4.7V to 17V Input, 5A Synchronous Buck Regulators with AOT Control

  • Wide VIN Range: 4.7V to 17V
  • Maximum Continuous Output Current: 5A
  • Output Voltage 1 : 5.0V
  • Integrated High / Low-Side FETs (65mΩ / 35mΩ)
  • Advanced Adaptive On-Time Control
  • Fast Transient Response
  • Open Drain Power Good Indicator
  • ±0.5% Feedback Voltage Reference
  • Zero Shutdown Supply Current
  • 50μA Non-Switching Operating Quiescent Current
  • 80μA No Load Operating Quiescent Current
  • High Efficiency in Light Load and Heavy Load.
  • Switching Frequency 1 : 500kHz
  • Internal Soft-Start
  • Automatic CCM/PFM 1
  • Ultrasonic Mode to Eliminate Audio Noise
  • Built-in Cycle-by-Cycle Current Limit, Short Circuit Protection, Input UVLO, Output Under-Voltage Protection, Output Over-Voltage Protection, and Thermal Shutdown Protection
  • Small 20-bump WLCSP (1.7mm x 2.0mm) Package
1 Contact Kinetic for alternative options


  • HDD, LPDDR3, LPDDR4 Memory Power
  • Tablets, Netbooks, Ultra-Books, Mobile Internet Devices, IoT, and Server.
  • DSC, Drones, Gaming Consoles, TV Set Box

Key Electrical Specifications

Vin (Min) Vin (Max) Switching Frequency (MHz) Output Auto-Discharge Max Current (A) Package
4.7V 17.0V Options: 500kHz 5.0 WLCSP-20 1.7mm x 2.0mm

Typical Application Diagram

KTB8370 Application Diagram