AME9172M/Bus Termination Regulator

AME
AME9172M
n General Description
The AME9172M is a voltage regulator which could convert the input voltage ranging from 1.2V to 3.0V to an
output voltage that user settled. The regulator can provide 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.
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
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.
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
Bus Termination Regulator
AME9172M
n Function Block Diagram
VCNTL
IN
Thermal
Sensor
+
-
OUT
Thermal
&
Over Current
Protection
Circuit
VCNTL
REFEN
+
GND
n Application Circuit
DDR_1.5V
C1
0.1µF
C2
4.7µF
1 IN
NC
8
2 GND
NC
7
VCNTL
6
NC
5
3 REFEN
4 OUT
R2
100K
2
C3
20pF
GND_PAD
R1
100K
VCC_3.3V/5V
DDR_VTT
0.75V/2A
C4
4.7µF
C5
10µF
Rev.C.01
AME
AME9172M
Bus Termination Regulator
n Pin Configuration
SOP-8/PP
Top View
8
7
6
5
AME9172M-AZA
1. IN
2. GND
3. REFEN
4. OUT
AME9172M
5. NC
6. VCNTL
7. NC
8. NC
1
2
3
4
Die Attach:
Conductive Epoxy
Note:
The area enclosed by dashed line represents Exposed Pad and connect to GND.
n Pin Description
Pin Number
Pin name
1
IN
2
GND
3
REFEN
4
OUT
5
NC
6
VCNTL
7
NC
No internal connection
8
NC
No internal connection
Rev.C.01
Pin Description
Power Input
Ground
Input voltage reference & chip enable
Output Voltage
No internal connection
Driving Voltage
3
AME
Bus Termination Regulator
AME9172M
n Ordering Information
AME9172M - x x x
Number of Pins
Package Type
Pin Configuration
Pin Configuration
A
(SOP-8/PP)
1. IN
2. GND
3. REFEN
4. OUT
5. NC
6. VCNTL
7. NC
8. NC
PackageType
Z : SOP/PP
Number of
Pins
A: 8
n Available Options
Part Number
Marking
Output Voltage
Package
Operating Ambient
Temperature Range
AME9172M-AZA
A9172M
AOyMXX
N/A
SOP-8/PP
-40oC to +85oC
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
Bus Termination Regulator
n Absolute Maximum Ratings
Parameter
Input Voltage. VIN to GND
Symbol
Maximum
Unit
VIN
6
V
B*
ESD Classification
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.
* HBM B: 2000V~3999V
n Recommended Operating Conditions
Parameter
Symbol
Rating
Unit
VIN
( 1.5 to 2.5 ) ± 3%
V
VCNTL
( 3.3 or 5 ) ± 5%
V
Output Current of VOUT Pin *
*IOUT
-2 to 2
A
Junction Temperature Range
TJ
-40 to +150
o
Storage Temperature Range
TSTG
-65 to +150
o
Ambient Temperature Range
TA
-40 to +85
o
Supply Voltage to VIN
Supply Voltage to VCNTL
C
C
C
* The symbol "+" means the VOUT sources current to load; the symbol "-" means the VOUT sinks current
to GND
Rev.C.01
5
AME
Bus Termination Regulator
AME9172M
n Thermal Characteristics
Parameter
Package
Die Attach
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Symbol
Maximum
θ JC
19
Unit
o
SOP-8/PP
Internal Power Dissipation
Solder Iron (10Sec)**
Conductive Epoxy
θJA
84
PD
1450
350
C/W
mW
o
C
*Measure θJC on backside center of Exposed Pad.
