CM3202-00SM CALMIRCO [California Micro Devices Corp], CM3202-00SM Datasheet

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CM3202-00SM

Manufacturer Part Number
CM3202-00SM
Description
DDR VDDQ and Termination Voltage Regulator
Manufacturer
CALMIRCO [California Micro Devices Corp]
Datasheet
Features
Applications
© 2006 California Micro Devices Corp. All rights reserved.
05/08/06
Typical Application
Two linear regulators
-Maximum 2A current from V
-Source and sink up to 2A V
1.7V to 2.8V adjustable V
500mV typical V
V
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 with short-circuit foldback and
thermal shutdown for V
Fast transient response
5mA quiescent current
TDFN-8 and SOIC-8 packages for high performance
thermal dissipation and easy PC board layout
Optional RoHS Compliant Lead-free packaging
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
TT
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
tracking at 50% of V
220u
3.3V
4.7u
DDQ
DDR V
220u
dropout voltage at 2A
1
2
3
4
DDQ
DDQ
DDQ
VIN
VIN
VTT
GND
4.7u
and V
TT
CM3202
DDQ
output voltage
DDQ
current
TT
ADJSD
VDDQ
VDDQ
GND
and Termination Voltage Regulator
VTT
8
7
6
5
S/D
l
220u
Tel: 408.263.3214
887
845
4.7u
Product Description
T
designed to meet SSTL-2 and SSTL-3 specifications
for DDR-SDRAM V
V
CM3202 can source up to 2A of V
source or sink up to 2A V
out voltage for V
The CM3202 provides fast response to transient load
changes. Load regulation is excellent, less than 1%,
from no load to full load. It also has built-in over-current
limits and thermal shutdown at 170°C.
The CM3202 is packaged in an easy-to-use TDFN-8
and SOIC-8. Low thermal resistance (55°C/W) allows it
to withstand 1.55W
can operate over the industrial ambient temperature
range of –40°C to 85°C.
Note
If TDFN-8 is mounted on a double-sided printed circuit board with
two square inches of copper area, it can to withstand 2W dissipation
at 85°C ambient then.
1.25V , 2.5A
C hip
S et
he CM3202 is a dual-output low noise linear regulator
TT
(1)
supply.
:
1k
VDDQ
l
Fax: 408.263.7846
With integrated power MOSFET’s, the
DDQ
DL0
DLn
DDQ
RTn
(1)
is 500 mV at 2A load current.
V
REF
dissipation at 85°C ambient. It
supply and termination voltage
RT0
TT
current. The typical drop-
l
PRELIMINARY
www.cmd.com
VDDQ
REF
1u
DDQ
Memory
CM3202
current, and
D D R
1

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CM3202-00SM Summary of contents

Page 1

... California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 05/08/06 and Termination Voltage Regulator Product Description he CM3202 is a dual-output low noise linear regulator T designed to meet SSTL-2 and SSTL-3 specifications for DDR-SDRAM V V supply. TT CM3202 can source ...

Page 2

... PRELIMINARY CM3202 TOP VIEW GND 3 V PAD 8-Lead TDFN Package CM3202-00SM Lead-free Finish 1 Part Marking CM3202 CM3202 RATING [GND - 0.3] to +6.0 [GND - 0.3] to +6.0 [GND - 0.3] to +6.0 -65 to +150 -40 to +85 300 www.cmd.com l V DDQ ADJSD GND GND UNITS °C ° ...

Page 3

... REF I = 10mA 3.15V to 3.5V 3.15V 1.25V OUT V = 1.25V OUT -2A O Tel: 408.263.3214 l l PRELIMINARY CM3202 (SEE NOTE 1) MIN TYP MAX 3 3.3 3.6 2.5 200 200 5 2.8 1.235 1.250 1.265 30 200 1 = 10mA 1 500 2.8 2 170 50 Fax: 408.263.7846 www ...

Page 4

... California Micro Devices Corp. All rights reserved. 4 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 2.51 2.505 2. 5 2.495 2.49 2.75 3 3.25 Ta= Vin=3.3V Tel: 408.263.3214 l l PRELIMINARY CM3202 VDDQ vs. Temperature 10 12 -40 - Temperatur VDDQ Dropout vs. IDDQ Ta= IDDQ (A) Startup into Full Load ...

Page 5

... N. McCarthy Blvd., Milpitas, CA 95035-5112 05/08/06 (cont’ OUT V TT With TDFN-8 Package e I OUT V TT With SOIC-8 Package Tel: 408.263.3214 l PRELIMINARY CM3202 3. Step: -750mA ~ +750mA OUT ...

Page 6

... The outputs are restored when the voltage is lowered below V low-leakage diode in series with the Shutdown signal is recommended to avoid interference with the voltage adjustment setting. V regulator output voltage pin. DDQ Tel: 408.263.3214 Fax: 408.263.7846 l l PRELIMINARY CM3202 . DDQ output voltage is DDQ output at the point of DDQ - IN and V outputs. ...

Page 7

... reference voltage that tracks half of V REF 1%, and is compared with the V the receiver SSTL_2 Tel: 408.263.3214 l l PRELIMINARY CM3202 (see Figure 1 typical REF supply volt- DDQ , is half terminated signal at TT must be within ±40- ...

Page 8

... The tight tracking requirements and the need for V sink, as well as source, current provide unique chal- lenges for powering DDR SDRAM. CM3202 Regulator The CM3202 dual output linear regulator provides all of the power requirements of DDR memory by combining two linear regulators into a single TDFN-8 or SOIC-8 package. V ...

Page 9

... CM3202-00DE (TDFN-8) and 85-°C/Watt for CM3202-00SM (SOIC-8). Based on the over temperature limit of 170°C with an ambient of 85°C, the available power of the package will be: ...

Page 10

... Ground Plane © 2006 California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 05/08/06 heat transfer from the CM3202-00DE (TDFN-8) to ambient, approximately 85 °C/W for the CM3202-00SM (SOIC- 8). Top View Top Layer Copper Connects to Heat Spreader Vias (0.3mm Diameter) (TDFN-8 Package) ...

Page 11

... Mechanical Details TDFN-08 Mechanical Specifications The CM3202-00DE 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 6 Millimeters Dim. Min Nom Max A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A2 0.45 0.55 0.65 A3 0.20 b 0.25 0.30 0.35 D 3.00 D2 1.90 2.00 2.10 E 3.00 E2 1.60 1.70 1.80 e 0.65 K 0.20 L 0.20 0.30 0.45 # per 3000 pieces ...

Page 12

... Mechanical Details (cont’d) SOIC-8 Mechanical Specifications Dimensions for CM3202-00SM devices packaged in 8- lead SOIC packages with an intagrated heatslug are presented below. PACKAGE DIMENSIONS Package SOIC-8 Leads Millimeters Dimensions Min Max A 1.30 1.62 A 0.03 0. 0.33 0.51 C 0.18 0.25 D 4.83 5.00 E 3.81 3.99 e 1.27 BSC H 5.79 6.20 L 0.41 1.27 # per tube 100 pieces* ...

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