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UC2844AN Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
UC2844ANUC157Yes

UC2844AN is a high-performance current-mode PWM controller manufactured by UNITRODE.

The UC2844AN is a high-performance current-mode PWM controller manufactured by UNITRODE. Below are its key specifications, descriptions, and features:

Specifications:

  • Input Voltage (VIN): Up to 30V
  • Output Current (IOUT): ±1A (peak)
  • Switching Frequency: Up to 500kHz
  • Operating Temperature Range: -40°C to +85°C
  • Duty Cycle Range: 0% to 100%
  • Reference Voltage (VREF): 5V (±1%)
  • Start-up Current: <1mA

Descriptions:

  • The UC2844AN is designed for offline and DC-to-DC converter applications.
  • It features a trimmed oscillator for precise duty cycle control.
  • Includes a high-gain error amplifier for tight voltage regulation.
  • Provides current sensing and limiting for enhanced protection.

Features:

  • Current-Mode Operation: Improves loop response and simplifies compensation.
  • Automatic Feed-Forward Compensation: Enhances line regulation.
  • Undervoltage Lockout (UVLO): Ensures proper start-up and shutdown.
  • Pulse-by-Pulse Current Limiting: Protects against overloads.
  • Soft-Start Capability: Reduces inrush current.
  • Totem Pole Output: Optimized for driving power MOSFETs.
  • Low Power Consumption: Suitable for energy-efficient designs.

The UC2844AN is commonly used in power supplies, battery chargers, and flyback converters.

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