ONSEMI Fixed Frequency Current Mode Controller 12V-25V 500kHz SOIC-8

This ONSEMI Fixed Frequency Current Mode Controller is a high-performance integrated circuit specifically designed for OFF-line and DC-DC converter applications. It provides precise duty cycle control and reliable operation, making it an ideal choice for demanding power management systems.

The device features a trimmed oscillator for precise frequency control, alongside automatic feed forward compensation. It incorporates a temperature compensated reference and a high gain error amplifier for stable performance. A current sensing comparator and a high current totem pole output make this controller ideally suited for driving a power MOSFET, ensuring efficient power delivery.

Protective Features

Safety and reliability are enhanced through multiple integrated protective features. These include input and reference under-voltage lockouts, each with hysteresis to prevent erratic operation during power fluctuations. Additionally, the controller offers latching PWM for cycle-by-cycle current limiting, programmable output dead-time, and a latch for single pulse metering. It also boasts low start-up and operating current, improving overall energy efficiency.

Key Specifications

• Supply Voltage: 12V to 25V
• Output: 13.4V / 200mA
• Switching Frequency: 500kHz
• Topology: Boost and Flyback
• Duty Cycle: Up to 96%
• Package: SOIC-8 Surface Mount
• Operating Temperature: 0°C to 70°C

Housed in a compact SOIC-8 surface mount package, the physical dimensions are 43 mm in height, 33 mm in width, and 15 mm in depth, with a lightweight design of just 0.1 grams. With its robust construction and comprehensive feature set, this current mode controller is perfectly suited for industrial and signal processing applications.