UC3842B High Performance Current Mode PWM Controller IC DIP 8 Package

UC3842B High Performance Current Mode PWM Controller IC DIP 8 Package 

The UC3842B is a high-performance current-mode Pulse Width Modulation (PWM) controller IC designed for switch-mode power supplies (SMPS) and DC-DC converter applications. It provides precise current control, fast transient response, and built-in protection features, making it a reliable choice for high-efficiency power designs. The DIP-8 package allows easy through-hole mounting for prototyping and production.

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Key Features

• IC Type: Current Mode PWM Controller
• Model: UC3842B
• Package: DIP-8 (Through-Hole)
• Current-mode control for improved stability
• Fixed switching frequency (set by external RC components)
• High current totem-pole output for driving MOSFETs
• Cycle-by-cycle current limiting
• Built-in under-voltage lockout (UVLO)
• Low startup current
• Maximum duty cycle up to ~97%

Typical Applications

• Switch-mode power supplies (SMPS)
• Flyback and forward converters
• AC-DC adapters and power supplies
• Battery chargers
• Industrial and embedded power systems
• DIY and educational power electronics projects

UC3842 Datasheet