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UC3843BD1R2G Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
UC3843BD1R2GONSEMI10000Yes

UC3843BD1R2G** is a high-performance current-mode PWM controller manufactured by **ON Semiconductor**.

The UC3843BD1R2G is a high-performance current-mode PWM controller manufactured by ON Semiconductor.

Key Specifications:

  • Topology: Current-mode PWM controller
  • Input Voltage (VCC): 8.5V to 30V (operating), 7.6V (UVLO turn-on), 7.2V (UVLO turn-off)
  • Output Drive Current: ±1A (peak)
  • Switching Frequency: Up to 500kHz
  • Duty Cycle Range: 0% to 100%
  • Reference Voltage: 5V (±1%)
  • Error Amplifier Gain Bandwidth: 1MHz
  • Operating Temperature Range: -40°C to +85°C
  • Package: SOIC-8

Descriptions:

The UC3843BD1R2G is designed for DC-DC converter applications, providing precise control with minimal external components. It features an adjustable oscillator, current sensing, and a totem-pole output stage for driving power MOSFETs.

Features:

  • Current-Mode Operation for improved loop response
  • Automatic Feed-Forward Compensation
  • Latching PWM for cycle-by-cycle current limiting
  • Undervoltage Lockout (UVLO) with hysteresis
  • Internal Trimmed Bandgap Reference for stable operation
  • High-Current Totem-Pole Output for direct MOSFET drive

This IC is commonly used in switching power supplies, battery chargers, and offline converters.

(Note: Always refer to the official datasheet for detailed application and design guidelines.)

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