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UC2844 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
UC2844ST100Yes

UC2844 is a high-performance current-mode PWM controller manufactured by STMicroelectronics.

The UC2844 is a high-performance current-mode PWM controller manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

Specifications:

  • Input Voltage Range: 8.5V to 30V
  • Operating Frequency: Up to 500kHz
  • Output Current: ±1A (peak)
  • Duty Cycle Range: 0% to 100%
  • Reference Voltage (Vref): 5V ±1%
  • Quiescent Current: 11mA (typical)
  • Operating Temperature Range: -40°C to +85°C
  • Package Options: PDIP-8, SO-8

Descriptions:

  • The UC2844 is a fixed-frequency PWM controller optimized for high-performance DC-DC converters.
  • It operates in current-mode control, providing improved loop response and simplified feedback design.
  • Includes features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a totem-pole output for driving power MOSFETs.

Features:

  • Current-Mode Control: Enhances line and load regulation.
  • Under-Voltage Lockout (UVLO): Ensures proper startup and shutdown.
  • Programmable Oscillator: Adjustable frequency via external components.
  • Soft-Start Capability: Reduces inrush current during startup.
  • Error Amplifier: High-gain bandwidth for precise regulation.
  • Pulse-by-Pulse Current Limiting: Protects against overloads.
  • Totem-Pole Output: Directly drives MOSFETs with high current capability.

The UC2844 is commonly used in power supplies, inverters, and DC-DC converters.

(Data sourced from STMicroelectronics' official documentation.)

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