Datasheet > G2997P7U

G2997P7U

更新时间： 2024-09-25 03:38:27

品牌	Logo	应用领域
致新 - GMT		稳压器双倍数据速率
页数	文件大小	规格书
10页	591K
描述
DDR Termination Regulator

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中文翻译

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数据手册

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G2997P7U 数据手册

Global Mixed-mode Technology Inc.

DDR Termination Regulator

General Description

G2997

Features

Support Both DDR I (1.25VTT) and DDR II

(0.9 VTT) Requirements

The G2997 is a 3A sink/source tracking termination

regulator. It is specifically designed for low-cost/

low-external component count systems. The G2997

maintains a high speed operational amplifier that pro-

vides fast load transient response and only requires

20µF (2x10µF) of ceramic output capacitance. The

G2997 supports remote sensing functions and all fea-

tures required to power the DDR I / DDR II VTT bus

termination according to the JEDEC specification. In

addition, the G2997 includes integrated sleep-state

controls placing VTT in High-Z in S3 (suspend to RAM)

and soft-off for VTT and VTTREF in S5 (Shutdown).

The G2997 is available in the thermally efficient 10pin

MSOP and MSOP (Exposed PAD).

Input Voltage Range: 3.3V to 5.5V

VLDOIN Voltage Range: 1.2V to 3.6V

Requires Only 20µF Ceramic Output Capaci-

tance

Supports High-Z in S3 and Soft-Off in S5

Integrated Divider Tracks 1/2 VDDQSNS for

Both VTT and VTTREF

Remote Sensing (VTTSNS)

±20mV Accuracy for VTT and VTTREF

10mA Buffered Reference (VTTREF)

Built-In Soft-Start

Over Current Protection

Thermal Shutdown Protection

MSOP-10 and MSOP-10(Exposed Pad) Package

Ordering Information

Applications

DDR I/II Memory Termination

SSTL−2, SSTL−18

ORDER

NUMBER

G2997P7U

G2997F6U

TEMP.

RANGE

PACKAGE

(Pb free)

MARKING

HSTL Termination

G2997

-40°C~85°C

MSOP-10

MSOP-10 (FD)

Note: P7: MSOP-10

U: Tape & Reel

F6: MSOP-10 (FD)

(FD): Thermal Pad

Pin Configuration

Typical Application Circuit

G2997

VIN=5V

VDDQSNS

VLDOIN

VIN

2.5V

VDDQSNS

VLDOIN

VTT

VIN

VTT

GND

Thermal

Pad

2*10µF

PGND

VTTSNS

GND

VTTREF

PGND

0.1µF

VTTSNS

VTTREF

Top View

Bottom View

MSOP-10

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

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.1

Jul 06, 2006

12 3 4 5 6 7...10

中文翻译

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