G2986 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – LPDDR2/LPDDR3 Termination Regulator

Global Mixed-mode Technology
G2986
LPDDR2/LPDDR3 Termination Regulator
Features
„ Support 1.2V LPDDR2/LPDDR3 and DDR IIIL
(0.675VTT) Requirements
„ Input Voltage Range: 3V to 5.5V
„ VLDOIN Voltage Range: 1.2V to 3.6V
„ Requires Only 20µF Ceramic Output Capaci-
tance
„ Supports High-Z in S3 and Soft-Off in S5
„ Integrated Divider Tracks 1/2 VDDQSNS for
Both VTT and VTTREF
„ Remote Sensing (VTTSNS)
„ ±20mV Accuracy for VTT and VTTREF
„ 10mA Buffered Reference (VTTREF)
„ Built-In Soft-Start
„ Over Current Protection
„ Thermal Shutdown Protection
„ TDFN2X2-10 Package
Applications
„ DDR IIIL Memory Termination
„ LPDDR2/LPDDR3 Memory Termination
„ SSTL−2, SSTL−18
„ HSTL Termination
General Description
The G2986 is a 3A sink/source tracking termination
regulator. It is specifically designed for low-cost/
low-external component count systems. The G2986
maintains a high speed operational amplifier that pro-
vides fast load transient response and only requires
20µF (2×10µF) of ceramic output capacitance. The
G2986 supports remote sensing functions and all fea-
tures required to power the LPDDR2 /LPDDR3 /DDR
IIIL VTT bus termination according to the JEDEC
specification. In addition, the G2986 includes inte-
grated sleep-state controls placing VTT in High-Z in
S3 (suspend to RAM) and soft-off for VTT and
VTTREF in S5 (Shutdown). The G2986 is available in
the thermally efficient TDFN2X2-10.
Ordering Information
ORDER
NUMBER
G2986K21U
G2986K21D
Note: K2:TDFN 2X2-10
1:Bonding Code
U & D: Tape & Reel
MARKING
2986
2986
TEMP.
RANGE
-40°C~85°C
-40°C~85°C
PACKAGE
(Green)
TDFN2X2-10
TDFN2X2-10
Pin Configuration
Typical Application Circuit
VDDQSNS 1
VLDOIN 2
VTT 3
PGND 44
VTTSNS 5
G2986
Thermal
Pad
(EP)
1100 VIN
9 S5
8 GND
7 S3
6 VTTREF
TDFN2X2-10
Note: Recommend connecting the Thermal
Pad to the GND or let it keep floating.
1.2V
C1
2x10µF
LPDDRII/LPDDRIII
VDDQSNS VIN
DDR II
VLDOIN
S5
VTT
GND
PGND
S3
VTTSNS VTTREF
VIN=3.3V
S5
S3
C2
0.1µF
Ver: 0.2
Aug 28, 2013
TEL: [phone]
http://www.gmt.com.tw
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