G2997/B 台湾致新代理商 GMT LDO系列 DDR终结器

Part Number	VDDQ (V)min.	VDDQ (V) max.	Isource(A)	Isink(V)	LVREF(mA)	VCNTL (V)	EN	Note	Package
G2997/B	1.2	3.6	4/3	4/3	10	3~5.5	S3/S5	DDR1/2/3/3L	MSOP-8(FD)/ MSOP-10(FD)/ TDFN3X3-10

General Description
The G2997 is a 3A sink/source tracking termination regulator. It is specifically designed for low-cost/ low-external component count systems. The G2997 maintains a high speed operational amplifier that pro-vides fast load transient response and only requires 20μF (2×10μF) of ceramic output capacitance. The G2997 supports remote sensing functions and all fea-tures required to power the DDR I / DDR II /DDR III /DDR IIIL VTT bus termination according to the JEDEC specification. In addition, the G2997 includes integrated sleep-state controls placing VTT in High-Z in S3 (suspend to RAM) and soft-off for VTT and VTTREF in S5 (Shutdown). The G2997 is available in the thermally efficient 8pin, 10pin MSOP (Thermal Pad) & 10pin TDFN.

Features
Support DDR I (1.25VTT), DDR II (0.9 VTT), DDR III (0.75 VTT), 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 Capacitance
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
MSOP-8 (FD) , MSOP-10 (FD) & TDFN3X3-10 Package

Applications
DDR I/II/III/IIIL Memory Termination
SSTL−2, SSTL−18
HSTL Termination

Ordering Information

ORDER NUMBER (Pb free/Green)	MARKING	TEMP. RANGE	PACKAGE
G2997F51U	G2997	40°C~ +85°C	MSOP-8
G2997F6U	G2997	40°C~ +85°C	MSOP-10(FD)
G2997RE1U	2997	40°C~ +125°C	TDFN3X3-10