Global Mixed-mode Technology
DDR Termination Regulator
G2987
Features
Support DDR I (1.25 VTT), DDR II (0.9 VTT), DD...
Global Mixed-mode Technology
DDR Termination
Regulator
G2987
Features
Support DDR I (1.25 VTT), DDR II (0.9 VTT), DDR III (0.75 VTT), DDR IIIL (0.675VTT) and DDR IV (0.6 VTT) Requirements
VCNTL Supply Voltage: 3V to 5.5V Termination Supply Voltage : 1.2V to 3.6V Stable with Output Ceramic Capacitor Over Current Protection Thermal Shutdown Protection Shutdown Function for STR (S3) Mode Adjustable Output Voltage with Resistors Built-In Soft-Start Power MOS integrated SOP-8 (FD) and MSOP-8 (FD) Package RoHS Compliant
Applications
DDR I/II/III/IIIL/IV Memory Termination SSTL_3, SSTL_2, SSTL_18, SSTL_15 Notebook/Desktop/Server Telecom/Datacom, GSM Base Station,
LCD-TV/PDP-TV, Copier/Printer, Set-Top Box
Pin Configuration
General Description
The G2987 is a linear
regulator designed to meet the JEDEC SSTL (Series Stub Termination Logic) specifications in DDRI/II/III/IIIL/IV –SDRAM systems. It provides accurate and fast response with up to 1.8A source/sink ability in load transient to track reference voltage. The terminated voltage can be generated by two external resistors or programmed by forcing VREF pin at a desired voltage. Also the G2987 operate in low power consumption as low as 0.7mA and it has a shutdown function by setting VREF lower than 0.15V then the VTT is turned off and discharged via an internal MOSFET. This function obtains low quiescent current as 50μA for STR mode.
Ordering Information
ORDER NUMBER G2987F11U G2987F51U
MARKING
G...