G2992B Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 2A DDR Bus Termination Regulator

Global Mixed-mode Technology
G2992B
2A DDR Bus Termination Regulator
Features
„ V_CNTL Supply Voltage: 3V to 5.5V
„ Termination Supply Voltage: 1.2V to 3.6V
„ Support DDR I(1.25V_TT), DDR II (0.9 V_TT), and
DDR III(0.75V_TT) Requirements
„ Requires Only 20µF Ceramic Output Capacitor
„ Low Output Offset
„ 2A Source and Sink Current
„ Low External Component Count
„ No Inductor Required
„ Thermal Shutdown Protection
„ Over Current Protection
„ Suspend to RAM (STR) Function with
High-impedance Output
„ SOT-23-5, SOP-8 and MSOP-8 (FD) Package
Applications
„ DDR-SDRAM Termination Voltage
„ DDR I / DDR II / DDRIII Termination Voltage
„ SSTL-18
„ SSTL-2
„ SSTL-3
Ordering Information
ORDER
NUMBER
G2992BT11U
G2992BP11U
G2992BF51U
Note: T1: SOT-23-5 P1: SOP-8
1: Bonding Code
U: Tape & Reel
MARKING
292Bx
G2992B
G2992B
F5: MSOP-8 (FD)
Pin Configuration
General Description
The G2992B is a linear regulator designed to meet the
JEDEC SSTL-18, SSTL-2 and SSTL-3 (Series Stub
Termination Logic) specifications for termination of DDR
I/ II/ III -SDRAM. It contains a high-speed operational
amplifier that provides excellent response to the load
transients. This device can deliver 2A continuous cur-
rent in the application such as required for DDR I/ II/ III
SDRAM termination. The G2992B can easily provide
the accurate V_TT voltage with two external resistors
generating reference voltage. The quiescent current is
as low as 750µA @ V_CNTL = 3.3V. So the power con-
sumption can meet the low power consumption applica-
tions. The G2992B also has a shutdown function by
setting V_REF smaller than 0.2V, that provides Suspend
to RAM (STR) functionality. When in the shutdown
mode, the V_TT output (on V_OUT pin) will be tri-state pro-
viding a high impendence. A power saving advantage
can be obtained in this mode through lowering the qui-
escent current to 50μA @ V_CNTL = 3.3V.
TEMP.
RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PACKAGE
(Green)
SOT-23-5
SOP-8
MSOP-8 (FD)
G2992B
GND 1
5 VREF
VCNTL 2
VIN 3
4 VOUT
SOT-23-5
VIN 1
GND 2
VREF 3
VOUT 4
G2992B
SOP-8
8 VCNTL
VIN 1
G2992B
8 NC
7 VCNTL
6 VCNTL
GND 2
VREF 3
Thermal
Pad
7 NC
6 VCNTL
5 VCNTL
VOUT 4
5 NC
MSOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Ver: 0.8
May 07, 2013
TEL: [phone]
http://www.gmt.com.tw
1