UC3845A Overview
Description
The UC184xA family of control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by-pulse current limiting and inherent protection of the power supply output switch.
Key Features
- s LOW START-UP CURRENT
- (0.5mA max.) s TRIMMED OSCILLATOR DISCHARGE CURRENT
- (See Product Highlight) p OPTIMIZED FOR OFF-LINE AND DC-TO-DC CONVERTERS
- p AUTOMATIC FEED FORWARD COMPENSATION
- p PULSE-BY-PULSE CURRENT LIMITING
- p ENHANCED LOAD RESPONSE CHARACTERISTICS
- p UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS
- p DOUBLE PULSE SUPPRESSION
- p HIGH-CURRENT TOTEM POLE OUTPUT
- p INTERNALLY TRIMMED BANDGAP REFERENCE
