Features

• Wide VIN Range: 4.7V to 17V
• Maximum Continuous Output Current: 5A
• Factory fixed Options for Output Voltage from 0.64V
to 5.5V with 40mV step, available by request
• 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
• 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

Applications

• CPU, GPU, AP, DSP, FPGA, VIO, VSYS
• HDD, LPDDR3, LPDDR4 Memory Power
• Tablets, Netbooks, Ultra-Books, Mobile Internet
Devices, IoT, and Server.
• DSC, Drones, Gaming Consoles, TV Set Box

Description

KTB8370 is 5A, 17V synchronous buck regulators 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 and12V power rails and multicell batteries.
KTB8370 employs Kinetics’ 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 KTB8370
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.
KTB8370 are available in RoHS and Green compliant
20-bump 1.7mm x 2.0mm x 0.6mm wafer-level chipscale
WLCSP20 package.