Datasheet > G5333A

G5333A

更新时间： 2024-09-25 01:25:51

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描述
High Efficiency 4A Synchronous Buck Converter

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G5333A 数据手册

G5333A

Global Mixed-mode Technology

High Efficiency 4A Synchronous Buck Converter

Features

General Description

Ultra-High Efficiency

G5333A is a 4A, synchronous DC/DC buck converter

with integrated 30mΩ N-channel high-side MOSFET

and 30mΩ 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

G5333A 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 G5333A is intended for the power supply

as low as 0.9V. The G5333A is available in

QFN3X3-21 package.

Low Quiescent Current of 30µA

Integrated 30mΩ 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

0.9V to 5.5V Adjustable Output Range

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

TEMP.

RANGE

PACKAGE

(Green)

MARKING

G5333AQP1U

5333A

-40°C to +85°C

QFN3X3-21

Note: QP: QFN3X3-21

1: Bonding Code

U : Tape & Reel

Pin Configuration

AGND

V5V

V+

AGND

PGOOD

PGND

G5333A QFN3X3-21

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

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.3

Aug 12, 2013

中文翻译

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