Description

The UC3843AD is a high-performance current-mode Pulse Width Modulation (PWM) controller designed to control current-mode switched-mode power supplies (SMPS). It integrates essential features required for efficient operation of DC-to-DC converters and off-line flyback/forward power stages. The IC provides a precision reference, oscillator, under-voltage lockout with hysteresis, high-current totem-pole output, and current-limit functions to support reliable power conversion with minimal external components.

FEATURES

• Output Channels: 1
• Supply Voltage Range: 7.6 V – 30 V
• Switching Frequency: ~500 kHz
• Duty Cycle: ~100 %
• Output Current Capability: ~1 A (driver output)
• Operating Temperature Range: 0 °C to +70 °C (commercial)
• Under-Voltage Lockout: With Hysteresis
• Topology Support: Boost, Buck, Fly back, Forward, Buck-Boost
• Mounting Style: Surface Mount

SPECIFICATION

• Dimension: 8.65 × 3.91 × 1.58 mm
• Additional information
• Gross weight: 0.122 g
• Manufacturer part number: UC3843AD