CM3106-12SB CALMIRCO [California Micro Devices Corp], CM3106-12SB Datasheet

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CM3106-12SB

Manufacturer Part Number
CM3106-12SB
Description
2 Amp Source/ Sink Bus Termination Regulator
Manufacturer
CALMIRCO [California Micro Devices Corp]
Datasheet
02/02/04
Features
Applications
© 2004 California Micro Devices Corp. All rights reserved.
Simplified Electrical Schematic
Ideal for DDR-I and DDR-II V
Sinks and sources 2.0A for DDR-I
Over current protection
Over temperature protection
Integrated power MOSFETs
Excellent accuracy (0.5% load regulation)
Pin and functionally compatible with LP2995
8-lead SOIC and PSOP packages
Lead-free versions available
Single and Dual Channel DDR Memory
Bus Termination
Active Termination Buses
Graphics Card Memory Termination
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
2 Amp Source/ Sink Bus Termination Regulator
V
REF
Buffer
TT
Over Temp
Over Current
Reference
OUT
applications
AV
IN
IN
V
GND
DDQ
L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com
Driver
Product Description
The CM3106 is a sinking and sourcing regulator specif-
ically designed for providing power to DDR memory
terminating resistors and companion chip set V
power. The output voltage accurately tracks V
The CM3106 can source and sink current up to 2A,
ideal for DDR-I memory systems, and 1.2A for DDR-II
systems, while maintaining a load regulation of 0.5% in
either application.
The CM3106 provides over current and over tempera-
ture protection which protects the device from exces-
sive heating due to high current and high temperature.
A shutdown capability using an external transistor
reduces power consumption and provides a high
impedance output.
The CM3106 is housed in both 8-lead SOIC and PSOP
packages and is available with optional lead-free finish-
ing.
PV
IN
V
V
TT
SENSE
CM3106
DDQ
/2.
TT
1

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CM3106-12SB Summary of contents

Page 1

... A shutdown capability using an external transistor reduces power consumption and provides a high impedance output. The CM3106 is housed in both 8-lead SOIC and PSOP packages and is available with optional lead-free finish- ing ...

Page 2

... SENSE DDQ PIN DESCRIPTIONS Input PART NUMBERING INFORMATION Standard Finish Ordering Part 1 Number Part Marking CM3106-12SN CM310601S CM3106-12SB CM3106-12SB L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com TOP VIEW GND DDQ REF 8-lead PSOP ...

Page 3

... STANDARD OPERATING CONDITIONS CONDITIONS VTT 0A < I < 2.0A or -2.0A < I VTT V =2.5V, I =0A DDQ REF -5µA < I < 5µA REF L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com CM3106 RATING ±2000 -40 to +150 -40 to +85 (see note1) -40 to +150 Internally Limited °C/W. VALUE 2.5 2.5 2 +70 220 +20% ...

Page 4

... Figure 1. Output Voltage with AV Supply (V IN DDQ Figure 2. Load Regulation (Sink) © 2004 California Micro Devices Corp. All rights reserved. 4 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 =2.5V) L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com Figure 3. Reference Voltage with AV Supply (V =2.5V) IN DDQ Figure 4. Load Regulation (Source) CM3106 02/02/04 ...

Page 5

... Typical DC Characteristics (nominal conditions unless otherwise specified) Figure 5. Over Current Limit (Sink) Figure 6. AV Supply Current with Supply Voltage IN © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 02/02/04 Figure 7. Over Current Limit (Source) L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com CM3106 5 ...

Page 6

... Performance Information (cont’d) Typical Transient Characteristics (nominal conditions unless otherwise specified) Figure 8. Load Transient (0A to 2.0A Sink) © 2004 California Micro Devices Corp. All rights reserved. 6 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 Figure 9. Line Transient (0A to 2.0A Source) L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com CM3106 02/02/04 ...

Page 7

... CM3106-12SN and a maximum instantaneous current of 2A should ) consists prima- D not be exceeded for more than 29% of the time. For CM3106-12SB, the maximum RMS current increases from 1.3A to 2.2A. Thus, the maximum continuous cur- θ ) thermal CA rent can be 2A all the time. ...

Page 8

... Performance Information (cont’d) Typical Thermal Characteristics (cont’d) (nominal conditions unless otherwise specified) The theoretical calculations of these relationships show the safe operating area of the CM3106 in the SOIC package. Thermal characteristics were measured using a double sided board with two square inches of copper area connected to the GND pins for " ...

Page 9

... C AVIN 47µF PCB Layout Considerations The CM3106-12SB has a heat spreader attached to the underneath of the PSOP-8 package in order for heat to be transferred much easier from the package to the PCB. The heat spreader is a copper pad of dimen- sions just smaller than the package itself. By position- ...

Page 10

... Mechanical Details The CM3106 is available in an 8-lead SOIC and PSOP package. SOIC-8 Mechanical Specifications Dimensions for CM3106 devices packaged in 8-pin SOIC packages are presented below. For complete information on the SOIC-8 package, see the California Micro Devices SOIC Package Informa- tion document. ...

Page 11

... Mechanical Details PSOP-8 Mechanical Specifications Dimensions for CM3106 devices packaged in 8-pin PSOP packages with an intagrated heatslug are pre- sented below. PACKAGE DIMENSIONS Package PSOP-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 1.02 1.52 H 5.79 6.20 L 0.41 1.27 x** 3.30 3.81 y** 2.29 2.79 # per tube 100 pieces* # per tape ...

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