CM3202-00DE ON Semiconductor, CM3202-00DE Datasheet

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CM3202-00DE

Manufacturer Part Number
CM3202-00DE
Description
VDDQ/VTT TERMINATION REG WDFN8
Manufacturer
ON Semiconductor
Datasheet

Specifications of CM3202-00DE

Applications
Converter, DDR, DDR2
Voltage - Input
3.1 V ~ 3.6 V
Number Of Outputs
2
Voltage - Output
1.7 V ~ 2.8 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-WDFN
Mounting Style
SMD/SMT
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Features
Applications
©2010 SCILLC. All rights reserved.
May 2010 – Rev. 2
Two linear regulators
-Maximum 2A current from VDDQ
-Source and sink up to 2A VTT current
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
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
DDR VDDQ and VTT Termination
Product Description
T
regulator designed to meet SSTL-2 and SSTL-3
specifications for DDR-SDRAM V
termination voltage V
power MOSFET’s, the CM3202-00 can source up to
2A of VDDQ continuous current, and source or sink
up to 2A VTT continuous current.
dropout voltage for VDDQ is 500mV at 2A load
current.
The CM3202-00 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 thermal shutdown at 170°C.
The CM3202-00 supports Suspend-To-RAM (STR)
and ACPI compliance with shutdown mode which tri-
states VTT to minimize quiescent system current.
The CM3202-00 is packaged in an easy-to-use
TDFN-8. Low thermal resistance allows it to
withstand high power dissipation at 85°C ambient. It
operates over the industrial ambient temperature
range of –40°C to 85°C.
he CM3202-00 is a dual-output low noise linear
Voltage Regulator
TT
supply.
CM3202-00
Publication Order Number:
DDQ
With integrated
supply and
The typical
CM3202-00/D

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CM3202-00DE Summary of contents

Page 1

... SCILLC. All rights reserved. May 2010 – Rev. 2 DDR VDDQ and VTT Termination Voltage Regulator Product Description he CM3202- dual-output low noise linear T regulator designed to meet SSTL-2 and SSTL-3 specifications for DDR-SDRAM V termination voltage V power MOSFET’s, the CM3202-00 can source VDDQ continuous current, and source or sink VTT continuous current ...

Page 2

... Package Pinout/Pin Descriptions Top View Thermal Pad 8-Lead TDFN Package CM3202-00DE Rev. 2| Page www.onsemi.com CM3202-00 Bottom View ...

Page 3

... Note 1: Parts are shipped in Tape and Reel form unless otherwise specified. PIN DESCRIPTIONS output voltage adjustment available as long as V DDQ × = 1.25V -------------------- - DDQ R2 PART NUMBERING INFORMATION Package Ordering Part Number TDFN CM3202-00DE Rev Page www.onsemi.com . DDQ is enabled. During DDQ output voltage is set using an external DDQ Lead-free Finish 1 Part Marking CM320 200DE ...

Page 4

... Limited by the package thermal resistance, the maximum output current of the device cannot exceeds the limit imposed by the maximum power dissipation value. Note 2: Measured with the package using inch / 2 layers PCB with thermal vias. ABSOLUTE MAXIMUM RATINGS Rev. 2| Page www.onsemi.com CM3202-00 RATING UNITS [GND - 0.3] to +6.0 V [GND - 0 ...

Page 5

... CM3202-00 STANDARD OPERATING CONDITIONS PARAMETER Ambient Operating Temperature Range VDDQ Regulator DDR-1 Supply Voltage, VIN Load Current, Continuous Load Current, Peak ( DDQ VTT Regulator DDR-1 Supply Voltage, VIN Load Current, Continuous Load Current, Peak ( Supply Voltage Range IN VDDQ Source + VTT Source ...

Page 6

... TT Sink, -2A ≤ I ≤ 0 (Note 3) TT 3.1V ≤ V ≤ 3.6V 0. Source / Sink (Note 3) Thermal shutdown enabled =C =47μ 25ûC unless otherwise specified. DDQ TT A Rev. 2| Page www.onsemi.com CM3202-00 (SEE NOTE 1) MIN TYP MAX UNITS 0.1 0.5 mA 2.7 V 1.50 V 2.4 2.7 2.90 V ° ...

Page 7

... CM3202-00 Typical Operating Characteristics Rev Page www.onsemi.com ...

Page 8

... Typical Operating Characteristics Functional Block Diagram Rev. 2| Page www.onsemi.com CM3202-00 ...

Page 9

... CM3202-00 Application Information Powering DDR Memory Double-Data-Rate (DDR) memory has provided a huge step in performance for personal computers, servers and graphic systems apparent in its name, DDR operates at double the data rate of earlier RAM, with two memory accesses per cycle versus one. DDR SDRAM's transmit data at both the rising falling edges of the memory bus clock. DDR’ ...

Page 10

... TT fast transient response to load change in both directions. The V current. The CM3202-00 is designed for optimal operation from a nominal 3.3VDC bus, but can work with VIN as high as 5V. When operating at higher VIN voltages, attention must be given to the increased package power dissipation and proportionally increased heat generation. ...

Page 11

... D × ( θ AMB D CA When a CM3202-00 is mounted on a double-sided printed circuit board with four square inches of copper allocated for “heat spreading,” the θ with an ambient of 85ûC, the available power of the package will be: 170°C 85°C – ---------------------------------- - = 1.5W ⁄ D 55°C W limits the output current to approximately ± ...

Page 12

... PCB Layout Considerations TheCM3202-00 has a heat spreader attached to the bottom of the TDFN-8 package in order for the heat to be transferred more easily from the package to the PCB. The heat spreader is a copper pad of dimensions just smaller than the package itself. By positioning the matching pad on the PCB top layer to connect to the spreader during the manufacturing, the heat will be transferred between the two pads ...

Page 13

... CM3202-00 TDFN-08 Mechanical Specifications The CM3202-00DE is supplied in an 8-lead, 0.65mm pitch TDFN package. Dimensions are presented below. PACKAGE DIMENSIONS TDFN Package MO-229 (Var. WEEC-1) JEDEC No. 6 Leads Millimeters Dim. Min Nom Max 0.70 0.75 0.80 A 0.00 0.02 0.05 A1 0.45 0.55 0. ...

Page 14

... Tape and Reel Specifications PACKAGE SIZE PART NUMBER (mm) CM3202-00DE 3.00 X 3.00 X 0.75 POCKET SIZE (mm) TAPE WIDTH 3.30 X 3.30 X 1.00 12mm Rev. 2| Page www.onsemi.com CM3202-00 REEL QTY PER DIAMETER REEL P 0 330mm (13") 3000 4mm 8mm P 1 ...

Page 15

... CM3202-00 ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...

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