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PDF G2995 Data sheet ( Hoja de datos )
| Número de pieza | G2995 | |
| Descripción | DDR Termination Regulator | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de G2995 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Global Mixed-mode Technology Inc.
DDR Termination Regulator
G2995
Features
Operation Supply Voltage: 1.6V to 5.5V
Low Supply Current: 280µA @ 2.5V
Low Output Offset
Source and Sink Current
Low External Component Count
No Inductor Required
No external Resistors Required
Thermal Shutdown Protection
SOP-8L with Power-Pad package
Applications
DDR-SDRAM Termination Voltage
DDR-I / DDR-II Termination Voltage
SSTL-2
SSTL-3
General Description
The G2995 is a linear regulator designed to meet the
JEDEC SSTL-2 and SSTL-3 (Series Stub Termination
Logic) specifications for termination of DDR-SDRAM.
It contains a high-speed operational amplifier that pro-
vides excellent response to the load transients. This
device can deliver 1.5A continuous current and tran-
sient peaks up to 3A in the application as required for
DDR-SDRAM termination. With an independent VSENSE
pin, the G2995 can provide superior load regulation.
The G2995 provides a VREF output as the reference for
the applications of the chipset and DIMMs.
The G2995 can easily provide the accurate VTT and
VREF voltages without external resistors that PCB ar-
eas can be reduced. The quiescent current is as low
as 280µA @ 2.5V. So the power consumption can
meet the low power consumption applications.
Ordering Information
ORDER
NUMBER
G2995P1U
G2995F1U
Note: P1:SOP-8
U: Tape & Reel
ORDER NUMBER
(Pb free)
G2995P1Uf
G2995F1Uf
F1:SOP-8(FD)
(FD): Thermal Pad
Pin Configuration
MARKING
G2995
G2995
TEMP.
RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE
SOP-8
SOP-8 (FD)
Typical Application Circuit
NC 1
GND 2
VSENSE 3
VREF 4
G2995
SOP-8
8 VTT
7 PVIN
6 AVIN
5 VDDQ
Thermal
Pad
VDDQ=2.5V
VDDQ
VREF
VDD=2.5V
+
47µF
AVIN
VSENSE
PVIN
VTT
GND
+ VREF=1.25V
0.01µF
VTT=1.25V
+
220µF
Ver: 1.7
May 10, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page  
Global Mixed-mode Technology Inc.
G2995
Typical Performance Characteristics
AVIN=2.5V, PVIN=2.5V, VDDQ=2.5V, CAVIN=0.1µF, CPVIN=47µF, CVREF=0.01µF, CVTT=220µF, TA=25°C, unless other-
wise noted.
Maximum Sinking Current vs AVIN
(VDDQ=2.5V)
3
2.8
2.6
2.4
2.2
2
1.8
1.6
1.4
2 2.5 3 3.5 4 4.5 5 5.5
AVIN(V)
Maximum Sourcing Current vs AVIN
(VDDQ=1.8V, PVIN=1.8V)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2 2.5 3 3.5 4 4.5 5 5.5
AVIN(V)
Maximum Sinking Current vs AVIN
(VDDQ=1.8V)
2.8
2.6
2.4
2.2
2
1.8
1.6
1.4
1.2
1
2 2.5 3 3.5 4 4.5 5 5.5
AVIN(V)
VOSVTT vs Temperature(VDDQ=2.5V)
30
20 Sourcing 1.5A
10
No Load
0
-10
-20 Sinking 1.5A
-30
0
25 50 75 100
Temperature(℃)
125
Maximum Sourcing Current vs AVIN
(VDDQ=1.8V, PVIN=3.3V)
3 IO=200m
2.8
2.6
2.4
2.2
2
2 2.5 3 3.5 4 4.5 5 5.5
AVIN(V)
Ver: 1.7
May 10, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
5
5 Page 
Global Mixed-mode Technology Inc.
Package Information
G2995
C
EH
D
7 ° (4X)
L
θ
A2 A
y
A1
e
B
SOP-8L Package
Note:
1. Package body sizes exclude mold flash and gate burrs
2. Dimension L is measured in gage plane
3. Tolerance 0.10mm unless otherwise specified
4. Controlling dimension is millimeter converted inch dimensions are not necessarily exact.
5. Followed from JEDEC MS-012
SYMBOL
A
A1
A2
B
C
D
E
e
H
L
y
θ
MIN.
1.35
0.10
-----
0.33
0.19
4.80
3.80
-----
5.80
0.40
-----
0º
DIMENSION IN MM
NOM.
1.60
-----
1.45
-----
-----
-----
-----
1.27
-----
-----
-----
-----
MAX.
1.75
0.25
-----
0.51
0.25
5.00
4.00
-----
6.20
1.27
0.10
8º
MIN.
0.053
0.004
-----
0.013
0.007
0.189
0.150
-----
0.228
0.016
-----
0º
DIMENSION IN INCH
NOM.
0.063
-----
0.057
-----
-----
-----
-----
0.050
-----
-----
-----
-----
MAX.
0.069
0.010
-----
0.020
0.010
0.197
0.157
-----
0.244
0.050
0.004
8º
Ver: 1.7
May 10, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet G2995.PDF ] | |
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