Kinetic Technologies KTB8370 Synchronous Buck Regulators

Kinetic Technologies KTB8370 Synchronous Buck Regulators are 17V, 5A synchronous buck regulators that include integrated high-side and low-side power FETs. The device operates over a wide input voltage range to support various applications with input voltage from regulated 5V and 12V 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 the external loop compensation network and allows ceramic output capacitors to be used without ripple-generating circuitry. These features enable a very small total solution size and make the KTB8370 easy to use.

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

Kinetic Technologies KTB8370 are available in RoHS and Green compliant 20-bump 1.7mm x 2.0mm x 0.6mm wafer-level chipscale WLCSP20 package.

Features

4.7V to 17V wide V_IN range
5A maximum continuous output current
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 (AOT) 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
Tablets, netbooks, ultra-books, mobile internet devices, IoT, and server

HDD, LPDDR3, LPDDR4 memory power
DSC, drones, gaming consoles, TV set box

Kinetic Technologies KTB8370 Synchronous Buck Regulators

Features

Applications

Application Schematic

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