Buck Regulator, 1.5 A, 170 kHz, with Synchronization Capability

The NCV8842 is a 1.5 A buck regulator IC operating at a fixed frequency of 170 kHz. The device employs the V2™ control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation. The NCV8842 accommodates input voltages from 4.0 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 short-circuit protection.

FEATUREs
• V2™ Control Architecture
• 2.0% Error Amp Reference Voltage Tolerance
• Cycle-by-Cycle Current Limiting
• Switch Frequency Decrease of 4:1 in Short Circuit
• Bootstrapped Operation (BOOST)
• Synchronization to External Clock (SYNC)
• 1.0 A Shutdown Quiescent Current
• Thermal Shutdown
• Soft-Start
• Pb-Free Packages are Available
   For more features, see the data sheet

Benefits
• Ultra-fast Transient Response, Improved Regulation and
   Simplified Design
• Tight Output Regulation
• Limits Switch and Inductor Current
• Reduces Short Circuit Power Dissipation
• Increased Efficiency and Minimized On-Chip Power
   Dissipation
• Parallel Supply Operation or Noise Minimization
• Minimize Current Consumption when SHDNB is Asserted
• Protect IC from Over-Temperature
• Decrease Inrush Current and Minimize Output Over-shoot
   During Start-Up

APPLICATIONs
• Automotive
• Industrial