ON Semiconductor UC2845BNG High Performance Current Mode Controller

The ON Semiconductor UC2845BNG is a versatile and robust current mode pulse width modulation (PWM) controller designed for a wide array of power supply applications. This high-performance integrated circuit (IC) is engineered to provide reliable and efficient control for DC-DC converters, off-line converters, and other power conversion systems.

With its wide input voltage range and an operating frequency up to 500kHz, the UC2845BNG offers designers the flexibility to tailor their power supply designs for optimal performance. The device features a trimmed oscillator for precise frequency control, a temperature-compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

The built-in under-voltage lockout with hysteresis ensures stable operation under varying input conditions, while the automatic feed-forward compensation helps to maintain regulation over a wide range of input voltages and output loads. The UC2845BNG also includes pulse-by-pulse current limiting, which is crucial for protecting the IC and the power system during overload conditions.

ON Semiconductor's UC2845BNG also incorporates features such as a shutdown pin that allows for low standby power consumption, making it ideal for energy-efficient applications. The device's minimized cross-conduction and leading-edge blanking on the current sense input eliminate the potential for current spikes and noise, ensuring reliable operation even in challenging environments.

Offered in an 8-pin PDIP package, the UC2845BNG is designed to be user-friendly and easy to integrate into a variety of power supply designs. Its robust design and comprehensive feature set make it an excellent choice for applications requiring precise power control, including but not limited to power supplies for computers, office equipment, telecommunications systems, and industrial machinery.

With ON Semiconductor's reputation for quality and reliability, the UC2845BNG current mode PWM controller stands out as a solid choice for your power management needs, delivering performance and durability that engineers can trust.