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CM3202

DDR VDDQ and VTT Termination Voltage Regulator

ON Semiconductor 

CM3202-00

DDR VDDQ and VTT

Termination Voltage

Regulator

Product Description

The CM3202−00 is a dual−output low noise linear regulator

designed to meet SSTL−2 and SSTL−3 specifications for

DDR−SDRAM VDDQ supply and termination voltage VTT supply.

With integrated power MOSFET’s, the CM3202−00 can source up to

2 A of VDDQ continuous current, and source or sink up to 2 A VTT

continuous current. The typical dropout voltage for VDDQ is 500 mV

at 2 A load current.

The CM3202−00 provides fast response to transient load changes.

Load regulation is excellent, from no load to full load. It also has

built−in over−current limits and thermal shutdown at 170°C.

The CM3202−00 supports Suspend−To−RAM (STR) and ACPI

compliance with shutdown mode which tri−states VTT to minimize

quiescent system current.

The CM3202−00 is packaged in an easy−to−use WDFN8. Low

thermal resistance allows it to withstand high power dissipation at

85°C ambient. It operates over the industrial ambient temperature

range of –40°C to 85°C.

http://onsemi.com

1

WDFN8

DE SUFFIX

CASE 511BH

MARKING DIAGRAM

CM320

200DE

CM320 200DE = CM3202−00DE

Features

• Two Linear Regulators

♦ Maximum 2 A Current from VDDQ

♦ Source and Sink Up to 2 A VTT Current

• 1.7 V to 2.8 V Adjustable VDDQ Output Voltage

• 500 mV Typical VDDQ Dropout Voltage at 2 A

• VTT Tracking at 50% of VDDQ

• Excellent Load and Line Regulation, Low Noise

• Fast Transient Response

• Meet JEDEC DDR−I and DDR−II Memory Power Spec.

• Linear Regulator Design Requires No Inductors and Has Low

External Component Count

• Integrated Power MOSFETs

• Dual Purpose ADJ/Shutdown Pin

• Built−In Over−Current Limit and Thermal Shutdown for VDDQ

and VTT

• Fast Transient Response

• Low Quiescent Current

• These Devices are Pb−Free and are RoHS Compliant

ORDERING INFORMATION

Device

CM3202−00DE

Package

Shipping†

WDFN8 3000/Tape & Reel

(Pb−Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

Applications

• DDR Memory and Active Termination Buses

• Desktop Computers, Servers

• Residential and Enterprise Gateways

• DSL Modems

• Routers and Switchers

• DVD Recorders

• 3D AGP Cards

• LCD TV and STB

© Semiconductor Components Industries, LLC, 2011

1

April, 2011 − Rev. 3

Publication Order Number:

CM3202−00/D

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