NCV51411

NCV51411 Buck Converter - Low Voltage, Synchronization Capability 1.5 A, 260 kHz The NCV51411 is a 1.5 A buck regulator IC operating at a fixed−frequency of 260 kHz. The device uses the V2t control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation for today’s high−speed logic. The NCV51411 accommodates input voltages from 4.5 V to 40 V and contains synchronization circuitry. The on−chip NPN transistor is capable of providing a minimum of 1.5 A of output current, and is biased by an external “boost” capacitor to ensure saturation, thus minimizing on−chip power dissipation. Protection circuitry includes thermal shutdown, cycle−by−cycle current limiting and frequency foldback. The NCV51411 is functionally pin−compatible with the LT1375. Features V2 Architecture Provides Ultra−Fast Transient Response, Improved Regulation and Simplified Design 2.0% Error Amp Reference Voltage Tolerance Switch Frequency Decrease of 4:1 in Short Circuit Conditions Reduces Short Circuit Power Dissipation BOOST Lead Allows “Bootstrapped” Operation to Maximize Efficiency Sync Function for Parallel Supply Operation or Noise Minimization Shutdown Pin Provides Power−Down Option 85 mA Quiescent Current During Power−Down Thermal Shutdown Soft−Start Pin Compatible with LT1375 (SO−8 Version) NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP...