uC3843AN DIP-8 PWM Controller, Low Start-up Current, 500kHz Operation

The UC3843AN is a high-performance, current-mode PWM controller designed for off-line and DC-to-DC converter applications. This IC offers excellent load response, under-voltage lockout with hysteresis, and double pulse suppression.

It operates at a frequency of up to 500kHz and features pulse-by-pulse current limiting for enhanced protection. With a low startup current of less than 0.5mA, the UC3843AN is ideal for systems requiring efficient power regulation. It’s housed in an 8-pin DIP package, providing easy integration into circuit designs.

Key Features :

• Optimized for off-line and DC-to-DC converters.
• Low start-up current (<0.5mA) for energy-efficient designs.
• High-frequency operation up to 500kHz.
• Pulse-by-pulse current limiting for enhanced protection.
• Under-voltage lockout with hysteresis to prevent erratic startup.
• Double pulse suppression for stable operation under varying loads.