Datasheet > G2996

G2996

更新时间： 2022-04-23 23:00:11

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
13页	282K
描述
DDR I/II Termination Regulator

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G2996 数据手册

Global Mixed-mode Technology Inc.

DDR I/II Termination Regulator

General Description

G2996

Features

Operation Supply Voltage: 1.6V to 5.5V

The G2996 is a linear regulator designed to meet the

JEDEC SSTL-18 ,SSTL-2 and SSTL-3 (Series Stub

Termination Logic) specifications for termination of

DDR-SDRAM. It contains a high-speed operational

amplifier that provides excellent response to the load

transients. This device can deliver 1.5A/0.9A continu-

ous current and transient peaks up to 3A/1.8A in the

application as required for DDRI/II-SDRAM termination.

With an independent V_SENSEpin, the G2996 can pro-

vide superior load regulation. The G2996 provides a

Low Supply Current: 280µA @ 2.5V

Low Output Offset

Source and Sink Current

Low External Component Count

No Inductor Required

No external Resistors Required

Thermal Shutdown Protection

Suspend to RAM (STR) function

SOP-8 with Power-Pad package

V_REFoutput as the reference for the applications of the

chipset and DIMMs.

Applications

DDR-SDRAM Termination Voltage

The G2996 can easily provide the accurate V_TTand

V_REFvoltages without external resistors that PCB ar-

eas can be reduced. The quiescent current is as low

as 280µA @ 2.5V. So the power consumption can

meet the low power consumption applications.

DDR-I / DDR-II Termination Voltage

SSTL-2

SSTL-3

The G2996 also has an active low shutdown ( SD ) pin

that provides Suspend to RAM (STR) functionality.

When SD is pulled low, the V_TToutput will be tri-state

providing a high impendence, but V_REFwill remain ac-

tive. A power saving advantage can be obtained in this

mode through lowering the quiescent current to180µA

@ 2.5V.

Ordering Information

ORDER

NUMBER

G2996P1U

G2996F1U

ORDER NUMBER

TEMP.

RANGE

MARKING

PACKAGE

(Pb free)

G2996P1Uf

G2996F1Uf

G2996

-40°C to 85°C

SOP-8

SOP-8 (FD)

Note: P1:SOP-8

U: Tape & Reel

F1:SOP-8(FD)

(FD): Thermal Pad

Pin Configuration

Typical Application Circuit

G2996

VTT

GND

V_REF

_REF=1.25V

0.01µF

V_DDQ

V_DDQ=2.5V

PVIN

AVIN

VDDQ

Thermal

Pad

_DD=2.5V

AV_IN

PV_IN

V_SENSE

V_TT

VSENSE

VREF

V_TT=1.25V

220µF

GND

47µF

SOP-8

Ver: 2.3

May 16, 2006

TEL: 886-3-5788833

http://www.gmt.com.tw

12 3 4 5 6 7...13

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