AME9172AAZAZ [AME]
Bus Termination Regulator; 总线终端稳压器
| 型号： | AME9172AAZAZ |
| 厂家： | 
ANALOG MICROELECTRONICS |
| 描述： | Bus Termination Regulator |
| 文件： | 总16页 (文件大小：412K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AME, Inc.
AME9172
Bus Termination Regulator
nGeneral Description
The AME9172 is a voltage regulator which could con-
vert the input voltage ranging from 1.3V to 6V to an output
voltage that user settled. The regulator can provide sourc-
ing or sinking current. The AME9172 used in conjunc-
tion with series termination resistors, provides an excel-
lent voltage source for active termination schemes of high
speed transmission lines as those seen in high speed
memory buses and distributed backplane designs.
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.
nFeatures
lSupport Both DDR 1 (1.25VTT), DDR 2
(0.9VTT) & DDR 3 (0.75VTT) Requirements
lCapable of Sourcing and Sinking Current
lCurrent-limiting Protection
lThermal Protection
lIntegrated Power MOSFETs
lGeneratesTermination Voltages for SSTL-2
lHigh Accuracy Output Voltage at Full-Load
lAdjustable VOUT by External Resistors
lMinimum External Components
lShutdown for Standby or Suspend Mode
Operation with High-impedance Output
lAll AME’ s Lead Free Products Meet RoHS
Standards
nApplications
lDDR Memory Termination Supply
lActive Termination Buses
lDesktop PC/AGP Graphics
l Supply Splitters
lSet Top Box/IPC
1
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
nBlock Diagram
VCNTL
VIN
Thermal
Sensor
+
-
Thermal
VOUT
&
Over
Current
VCNTL
Protection
circuit
REFEN
+
-
GND
2
Rev. A.01
AME, Inc.
AME9172
Bus Termination Regulator
nApplication Circuit
AME9172AAHAZ
SOP-8
DDR_2.5V
VCC_3V
VIN
VCNT
VCNT
VCNT
VCNT
1
2
3
4
8
7
6
5
C2
C4
GND
REF
VOUT
470m
0.1m
R2
100K
DDR_VTT
1.25V/1.5A
R4
100K
C8
C6
4.7u
470u
AME9172AAHAZ
SOP-8
Fig 1 : Application Circuit AME9172AAHAZ
AME9172AAZAZ
SOP-8/PP
DDR_2.5V
VCC_3V
1
2
3
4
8
7
6
5
VIN
NC
NC
C4
470m
C3
0.1m
GND
REF
VOUT
R1
100K
VCNT
NC
DDR_VTT
1.25V/2A
R3
100K
C7
4.7m
C5
470m
AME9172AAZAZ
SOP-8/PP
Fig 2 : Application Circuit AME9172AAZAZ
3
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
nPin Configuration
Pin Configurations
Part Number
1
2
3
4
VCNTL
VCNTL
VCNTL
VCNTL
VIN
GND
8
7
6
AME9172AAHAZ
(SOP-8)
REFEN
VOUT
5
AME9172 Pin Assignment
Pin Configurations
Part Number
AME9172AAZAZ
(SOP-8/PP)
1
2
3
4
NC
VIN
GND
8
7
6
NC
VCNTL
NC
REFEN
VOUT
5
NC= No internal connection
= Thermal Pad (Connected to GND plane
for better heat dissipation). The Pad of dimension
is 0.090 x 0.090 (Inch)
AME9172 Pin Assignment
4
Rev. A.01
AME, Inc.
AME9172
Bus Termination Regulator
nOrdering Information
AME9172 x x x x x
Special Feature
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Number
of
Pins
Operating Ambient
Temperature Range
Pin Configuration
Package Type
Special Feature
-25OC to 85OC
A:
A: 1. VIN
H: SOP
A: 8
Z: Lead free
(SOP-8)
2. GND
Z: SOP/PP
3. REF
4. VOUT
5. VCNT
6. VCNT
7. VCNT
8. VCNT
A: 1. VIN
(SOP-8/PP)
2. GND
3. REF
4. VOUT
5. NC
6. VCNT
7. NC
8. NC
nOrdering Information
Operating Ambient
Temperature Range
Part Number
Marking*
Output Voltage Package
9172
AAHA
yyww
-25oC to 85oC
AME9172AAHAZ
N/A
N/A
SOP-8
9172
AAZA
yyww
-25oC to 85oC
AME9172AAZAZ
SOP-8/PP
Note: yyww represents the date code.
