G5383 [GMT]

High Efficiency 8A Synchronous Buck Converter;


型号：	G5383
厂家：	GLOBAL MIXED-MODE TECHNOLOGY INC
描述：	High Efficiency 8A Synchronous Buck Converter
文件：	总1页 (文件大小：92K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

G5383

Global Mixed-mode Technology

High Efficiency 8A Synchronous Buck Converter

Features

General Description

Ultra-High Efficiency

G5383 is a 8A, synchronous DC/DC buck converter

with integrated 30mΩ N-channel high-side MOSFET

and 15mΩ N-channel low-side MOSFET. It uses con-

stant on-time control scheme to handle wide in-

put/output voltage ratios with ease and provides 100ns

“instant-on” response to load transients while main-

taining a relatively constant switching frequency. The

G5383 achieves high efficiency at a reduced cost by

eliminating the current-sense resistor found in tradi-

tional current-mode PWMs. Single-stage buck conver-

sion allows these devices to directly step down

high-voltage batteries for the highest possible effi-

ciency. The built-in 5V LDO supports 10mA for internal

circuits. The G5383 is intended for the power supply

as low as 0.9V. The G5383 is available in QFN3X3-24

package.

Low Quiescent Current of 30µA

Integrated 15mΩ at V5V=5V N-Channel MOSFET

for Low Side

Integrated 30mΩ at V5V=5V N-Channel

MOSFET for High Side

No Current-Sense Resistor (Lossless I_LIMIT)

Quasi-PWM with 100ns Load-Step Response

1% VOUT Accuracy Over Line and Load

Programmable Switching Frequency

Adjustable Output Range from 0.9V

4.5V to 28V Adapter or Battery Input Range

Integrated Boost Switch

OVP & UVP

Over Temperature Protection (non-latch)

3.3ms Soft-Start

Power-Good Indicator

Fixed 5V, 10mA Linear Regulator

Applications

Networking Power Supply

I/O Supply

Ordering Information

ORDER

NUMBER

G5383QU1U

TEMP.

RANGE

PACKAGE

(Green)

MARKING

5383

-40°C to +85°C

QFN3X3-24

Note: QU: QFN3X3-24

1: Bonding Code

U : Tape & Reel

Pin Configuration

V+

AGND

V5V

V+

PGOOD

16 LX

15 PGND

PGND

13 PGND

G5383 QFN3X3-24

Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.4

Nov 27, 2013

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