台湾致新 G5335QT1U 高效10A同步降压变换器

　　General Description

　　G5335 is a 10A, synchronous DC/DC buck converter with integrated 20mΩ N-channel high-side MOSFET and 8.5mΩ N-channel low-side MOSFET. It uses constant on-time control scheme to handle wide input/ output voltage ratios with ease and provides 100ns“instant-on” response to load transients while maintaining a relatively constant switching frequency.

　　The G5335 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency.

　　The G5335 is intended for the power supply of Notebook Computer, or other low-voltage supplies as low as 0.8V. The G5335 is available in QFN4X4-23 package.

　　Features

　　► Ultra-High Efficiency

　　► Integrated 8.5mΩ at VCC=5V N-Channel MOSFET for Low Side

　　► Integrated 20mΩ at VCC=5V N-Channel MOSFET for High Side

　　► No Current-Sense Resistor (Lossless ILIMIT)

　　► Quasi-PWM with 100ns Load-Step Response

　　► 1% VOUT Accuracy Over Line and Load

　　► Programmable Switching Frequency

　　► Adjustable Output Range from 0.8V

　　► 4.5V to 28V Adapter or Battery Input Range

　　► Integrated Boost Switch

　　► OVP & UVP

　　► Over Temperature Protection (non-latch)

　　► Adjustable Soft-Start

　　► Power-Good Indicator

　　Applications

　　► Notebook Computers

　　► I/O Supply

　　► Chipset/RAM Supply as Low as 0.8V

　　► Networking Power Supply