ON Semiconductor UC3845BDR2G High Performance Current Mode Controller

The UC3845BDR2G is a versatile and high-performance current mode pulse width modulation (PWM) controller designed by ON Semiconductor. It is specifically engineered to cater to the demanding needs of power supply applications, including switched-mode power supplies (SMPS), DC-DC converters, and battery chargers. This integrated circuit is well-suited for off-line and DC-to-DC converter applications requiring a high degree of precision and efficiency.

With its wide input voltage range and the ability to operate at frequencies up to 500 kHz, the UC3845BDR2G offers designers flexibility in their circuit designs. The device is characterized by its high output drive capability and its ability to handle power levels ranging from a few watts up to several hundred watts, making it a highly adaptable solution for various applications.

The UC3845BDR2G incorporates several features that enhance its performance and reliability. It has an automatic feed-forward compensation and a trimmed oscillator for precise frequency control. The device also includes a pulse-by-pulse current limiting feature that provides protection against short circuits, ensuring the safety and longevity of your power supply design.

Additionally, the UC3845BDR2G is equipped with an under-voltage lockout with hysteresis, a low startup and operating current, and a high current totem-pole output ideally suited for driving a power MOSFET. Other notable features include an error amplifier, a soft start capability, and a shutdown function that adds to the flexibility and performance of the power management system.

This PWM controller is available in a 14-pin SOIC package, making it compact and easy to integrate into a wide range of electronic products. Its thermal shutdown feature ensures safe operation under varying environmental conditions. With its robust design and comprehensive feature set, the UC3845BDR2G from ON Semiconductor is the go-to choice for engineers looking for a reliable and efficient solution for their power supply designs.

Whether you are developing a new power supply or upgrading an existing system, the UC3845BDR2G provides the performance, durability, and functionality required for today's high-performance electronic devices.