* A line on top of the first letter represents lead free plating such as 9172
Please consult AME sales office or authorized Rep./Distributor for package type availability.
5
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
nPin Description
Pin name
Pin Description
VIN
Power Input
GND
Ground
VCNTL
REFEN
VOUT
Driving Voltage
Input voltage reference & chip enable
Output Voltage
6
Rev. A.01
AME, Inc.
AME9172
Bus Termination Regulator
nAbsolute Maximum Ratings
Symbol
Parameter
Rating
Unit
V
VIN
Input Voltage. VIN to GND
Power Disspation
6
PD
Internally Limit
W
VESD
TSTG
TL
ESD Rating (Human Body Mode)
Storage Temperature
2
KV
OC
OC
150
Lead Temperature (Soldering. 5sec)
245
nThermal Characteristics
Symbol
Parameter
Symbol
Unit
Thermal Resistance In Case
SOP-8
25.7
12
OC/W
qJC
SOP-8/PP
nRecommended Operating Conditions
Symbol
Parameter
Rating
Unit
VIN
Supply Voltage to VIN
1.5 to 3.3
V
V
VCNT
*IOUT
TJ
Supply Voltage to VCNT
Output Current of VOUT Pin *
Junction Temperature
3.3
-2 to 2
A
oC
-25 to 125
* The symbol "+" means the VOUT sources current to load; the symbol "-" means the VOUT sinks current to
GND
7
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
nElectrical Specifications
Limits in standard typeface are for TA = 25℃, unless otherwise specified:
DDR1 => VIN = 2.5V, VCNTL = 3.3V, VREFEN = 0.5VIN. (Note2)
Test Condition
IOUT = 0A (Note 1)
Parameter
Symbol
Min
Typ
Max
Units
Output Offset Voltage
VOS
-20
0
20
mV
IL = 0 to 1.5A (Fig 4)
IL = 0 to -1.5A
-20
-20
1.8
1.6
1.3
2.5
0
20
20
4
Load Regulation
(DDR 1 / 2 / 3)
VLOAD
mV
V
0
DDR 1
2.5
1.8
1.5
3.3
1.4
Keep VCNTL
VIN on
³
VIN
DDR 2
4
Input Voltage Range
(DDR 1 / 2 / 3)
operation power on and
power off
DDR 3
4
VCNTL
ICNTL
DDR 1 / 2 / 3
6
Operating Current of VCNTL
Short Circuit Protection
No Load
Fig 6,7
mA
A
DDR 1 / 2 / 3 Current Limit
Over Temperature Protection
ILIMIT
2.0
Thermal Shutdown
Temperature
TSD
3.3V
V
5 V
£
125
£
CNTL
oC
Thermal Shutdown
Hysteresis
Guaranteed by design
30
Note1: VOS offset is the voltage measurement defined as VOUT subtracted from VREFEN
Note2: DDR3 => VIN = 1.5V, VCNTL = 3.3V, VREFEN = 0.5VIN
.
8
Rev. A.01
AME, Inc.
AME9172
Bus Termination Regulator
nTest Circuit
Fig 4: Output Voltage Tolerance, △VOUT
Fig 5: Current in Shutdown Mode, ISHDN
9
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
Figure 6: Current Limit for High Side, ICLHIGH
Figure 7: Current Limit for Low Side, ICLLOW
10
Rev. A.01
AME, Inc.
