uC3846DW ,Current Mode PWM Controller, SOIC-16, 40V, 500kHz

The UC3846DW is a high-performance, current-mode PWM controller designed for off-line and DC-to-DC converter applications. This controller is optimized for a wide range of power supply designs, including push-pull configurations. With automatic feed-forward compensation, programmable pulse-by-pulse current limiting, and enhanced load response characteristics, the UC3846DW is ideal for modular power systems.

It also features a differential current sense amplifier, under-voltage lockout, and a soft-start capability, making it highly adaptable to various industrial power converters and telecommunication power systems. Its high current totem-pole output ensures reliable operation, while its wide operating temperature range and high-frequency operation (up to 500kHz) allow it to perform efficiently under demanding conditions. The UC3846DW comes in a SOIC-16 package, providing a compact and reliable solution for surface mount designs.

Key Features :

• Automatic feed-forward compensation for enhanced performance in power systems.
• Programmable pulse-by-pulse current limiting provides robust overcurrent protection.
• Supports automatic symmetry correction in push-pull configurations for power converter applications.
• Totem-pole outputs capable of sourcing and sinking 500mA peak currents for driving power MOSFETs or IGBTs.
• Undervoltage lockout with hysteresis ensures proper startup and prevents oscillation in low voltage conditions.
• Operates at up to 500kHz for applications requiring high switching frequencies.