AME
AME9172M
n
General Description
The AME9172M is a voltage regulator which could con-
vert the input voltage ranging from 1.2V to 3.0V to an
output voltage that user settled. The regulator can pro-
vide 2A sourcing or sinking current. The AME9172M used
in conjunction with series termination resistors, provides
an excellent voltage source for active termination schemes
of high speed transmission lines as those seen in high
speed memory buses and distributed backplane designs.
The AME9172M maintains stable, only requires 10µF (or
10µFx2) of ceramic output capacitance.
The voltage output of the regulator can be used as a
termination voltage for DDR SDRAM.
Current limits in both sourcing and sinking mode, plus
on-chip thermal shutdown make the circuit tolerant of the
output fault conditions.
Bus Termination Regulator
n
Applications
l
DDR Memory Termination Supply
l
Active Termination Buses
l
Desktop PC
l
Supply Splitters
l
Set Top Box/IPC
n
Features
l
Support All DDR2 (0.9VTT)
、
DDR3(0.75VTT) and DDR3L (0.675)
Requirements
l
Capable of Sourcing and Sinking 2A Current
l
Current-limiting Protection
l
Thermal Protection
l
Integrated Power MOSFETs
l
Generates Termination Voltages for SSTL-2
l
High Accuracy Output Voltage at Full-Load
l
Adjustable VOUT by External Resistors
l
Minimum External Components
l
Shutdown for Standby or Suspend Mode
Operation with High-impedance Output
l
All AME’ s Lead Free Products Meet RoHS
Standards
Rev.C.01
1
AME
AME9172M
n
Ordering Information
AME9172M - x x x
Bus Termination Regulator
Number of Pins
Package Type
Pin Configuration
Pin Configuration
PackageType
Number of
Pins
A: 8
A
(SOP-8/PP)
1. IN
2. GND
3. REFEN
4. OUT
5. NC
6. VCNTL
7. NC
8. NC
Z : SOP/PP
n
Available Options
Part Number
AME9172M-AZA
Marking
A9172M
AOyMXX
Output Voltage
N/A
Package
SOP-8/PP
Operating Ambient
Temperature Range
-40
o
C to +85
o
C
Note:
1. The first 2 places represent product code. It is assigned by AME such as AO.
2. y is year code and is the last number of a year. Such as the year code of 2008 is 8.
3. A bar on top of first letter represents Green Part such as A9172M.
4. The last 3 places MXX represent Marking Code. It contains M as date code in "month", XX as LN code and
that is for AME internal use only. Please refer to date code rule section for detail information.
5. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package
type.
4
Rev.C.01
AME
AME9172M
n
Absolute Maximum Ratings
Parameter
Input Voltage. VIN to GND
ESD Classification
Bus Termination Regulator
Symbol
V
IN
Maximum
6
B*
Unit
V
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.
* HBM B: 2000V~3999V
n
Recommended Operating Conditions
Parameter
Supply Voltage to VIN
Supply Voltage to VCNTL
Output Current of VOUT Pin *
Junction Temperature Range
Storage Temperature Range
Ambient Temperature Range
Symbol
V
IN
VCNTL
*I
OUT
T
J
T
STG
T
A
Rating
( 1.5 to 2.5 ) ± 3%
( 3.3 or 5 ) ± 5%
-2 to 2
-40 to +150
-65 to +150
-40 to +85
Unit
V
V
A
o
C
C
C
o
o
*
The symbol "+" means the VOUT sources current to load; the symbol "-" means the VOUT sinks current
to GND
Rev.C.01
5
Analogue and Mixed Signal
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