CM3212-02SM ON Semiconductor, CM3212-02SM Datasheet

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CM3212-02SM

Manufacturer Part Number
CM3212-02SM
Description
Linear Regulators - Standard VDDQ/VTT Regulator w/ enable
Manufacturer
ON Semiconductor
Datasheet

Specifications of CM3212-02SM

Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Features
Applications
© 2009 California Micro Devices Corp. All rights reserved.
Typical Application
Two linear regulators
1.7V to 2.8V adjustable VDDQ output voltage
0.85V to 1.4V VTT output voltage (tracking at 50% of
VDDQ)
Buffered VREF output
500mV typical VDDQ dropout voltage at 2A
Excellent load and line regulation, low noise
Meets 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
Enable VTT pin for sleep or suspend to RAM function
Built-in over-current limit and thermal shutdown for
VDDQ and VTT
Fast transient response
Low quiescent current
TDFN-8 RoHS compliant lead-free package
SOIC-8 RoHS compliant lead-free package
DDR memory and active termination buses
Desktop computers, servers
Residential and enterprise gateways
DSL modems
Routers and switches
DVD recorders, LCD TV and STB
3D AGP cards
V
V
TT
IN
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
= 3.0V to 3.6V
-Maximum 2A current from VDDQ
-Source and sink up to 2A VTT current
= 1.25V/2A
DDR VDDQ and VTT Termination Voltage Regulator
4.7μ/10V
cer
1
2
3
4
C
VIN
VTT
NC
GND
IN
4.7μ
10V
cer
CM3212
C
220μ/10V
TT
220μ/10V
EN_VTT
ADJSD
VDDQ
VREF
8
7
6
5
S/D
Issue A – 05/19/09
10k
10k
R1
R2
V
Tel: 408.263.3214
DDQ
C hip
S et
= 2.5V/2A
Product Description
T
designed to meet SSTL-2 and SSTL-3 specifications
for DDR-SDRAM V
V
CM3212 can source up to 2A of VDDQ continuous
current, and source or sink up to 2A VTT continuous
current. The typical dropout voltage for VDDQ is
500mV at 2A load current.
The CM3212 provides excellent full load regulation and
fast response to transient load changes. It also has
built-in over-current limits and thermal shutdown at
170°C.
The CM3212 supports Suspend-To-RAM (STR) and
ACPI compliance with Shutdown Mode which tri-states
VTT to minimize quiescent system current.
The CM3212 is available in a space saving TDFN-8
and SOIC-8 surface mount packages. Low thermal
resistance allows them to withstand high power
dissipation at 85°C ambient. The CM3212 can operate
over the industrial ambient temperature range of –40°C
to 85°C.
he CM3212 is a dual-output low noise linear regulator
TT
supply. With integrated power MOSFETs the
VDDQ
Fax: 408.263.7846
DL0
DLn
RTn
DDQ
4.7μ
10V
cer
supply and termination voltage
C
RT0
DDQ
220μ
10V
www.cmd.com
REF
0.1μF/10V
Memory
CM3212
C
REF
VDDQ
D D R
1

Related parts for CM3212-02SM

CM3212-02SM Summary of contents

Page 1

... SSTL-2 and SSTL-3 specifications for DDR-SDRAM V V supply. With integrated power MOSFETs the TT CM3212 can source VDDQ continuous current, and source or sink VTT continuous current. The typical dropout voltage for VDDQ is 500mV at 2A load current. The CM3212 provides excellent full load regulation and fast response to transient load changes ...

Page 2

... GND. ● ● Tel: 408.263.3214 Issue A – 05/19/09 CM3212 Top View (Pins Down View VDDQ 2 7 EN_VTT 3 6 ADJSD 4 5 VREF 8-Lead SOIC Package CM3212-02SM . DDQ /2. Bypass DDQ is enabled. During Manual DDQ DDQ DDQ output. TT ● Fax: 408.263.7846 www.cmd.com is output ...

Page 3

... California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 PART NUMBERING INFORMATION Package Ordering Part Number TDFN CM3212-02DE SOIC CM3212-02SM ABSOLUTE MAXIMUM RATINGS layers PCB with thermal vias. ● Tel: 408.263.3214 Issue A – 05/19/09 CM3212 Lead-free Finish ...

Page 4

... DDQ 10mA ≤ I ≤ 2A (4) DDQ 3.0V ≤ VIN ≤ 3.6V 0.1A DDQ ( DDQ ( 100mA TT ● ● Tel: 408.263.3214 Fax: 408.263.7846 Issue A – 05/19/09 CM3212 RATING UNITS °C 3 2.5 A μF 220 3 ±2.0 A ±2.50 A μF 220 3 ...

Page 5

... REF =C =47μ 25°C unless otherwise specified. DDQ TT A Current Limit Vref1 Vref Current Limit Current Limit CM3212 ● ● Tel: 408.263.3214 Fax: 408.263.7846 Issue A – 05/19/09 CM3212 (SEE NOTE 1) MIN TYP MAX UNITS –30 – ±2.0 ±2.5 A μA 10 1.225 1.250 1 ...

Page 6

... VIN i =3.3V = 100 T A 3.0 4.0 VIN i =3.3V Vin 2V/div VDDQ 1V/div VTT 1V/div ● Tel: 408.263.3214 Issue A – 05/19/09 CM3212 VDDQ vs. Temperature VIN =3.3V I =10mA O -40 - 100 120 140 o TEMPERATURE ( C ) VDDQ Dropout vs. IDDQ Vout=100mV 0 0 0.5 1.0 1 ...

Page 7

... TIME (0.2ms/div) © 2009 California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 0.5A/div -0.75A V TT 0.1V/div ● ● Tel: 408.263.3214 Issue A – 05/19/09 CM3212 VTT Transient Response V = 3.3V +0.75A IN TIME (0.2ms/div) ● Fax: 408.263.7846 www.cmd.com 7 ...

Page 8

... DDR SDRAM. 1 typical CM3212 Regulator supply DDQ The CM3212 dual output linear regulator provides all of the power requirements of DDR memory by combining , is half of TT two linear regulators into a single package. VDDQ regulator can supply current, and the two- ...

Page 9

... ADJSD Pin and an external and GND, DDQ shutdown signal to prevent interference with the ADJ pin’s normal operation. When the diode anode is pulled low, or left open, the CM3212 is again enabled. For Shutdown operation, observe the following: V DDQ V TT ...

Page 10

... AMB D CA When a CM3212 using TDFN-8 package is mounted on a double-sided printed circuit board with four square inches of copper allocated for “heat spreading,” the θ is approximately 55°C/W. Based temperature limit of 170°C temperature of 85°C, the available power of the package will be: 170° ...

Page 11

... Mechanical Details TDFN-08 Mechanical Specifications The CM3212-02DE is supplied in an 8-lead, 0.65mm pitch TDFN package. Dimensions are presented below. PACKAGE DIMENSIONS Package TDFN JEDEC MO-229 (Var. WEEC-1) No. Leads Millimeters Dim. Min Nom Max A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A2 0.45 0.55 0. ...

Page 12

... Mechanical Details (cont’d) SOIC-8 Mechanical Specifications The CM3212-02SM is supplied in an 8-pin SOIC package. Dimensions are presented below. For complete information on the SOIC-8, see the California Micro Devices SOIC Package Information document. PACKAGE DIMENSIONS Package SOIC Pins Millimeters Dimensions Min Max A 1 ...

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