AME9172
Bus Termination Regulator
nTypical Characteristics
11
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
nOperation Waveforms DDR1
Load Transient Response
VIN=2.5V, VCNTL=3.3V
VREF is 1.25V supplied by a regulator
COUT=1000mF/35V
IOUT slew rate = +-0.25A/mS
+ 0 A → + 1.5 A → + 0 A
+ 0 A → + 2 A → + 0 A
+ 0 A → + 2.5 A → + 0 A
Ch1= IOUT , Ch4= VOUT
Ch1= IOUT , Ch4= VOUT
Ch1= IOUT , Ch4= VOUT
Load Transient Response
VIN=2.5V, VCNTL=3.3V
VREF is 1.25V supplied by a regulator
COUT=1000mF/35V
IOUT slew rate = +-0.25A/mS
- 0 A → - 1.5 A → - 0 A
- 0 A → - 2 A → - 0 A
- 0 A → - 2.5 A → - 0 A
Ch1= IOUT , Ch4= VOUT
Ch1= IOUT , Ch4= VOUT
Ch1= IOUT , Ch4= VOUT
Rev. A.01
12
AME, Inc.
AME9172
Bus Termination Regulator
nOperation Waveforms DDR3
Load Transient Response
VIN=1.5V, VCNTL=3.3V
VREF is 0.75V supplied by a regulator
COUT=1000mF/35V
IOUT slew rate = +-0.25A/mS
+ 0 A → + 1.5 A → + 0 A
+ 0 A → + 2 A → + 0 A
Ch1= IOUT , Ch4= VOUT
Ch1= IOUT , Ch4= VOUT
Load Transient Response
VIN=1.5V, VCNTL=3.3V
VREF is 0.75V supplied by a regulator
COUT=1000mF/35V
IOUT slew rate = +-0.25A/mS
- 0 A → - 1.5 A → - 0 A
- 0 A → - 2 A → - 0 A
Ch1= IOUT , Ch4= VOUT
Ch1= IOUT , Ch4= VOUT
13
Rev. A.01
AME, Inc.
Bus Termination Regulator
AME9172
nTape and Reel Dimension
SOP-8
P
PIN 1
W
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOP-8
12.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
SOP-8/PP
P
PIN 1
W
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOP-8/PP
12.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
14
Rev. A.01
AME, Inc.
AME9172
Bus Termination Regulator
nPackage Dimension
SOP-8
MILLIMETERS
INCHES
MIN MAX
SYMBOLS
MIN
1.35
0.10
MAX
1.75
0.30
Top View
Side View
0.05315 0.0689
0.00394 0.01181
0.05799 REF
A
A1
A2
B
C
D
E
C
1.473 REF
E
H
0.33
0.19
4.80
3.80
0.51
0.25
5.33
4.00
0.01299 0.02008
0.00748 0.00984
0.18898 0.20984
0.14961 0.15748
0.05000 BSC
D
L
θ
1.27 BSC
e
Front View
0.40
5.80
-
1.27
6.30
0.10
8o
0.01575 0.05000
0.22835 0.24803
L
7o(4X)
H
y
-
0.00394
8o
0o
0o
q
e
B
SOP-8/PP
MILLIMETERS
INCHES
SYMBOLS
MIN
-
MAX
1.700
0.150
1.550
0.250
4.150
6.300
0.700
0.510
5.120
MIN
-
MAX
0.067
0.006
0.061
0.010
0.163
0.248
0.028
0.020
0.202
A
A1
A2
C
0.050
1.350
0.100
3.750
5.700
0.300
0.310
4.720
0.002
0.053
0.004
0.148
0.224
0.012
0.012
0.186
E
E1
L
b
D
1.270 BSC
0.05 BSC
e
0o
8o
0o
8o
q
15
Rev. A.01
www.ame.com.tw
E-Mail: sales@ame.com.tw
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
ã AME, Inc. , September 2007
Document: 5007-DS9172-A.01
Corporate Headquarter
AME, Inc.
U.S.A (Subsidiary)
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201
Santa Clara, CA. 95054-2046
Tel : (408) 988-2388
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan.
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989
Fax: (408) 988-2489
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