UCC28C44DR PWM Controller IC – Current-Mode Power Supply Controller (VSSOP-8)

UCC28C44DR Current-Mode PWM Controller for Power Supply Applications

The UCC28C44DR is a high-performance current-mode PWM controller IC designed for switch-mode power supplies (SMPS) and DC-DC converters. Engineered for efficiency and reliability, it provides precise control for fixed-frequency power conversion systems.

With low startup current and reduced operating consumption, this controller improves overall system efficiency while maintaining stable performance. Its fast current sensing and high-speed switching capabilities make it ideal for demanding power applications.

Capable of driving external MOSFETs directly with up to ±1A peak output current, the UCC28C44DR ensures efficient switching and reduced losses in power circuits.

Key Features

• Current-mode PWM controller for SMPS and DC-DC applications
• Maximum switching frequency up to 1 MHz
• Low startup current: 50µA (100µA max)
• Low operating current: 2.3 mA
• Cycle-by-cycle overcurrent protection (35 ns response)
• ±1A peak output drive capability for MOSFET control
• High-speed switching with fast rise/fall times
• Accurate 2.5V reference (±1%)
• Undervoltage lockout (UVLO) protection
• Compact VSSOP-8 surface-mount package

Technical Specifications

Applications

Ideal for switch-mode power supplies, offline converters, DC-DC power modules, and industrial power management systems.