G2995 Datasheet, PDF (1/12 Pages) Global Mixed-mode Technology Inc – DDR Termination Regulator

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 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.
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
V_DDQ=2.5V
V_DDQ
V_REF
V_DD=2.5V
+
47µF
AV_IN
V_SENSE
PV_IN
V_TT
GND
+
V_REF=1.25V
0.01µF
V_TT=1.25V
+
220µF
Ver: 1.7
May 10, 2005
TEL: [phone]
http://www.gmt.com.tw
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