KTB8372 is 5A, 18V synchronous buck regulator with integrated high-side and low-side power FETs. The device operates over a wide input voltage range to support a variety of applications with input voltage from regulated 5V and 12V power rails and multicell batteries. The fix options for output voltage can be predefined and trimmed by the factory.

KTB8372 employs Kinetic’s proprietary advanced adaptive on-time (AOT) control for fast transient response and high output voltage accuracy. This control technique eliminates external loop compensation network and allows the use of ceramic output capacitors without ripple-generating circuitry. These features enable very small total solution size and make KTB8372 easy to use.

The device features an internal soft-start function to limit inrush current during start-up. The device has comprehensive built-in protection features including input voltage UVLO, high-side cycle-by-cycle peak current limit, low-side valley current limit, reverse current protection, short-circuit protection, output overvoltage protection, and thermal shutdown.

KTB8372 is available in RoHS and Green compliant 11-Pin UQFN (2.2mm x 2.5mm) package.


  • Wide VIN Range: 4.7V to 18V
  • Maximum Continuous Output Current: 5A
  • VOUT = 1.8V
  • Different fixed options are available for predefined output voltage by the factory.
  • 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.
  • Factory 300kHz, 500kHz, 800kHz, and 1MHz Switching Frequency options available by request
  • Internal Soft-Start
  • Factory Forced CCM (FCCM) or automatic CCM/PFM (Auto-Skip) Options
  • Active discharge Mode option
  • Ultrasonic Mode option 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
  • 11-Pin UQFN (2.2mm x 2.5mm) Package


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

Packaging Information

Package Dimensions Bumps Package


UQFN2.22.5-11 2.20mm x 2.50mm x 0.55mm 11 UFA


Vin (min) Vin (max) Switching Frequency (MHz) Max Current


4.7V 18.0V Adj 0.5/1.0/1.5/2.0MHz 5.0

Technical Documentation

Description Documents Type
Package Outline DrawingUQFN-11 UFA PODPDF

Evaluation Tools

Documents Type
User ManualPDF
Quick Start GuidePDF
Bill of MaterialsXLSX
3D BoardPDF


Part Number Marking Operating Temperature Package
KTB8372CEUFA-5C-TA RYYWZ -40°C to +85°C UQFN-11
Purchase Options
Buy from Digi-Key
Buy from Mouser