UC3844 PWM Controller IC (SOIC 14, Fixed Frequency Current Mode)

The UC3844 is a fixed frequency current mode Pulse Width Modulation (PWM) controller designed for switching power supply applications. It regulates power transfer by monitoring current feedback and controlling the switching duty cycle. Before using this IC, verify the exact manufacturer part number and package, as the standard UC3844 is commonly available in an 8 pin package and a 14 pin version may have a different designation or pinout.

Key Features -

• Fixed frequency current mode PWM control

• Designed for switching power supply regulation

• Cycle by cycle current limiting capability

• Integrated oscillator for switching frequency control

• Undervoltage lockout for controlled startup and shutdown

• Surface mount package, as specified by the manufacturer

Specifications -

• Part Number: UC3844

• IC Type: Current Mode PWM Controller

• Control Method: Fixed Frequency Current Mode

• Package: SOIC 14, as provided

• Output: PWM drive signal for an external switching device

• Protection: Current limiting and undervoltage lockout

• Supply voltage and operating frequency: Refer to the exact manufacturer datasheet

Applications -

• Switched Mode Power Supplies (SMPS)

• Flyback converter circuits

• DC to DC converter designs

• Battery charging power supplies

• Industrial power control circuits

• Power supply regulation and switching control