** MIL-STD-202G 210F
6
Rev.C.01
AME
AME9172M
Bus Termination Regulator
n Electrical Specifications
Limits in standard typeface are for TA = 25OC, unless otherwise specified:
DDR3 => VIN = 1.5V, VCNTL = 3.3V, VREFEN = 0.5V IN
Parameter
Output Offset Voltage
Test Condition
Symbol
VOS
Load Regulation
(DDR 2 / 3)
VLOAD
Operating Current of VCNTL
ICNTL
Min
Typ
IOUT = 0A (Note 1)
-20
0
20
IL = 0 to 2A
-20
0
20
IL = 0 to -2A
-20
0
20
0.5
1.5
mA
4
A
No Load
Max Units
mV
mV
Short Circuit Protection
DDR 2 / 3 Current Limit
ILIMIT
2.0
Over Temperature Protection
Thermal Shutdown
Temperature
TSD
Guaranteed by design
VIH
Enable
V
Shutdown
POR Threshold
VCNTL_TH
POR Hysteresis
VCNTL_HYS
Short Circuit (Note 2)
Shutdown Current of VCNTL
170
o
Thermal Shutdown
Hysteresis
Shutdown Threshold
VCNTL= 3.3V or 5V
30
0.5
0.2
Rising Level
2.7
2.9
0.2
ISC_VIN
Sinking
ISC_GND
Sourcing
ICNTL_SD
VREFEN =0V, IOUT=0V (Fig 3)
C
50
V
V
V
1.5
A
1
50
90
µA
Note1: VOS offset is the voltage measurement defined as VOUT subtracted from VREFEN .
Note2: When testing short-circuit, VOUT must be lower than 0.4V.
Rev.C.01
7
AME
Bus Termination Regulator
AME9172M
n Test Circuit
3.3V/5V
1.5V
VCNTL
IN
VOUT
0.75V
REFEN
OUT
GND
IL
COUT
Fig 2: Output Voltage Tolerance, ∆VOUT
3.3V/5V
A
VCNTL
1.5V
IN
VOUT
0.75V
REFEN
0.75V
OUT
0V
0.2V
GND
RL
COUT
RL and C OUT
Time deleay
Fig 3: Current in Shutdown Mode, ISHDN
8
Rev.C.01
AME
AME9172M
Bus Termination Regulator
n Test Circuit
3.3V/5V
1.5V
VCNTL
IN
VOUT
0.75V
REFEN
OUT
A
GND
IL
COUT
Fig 4: Current Limit for High Side, ICLHIGH
Power Supply with Current Limit
3.3V/5V
VCNTL
0.75V
REFEN
GND
1.5V
IN
A
IL
VOUT
OUT
COUT
Fig 5: Current Limit for Low Side, ICLLOW
Rev.C.01
9
AME
Bus Termination Regulator
AME9172M
n Characterization Curve (For reference only)
Enable On From VREF
VIN=1.4V, VCNTL=5.0V
VREF = 0.5VIN, IOUT = 1A
VIN=1.4V, VCNTL=5.0V
VREF = 0.5VIN, IOUT = 1A
Ch1= VIN , Ch2= VREF
Ch3= VOUT , Ch4= IOUT
Ch1= VIN , Ch2= VREF
Ch3= VOUT , Ch4= IOUT
Dynamic Load
10
Enable Off From VREF
Dynamic Load
Frequency=2.5KHZ, VIN=1.4V
IOUT = 0.1A~1.8A and 1.8A~0.1A
VCNTL=5.0V, Source
Frequency=2.5KHZ, VIN=1.8V
IOUT = 0.1A~1.8A and 1.8A~0.1A
VCNTL=5.0V, Source
Ch1= VIN , Ch2= VCNTL
Ch3= VOUT , Ch4= IOUT
Ch1= VIN , Ch2= VCNTL
Ch3= VOUT , Ch4= IOUT
Rev.C.01
AME
AME9172M
Bus Termination Regulator
n Characterization Curve (For reference only)
Dynamic Load
Dynamic Load
Frequency=2.5KHZ, VIN=1.4V
IOUT = 0.1A~1.8A and 1.8A~0.1A
VCNTL=5.0V, Sink
Frequency=2.5KHZ, VIN=1.8V
IOUT = 0.1A~1.8A and 1.8A~0.1A
VCNTL=5.0V, Sink
Ch1= VIN , Ch2= VCNTL
Ch3= VOUT , Ch4= IOUT
Ch1= VIN , Ch2= VCNTL
Ch3= VOUT , Ch4= IOUT
Output Voltage vs Temperature
Output Voltage vs Temperature
0.76
0.92
Sink,V CNTL=3.3V
