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UC2843AD Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
UC2843ADON/TI163Yes

UC2843AD is a high-performance current-mode PWM controller manufactured by Texas Instruments.

The UC2843AD is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are the specifications, descriptions, and features based on factual information:

Manufacturer:

  • Texas Instruments

Specifications:

  • Topology: Current-mode PWM controller
  • Input Voltage Range (VCC): 8.4V to 30V (operating), 7.9V (start-up threshold)
  • Output Drive Current: ±1A (peak)
  • Switching Frequency: Up to 500kHz
  • Duty Cycle Range: 0% to 100%
  • Reference Voltage (VREF): 5V ±1%
  • Error Amplifier Gain Bandwidth: 1MHz
  • Operating Temperature Range: -40°C to +85°C
  • Package: SOIC-8

Descriptions:

  • The UC2843AD is designed for offline and DC-DC converter applications.
  • It provides precise duty cycle control with current-mode operation for improved loop response and simplified compensation.
  • Features include under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for accurate frequency control.

Features:

  • Current-Mode Operation: Enhances transient response and simplifies loop compensation.
  • Automatic Feed-Forward Compensation: Improves line regulation.
  • Under-Voltage Lockout (UVLO): Ensures proper start-up and shutdown.
  • Trimmed Oscillator: Provides precise frequency control.
  • High-Current Totem Pole Output: Directly drives power MOSFETs.
  • Pulse-by-Pulse Current Limiting: Protects against overloads.
  • Low Startup and Operating Current: Reduces power consumption.

This information is sourced from the manufacturer's datasheet and technical documentation.

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