EV20073DH-00A
2A, 1.30V – 6.0V
DDR Memory VTT Termination Regulator
EV20073DH-00A Rev. 1.0 www.MonolithicPower.com 1
10/10/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP20073 integrates the DDR memory
termination regulator with the output voltage
(VTT) and a buffered VTTREF whose output is
half of VREF.
The VTT-LDO is a 2A sink/source tracking
termination regulator. It is specifically designed
for low-cost/low-external component count
systems, where space is a premium.
The MP20073 maintains a fast transient
response only requiring 20uF (2x10uF) of
ceramic output capacitance. The MP20073
supports Kelvin sensing functions.
The MP20073 is available in the 8-pin MSOP
with Exposed PAD,package and is specified
from 40
o
C to 85
o
C.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Bias Voltage V
DRV
3.3 V
Input Voltage V
DDQ
1.3-1.8 V
Reference Input
Voltage
V
REF
V
DDR
V
Output Voltage V
TT
1/2 V
DDR
V
Output Current I
TT
±2
A
FEATURES
• VDDQ Voltage Range: 1.3V to 6.0 V
• Up to 2A Integrated Sink/Source Linear
Regulator with Accurate VDDQ/2 Divider
Reference for DDR Termination
• Requires Only 20uF Ceramic Output
Capacitance
• Drive Voltage Range: 3.3V
• 1.3V Input (VDDQ) Helps Reduce Total
Power Dissipation
• Integrated Divider Tracks VREF for VTT
and VTTREF
• Kelvin Sensing (VTTSEN)
• ±30mV Accuracy for VTT and VTTREF
• Built-In Soft-Start, UVLO and OCL
• Thermal Shutdown
APPLICATIONS
• Notebook DDR2/3 Memory Supply and
Termination Voltage in ACPI Compliant
• Active Termination Busses
“MPS” and “The Future of Analog IC Technology”, are Trademarks of Monolithic
Power Systems, Inc.
EV20073DH-00A EVALUATION BOARD
(L x W x H) 2.5” x 2.5” x 0.5”
(6.5cm x 6.5cm x 1.2cm)
Board Number MPS IC Number
EV20073DH-00A MP20073DH
Load Regulation
V
DRV
=3.3V,V
REF
=V
DDQ
=1.8V
OUTPUT VOLTAGE V
TT
(V)
LOAD CURRENT I
TT
( A )
0.86
0.87
0.88
0.89
0.90
0.91
0.92
0.93
0.94
-3 -1.8 -0.6 0.6 1.8 3 3.6