0.75
Output Voltage(V)
Output Voltage(V)
0.91
0.90
Sink,VCNTL=5.0V
Source,V CNTL =3.3V
0.89
0.88
Source,VCNTL=5.0V
0.87
Sink,VCNTL=3.3V
0.74
Source,V CNTL=5.0V
0.73
Source,VCNTL=3.3V
0.72
0.71
0.86
0.85
-50
VIN = 1.5V
VIN = 1.8V
0.70
-25
0
+25
+50
+75
o
Temperature ( C)
Rev.C.01
Sink,V CNTL =5.0V
+100
+125
-50
-25
0
+25
+50
+75
+100
+125
Temperature (o C)
11
AME
Bus Termination Regulator
AME9172M
n Characterization Curve(For reference only)
Source Current Limit vs Temperature
Sink Current Limit vs Temperature
3.50
2.40
V IN=2.55V
V IN=2.55V
2.35
Sink Current Limit (A)
Source Current Limit (A)
VIN=1.8V
3.00
2.50
2.00
V IN=1.2V
V IN=1.5V
1.50
1.00
0.50
0.00
-50
V CNTL=5.0V
-25
0
25
50
75
100
2.30
2.25
2.20
VIN=1.2V
2.15
2.10
V IN=1.5V
2.05
2.00
-50
125
VIN =1.8V
V CNTL=5.0V
-25
0
25
Output Ripple vs Temperature
20
18
16
16
14
TA=25O C
12
TA=-40 OC
10
8
O
6
TA=125 C
4
14
12
-1.5
-1.0
-0.5
0
0.5
1.0
6
1.5
0
-2.0
2.0
V IN = 1.5V
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
IOUT (A)
Output Voltage vs Output Current
0.80
0.95
O
T A=-40 C
Output Voltage (V)
Output Voltage (V)
TA=-40O C
8
2
1.00
0.90
T A=125OC
0.85
O
TA =25 C
0.80
O
-1.5
-1.0
TA=-40 C
0.75
O
TA=125 C
O
TA=25 C
0.70
DDR3
V CNTL = 5V
DDR2
VCNTL = 5V
-0.5
0
0.5
Output Current (A)
12
TA=25O C
10
Output Voltage vs Output Current
0.70
-2.0
TA=125 OC
125
4
V IN = 1.8V
IOUT (A)
0.75
100
Output Ripple vs Temperature
18
0
-2.0
75
Temperature (oC)
20
2
50
Temperature ( C)
Output Ripple(mV)
Output Ripple(mV)
o
1.0
1.5
2.0
0.65
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
Output Current (A)
Rev.C.01
AME
AME9172M
Bus Termination Regulator
n Date Code Rule
Month Code
1: January 7: July
2: February 8: August
3: March
9: September
4: April
A: October
5: May
B: November
6: June
C: December
n Tape and Reel Dimension
SOP-8/PP
P
PIN 1
W
AME
AME
Carrier Tape, Number of Components Per Reel and Reel Size
Rev.C.01
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
13
AME
Bus Termination Regulator
AME9172M
n Package Dimension
SOP-8/PP
TOP VIEW
SIDE VIEW
D1
θ
E1
E2
E
L1
C
PIN 1
D
A
A2
b
e
A1
FRONT VIEW
SYMBOLS
MILLIMETERS
MIN
MAX
MIN
MAX
A
1.350
1.750
0.053
0.069
A1
0.000
0.150
0.000
0.006
A2
1.350
1.600
0.053
0.063
C
0.100
0.250
0.004
0.010
E
3.750
4.150
0.148
0.163
E1
5.700
6.300
0.224
0.248
L1
0.300
1.270
0.012
0.050
b
0.310
0.510
0.012
0.020
D
4.720
5.120
0.186
0.202
1.270 BSC
e
14
INCHES
o
0.050 BSC
o
o
o
θ
E2
2.150
2.513
0.085
0.099
D1
2.150
3.402
0.085
0.134
0
8
0
8
Rev.C.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.
 AME, Inc. , April 2011
Document: 1299-DS9172M-C.01
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan.
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989