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UC1823J +BOM

The versatile UC1823J switching controller operates in current-mode control and features a high switching frequency of up to 1MHz

UC1823J General Description

The UC1823J is a versatile and efficient PWM controller IC that is perfect for power supply regulation applications. With its wide input voltage range and high output current capability, this IC offers exceptional performance and reliability. The precision reference voltage and integrated components make it easy to use in a variety of designs

Key Features

  • Compatible with Voltage or Current-Mode Topologies
  • Practical Operation @ Switching Frequencies to 1.0MHz
  • 50ns Propagation Delay to Output
  • High Current Totem Pole Output (1.5A peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic with Double Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Max. Duty Cycle Control
  • Under-Voltage Lockout with Hysteresis
  • Low Start Up Current (1.1mA)
  • Trimmed Bandgap Reference (5.1V ±1%)

Specifications

Topology Boost, Buck, Flyback, Forward Control mode Current
Duty cycle (max) (%) 85 Switching frequency (max) (kHz) 1000
Features Error amplifier, Multi-topology, Soft start, Synchronization pin UVLO thresholds on/off (V) 9.2/8.4
Operating temperature range (°C) -55 to 125 Rating Military
Gate drive (typ) (A) 1.5 Vin (max) (V) 20

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