RT9005A 데이터 시트보기 (PDF) - Richtek Technology

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RT9005A

DDR VDDQ and Termination Voltage Regulator

Richtek Technology 

Preliminary

RT9005A/B

DDR VDDQ and Termination Voltage Regulator

General Description

The RT9005A/B is a dual-output linear regulator for DDR-

SDRAM VDDQ supply and termination voltage VTT supply.

The Regulator is capable of actively sinking or sourcing

up to 2A. The output termination voltage can be tightly

regulated to track 1/2 VDDQ by two external voltage divider

resistors.

Ordering Information

RT9005

Package Type

SP : SOP-8 (Exposed Pad-Option 2)

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

VOUT1 Output Voltage

A : 2.5V

B : 1.8V

Note :

Richtek Pb-free and Green products are :

`RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

`Suitable for use in SnPb or Pb-free soldering processes.

`100% matte tin (Sn) plating.

Features

z Ideal for DDR-I and DDR-II VDDQ, VTT Applications

z Integrated Power MOSFETs

z Generates Termination Voltage for SSTL_2,

SSTL _18, HSTL, SCSI-2 and SCSI-3 Interfaces

z High Accuracy Output Voltage at Full-Load

z VOUT2 Sink and Source 2A Continuous Current

z VOUT2 Adjustment by Two External Resistors

z Shutdown for Suspend to RAM (STR) Functionality

with High-Impedance Output

z Current Limiting Protection

z On-Chip Thermal Protection

z Available in SOP-8 (Exposed Pad) Packages

z RoHS Compliant and 100% Lead (Pb)-Free

Applications

z Desktop PCs, Notebooks, and Workstations

z Graphics Card Memory Termination

z Set Top Boxes, Digital TVs, Printers

z Embedded Systems

z Active Termination Buses

z DDR-I and DDR-II Memory Systems

Pin Configurations

(TOP VIEW)

BP

VIN1

VIN2

VCNTL

8

2

7

GND

3

96

4

5

VOUT1

GND

VOUT2

VREFEN

SOP-8 (Exposed Pad)

DS9005A/B-01 September 2007

www.richtek.com

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