G2995P1UF
| Model | G2995P1UF |
| Description | DDR Termination Regulator |
| PDF file | Total 12 pages (File size: 273K) |
| Chip Manufacturer | GMT |
Global Mixed-mode Technology Inc.
G2995
DDR Termination Regulator
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
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 V
SENSE
pin, the G2995 can provide superior load regulation.
The G2995 provides a V
REF
output as the reference for
the applications of the chipset and DIMMs.
The G2995 can easily provide the accurate V
TT
and
V
REF
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.
Applications
DDR-SDRAM Termination Voltage
DDR-I / DDR-II Termination Voltage
SSTL-2
SSTL-3
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
MARKING
G2995
G2995
TEMP.
RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE
SOP-8
SOP-8 (FD)
Pin Configuration
Typical Application Circuit
G2995
NC
GND
VSENSE
VREF
1
2
3
4
8
7
6
5
VTT
PVIN
AVIN
VDDQ
47µF
+
V
DDQ
=2.5V
V
DDQ
V
REF
+
V
REF
=1.25V
0.01µF
Thermal
Pad
V
DD
=2.5V
AV
IN
PV
IN
V
SENSE
V
TT
GND
+
V
TT
=1.25V
220µF
SOP-8
Ver: 1.7
May 10, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
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