ON Semiconductor UC3845BVDR2G High-Performance Current Mode PWM Controller

The ON Semiconductor UC3845BVDR2G is a high-performance current mode pulse width modulation (PWM) controller that is designed to offer efficient power management solutions for a wide range of applications. This versatile IC is optimized for off-line and DC-to-DC converter applications that require precise current control and robust features.

Key Features

• Enhanced Performance: The UC3845BVDR2G features a trimmed oscillator for precise duty cycle 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.
• Protection Mechanisms: It includes built-in under-voltage lockout and soft start features, as well as providing for automatic feed-forward compensation and pulse-by-pulse current limiting, enhancing the safety and longevity of your power supply design.
• Improved System Efficiency: With its ability to operate at a higher frequency of up to 500 kHz, the UC3845BVDR2G allows for smaller-sized components, reducing the overall footprint and cost of the power supply while improving efficiency.
• Versatility: The IC is suitable for a variety of power supply applications including isolated flyback, forward converters, and boost converters.

Applications

• Switching power supplies
• Power converters
• Battery chargers
• DC-DC modules
• LED drivers
• Telecom equipment

Technical Specifications

• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency: Up to 500 kHz
• Automatic Feed Forward Compensation
• Pulse-by-Pulse Current Limiting
• Enhanced Load Response Characteristics
• Under-Voltage Lockout with Hysteresis
• Double Pulse Suppression
• High Current Totem Pole Output
• Internally Trimmed Bandgap Reference
• Soft-Start Feature
• 16-Pin SOIC Package

The UC3845BVDR2G is offered in a compact 16-pin SOIC package, making it ideal for minimizing space on printed circuit boards. ON Semiconductor's commitment to quality ensures that the UC3845BVDR2G delivers reliable and consistent performance for your advanced power management needs.