficiency operation