uC3845AN,High-Speed PWM Controller for Power Supply,DIP-8

The UC3845AN is a high-performance, high-speed PWM controller designed for current-mode or switched-mode power supplies. It provides key features like pulse-by-pulse current limiting, enhanced load response characteristics, and undervoltage lockout with hysteresis. With a low startup current of less than 0.5 mA and optimized for off-line and DC-DC converters, the UC3845AN ensures energy-efficient and reliable operation in a wide range of applications. The device operates at up to 500 kHz switching frequency, offering fast and accurate control over switching regulators. Suitable for switch mode power supplies, industrial power modules, and battery-operated PSUs, it’s a versatile choice for high-performance power management systems.

• Low startup current, under 0.5 mA for energy efficiency.
• Designed for peak current mode PWM control in high-speed switching circuits.
• Capable of operating at switching frequencies up to 500 kHz for fast response.
• Integrated with pulse-by-pulse current limiting to protect against overcurrent conditions.
• Automatic feedforward compensation for stable operation in varying load conditions.
• Includes undervoltage lockout with hysteresis for safe and reliable power-up.