CM3202-00 California Micro Devices Corporation, CM3202-00 Datasheet

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CM3202-00

Manufacturer Part Number
CM3202-00
Description
Ddr Vddq And Termination Voltage Regulator
Manufacturer
California Micro Devices Corporation
Datasheet

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Features
Applications
© 2006 California Micro Devices Corp. All rights reserved.
08/16/06
220uF/
Typical Application
10V
V
TT
Two linear regulators
1.7V to 2.8V adjustable VDDQ output voltage
500mV typical VDDQ dropout voltage at 2A
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
TDFN-8 RoHS compliant lead-free package
8-lead SOIC package
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
= 1.25V/2A
V
IN
= 3.3V to 3.6V
-Maximum 2A current from VDDQ
-Source and sink up to 2A VTT current
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
C
TT
4.7uF/
10V
cer
DDR VDDQ and VTT Termination Voltage Regulator
220u/
10V
1
2
3
4
C
VIN
NC
VTT
NC
IN
CM3202
4.7uF/10V
cer
ADJSD
VDDQ
GND
GND
VTT
8
7
6
5
220u/
10V
S/D
C
DDQ
Tel: 408.263.3214
R1
10k
10k
R2
V
DDQ
4.7uF/10V, cer
Product Description
T
designed to meet SSTL-2 and SSTL-3 specifications
for DDR-SDRAM V
V
CM3202 can source up to 2A of VDDQ continuous cur-
rent, and source or sink up to 2A VTT continuous cur-
rent. The typical dropout voltage for VDDQ is 500 mV
at 2A load current.
The CM3202 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 ther-
mal shutdown at 170° C.
The CM3202 supports Suspend To RAM (STR) and
ACPI compliance with Shutdown Mode which tri-states
VTT to minimize quiescent system current.
The CM3202 is packaged in an easy-to-use TDFN-8.
Low thermal resistance allows it to withstand high
power dissipation at 85° C ambient. It can operate over
the industrial ambient temperature range of –40° C to
85° C.
= 2.5V/2A
he CM3202 is a dual-output low noise linear regulator
TT
1. 25V , 2.5A
C hip
S et
supply.
1k
With integrated power MOSFET’s, the
Fax: 408.263.7846
VDDQ
DDQ
DL0
DLn
RTn
supply and termination voltage
V
REF
RT0
PRELIMINARY
www.cmd.com
VDDQ
REF
CM3202
1u/10V
cer
Memory
D D R
1

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CM3202-00 Summary of contents

Page 1

... SSTL-2 and SSTL-3 specifications for DDR-SDRAM V V supply. TT CM3202 can source VDDQ continuous cur- rent, and source or sink VTT continuous cur- rent. The typical dropout voltage for VDDQ is 500 load current. The CM3202 provides fast response to transient load changes ...

Page 2

... It is available as long as V DDQ + R1 R2 × -------------------- - = 1.25V DDQ R2 Tel: 408.263.3214 ● PRELIMINARY CM3202 Top View (Pins Down View 8-Lead SOIC Package CM3202-00SM F capacitor to GND. μ . DDQ Fax: 408.263.7846 www.cmd.com ● ● DDQ DDQ 08/16/06 ...

Page 3

... DDQ © 2006 California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 08/16/06 PART NUMBERING INFORMATION Package Ordering Part Number TDFN CM3202-00DE SOIC CM3202-00SM ABSOLUTE MAXIMUM RATINGS Tel: 408.263.3214 ● PRELIMINARY CM3202 Lead-free Finish 1 Part Marking CM320 200DE CM3202 00SM RATING [GND - 0 ...

Page 4

... TT 3.1V ≤ V ≤ 3.6V 0. Source / Sink (Note 4) Thermal shutdown enabled =C =47μ 25°C unless otherwise specified. DDQ TT A Tel: 408.263.3214 Fax: 408.263.7846 ● ● PRELIMINARY CM3202 ±2.0 mA ±2.50 mA 220 μF V 2.5 A 3.5 A °C MIN TYP MAX UNITS ...

Page 5

... 100 Vin=3.3V 3.0 4.0 Vin 2V/div VDDQ 1V/div VTT 1V/div 3.0 4.0 Tel: 408.263.3214 ● PRELIMINARY CM3202 VDDQ vs. Temperature -40 - 100 120 140 o TEMPERATURE ( C ) VDDQ Dropout vs. IDDQ = 0.5 1.0 1.5 2.0 IDDQ (A) Startup into Full Load UVLO TIME (1ms/div) Fax: 408 ...

Page 6

... TIME (0.2ms/div) Functional Block Diagram CM3202 © 2006 California Micro Devices Corp. All rights reserved. 6 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 I TT 0.5A/div -0.75A V TT 0.1V/div 1.22V Tel: 408.263.3214 ● ● PRELIMINARY CM3202 VTT Transient Response V = 3.3V +0.75A IN TIME (0.2ms/div) Fax: 408.263.7846 www.cmd.com ● 08/16/06 ...

Page 7

... The tight tracking requirements and the need for V sink, as well as source, current provide unique chal- lenges for powering DDR SDRAM. 1 typical CM3202 Regulator The CM3202 dual output linear regulator provides all half DDQ the power requirements of DDR memory by combining , ± ...

Page 8

... CM3202 is again enabled. IN Current Limit, Foldback and Over-temperature Pro- tection The CM3202 features internal current limiting with ther- mal protection. During normal operation, V the output current to approximately 2A and V and GND, DDQ the output current to approximately ±2A. When V ...

Page 9

... T P AMB D CA When a CM3202 is mounted on a double-sided printed circuit board with four square inches of copper allo- cated for “heat spreading,” the θ 55°C/W. 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

... 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 REF b 0.25 0.30 0.35 D 2.90 3.00 3.10 D2 2.20 2.30 2.40 E 2.90 3.00 3.10 E2 1.40 1.50 1.60 e 0.65 BSC K 0.20 L 0.20 0.30 0.40 # per ...

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