CM3202-02 Regulator Datasheet

CM3202-02 Datasheet, PDF, Equivalent


Part Number

CM3202-02

Description

DDR VDDQ and VTT Termination Voltage Regulator

Manufacture

ON Semiconductor

Total Page 11 Pages
Datasheet
Download CM3202-02 Datasheet


CM3202-02
CM3202-02
DDR VDDQ and VTT
Termination Voltage
Regulator
Product Description
The CM320202 is a dualoutput low noise linear regulator
designed to meet SSTL2 and SSTL3 specifications for
DDRSDRAM VDDQ supply and termination voltage VTT supply.
With integrated power MOSFETs the CM320202 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 CM320202 provides excellent full load regulation and fast
response to transient load changes. It also has builtin overcurrent
limits and thermal shutdown at 170°C.
The CM320202 supports SuspendToRAM (STR) and ACPI
compliance with Shutdown Mode which tristates VTT to minimize
quiescent system current.
The CM320202 is available in a space saving WDFN8 surface
mount packages. Low thermal resistance allows them to withstand
high power dissipation at 85°C ambient. The CM320202 can operate
over the industrial ambient temperature range of –40°C to 85°C.
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
0.85 V to 1.4 V VTT Output Voltage (Tracking at 50% of VDDQ)
500 mV Typical VDDQ Dropout Voltage at 2 A
Excellent Load and Line Regulation, Low Noise
Meets JEDEC DDRI and DDRII Memory Power Spec
Linear Regulator Design Requires no Inductors and Has Low
External Component Count
Integrated Power MOSFETs
Dual Purpose ADJ/Shutdown Pin
BuiltIn OverCurrent Limit and Thermal Shutdown for VDDQ
and VTT
Fast Transient Response
Low Quiescent Current
These Devices are PbFree and are RoHS Compliant
http://onsemi.com
1
WDFN8
DE SUFFIX
CASE 511BH
MARKING DIAGRAM
CM320
202DE
CM320 202DE = CM320202DE
ORDERING INFORMATION
Device
CM320202DE
Package
WDFN8
(PbFree)
Shipping
3000/Tape & Reel
†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 Switches
DVD Recorders
3D AGP Cards
LCD TV and STB
© Semiconductor Components Industries, LLC, 2011
March, 2011 Rev. 3
1
Publication Order Number:
CM320202/D

CM3202-02
CM320202
TYPICAL APPLICATION
VIN = 3.3 V to 3.6 V
CIN
220 mF/
10 V
4.7 mF/10 V
cer
VTT = 1.25 V / 2A
220 mF/
10 V
CTT
4.7 mF/
10 V
cer
1 VIN
VDDQ 8
2 NC
ADJSD 7
CM3202
3 VTT
GND 6
4 NC
GND 5
VTT
VDDQ = 2.5 V/2 A
CDDQ 4.7 mF/10 V, cer
220 mF/
10 V
Chip
Set
R1
10 k
R2
S/D 10 k
1.25 V, 2.5 A
1k
VDDQ
DL0
RT0
DLn
RTn
VREF
VDDQ
DDR
REF MEMORY
0.1 mF/10 V
cer
FUNCTIONAL BLOCK DIAGRAM
VIN ADJSD
OTP &
Shutdown
UVLO &
Bandgap
+
-
Vref1
Vref
R
+
-
R
+ Current
- Limit
Current
Limit
Current
Limit
CM320202
ADDQ
VTT
GND
http://onsemi.com
2


Features CM3202-02 DDR VDDQ and VTT Termination Voltage Regulator Product Description The CM3202−02 is a dual−output low noise linear regulator designed to meet SSTL−2 and SSTL−3 specifications f or DDR−SDRAM VDDQ supply and terminat ion voltage VTT supply. With integrated power MOSFETs the CM3202−02 can sour ce up to 2 A of VDDQ continuous current , and source or sink up to 2 A VTT cont inuous current. The typical dropout vol tage for VDDQ is 500 mV at 2 A load cur rent. The CM3202−02 provides excellen t full load regulation and fast respons e to transient load changes. It also ha s built−in over−current limits and thermal shutdown at 170°C. The CM3202 02 supports Suspend−To−RAM (STR) and ACPI compliance with Shutdown Mode which tri−states VTT to minimize quie scent system current. The CM3202−02 i s available in a space saving WDFN8 sur face mount packages. Low thermal resist ance allows them to withstand high powe r dissipation at 85°C ambient. The CM3202−02 can operate over the industrial ambient tempera.
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