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G2987

Global Mixed-mode Technology
Part Number G2987
Manufacturer Global Mixed-mode Technology
Description DDR Termination Regulator
Published Jan 25, 2016
Detailed Description Global Mixed-mode Technology DDR Termination Regulator G2987 Features „ Support DDR I (1.25 VTT), DDR II (0.9 VTT), DD...
Datasheet PDF File G2987 PDF File

G2987
G2987

Overview
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 G2987 G2987 TEMP.
RANGE -40°C~85°C -40°C~85°C Note: F1: SOP-8 (FD) F5: MSOP-8 (FD) 1: Bonding Code U : Tape & Reel PACKAGE (Green) SOP-8 (FD) MSOP-8 (FD) G2987 VIN 1 8 NC GND 2 VREF 3 VOUT 4 Thermal Pad 7 NC 6 VCNTL 5 NC SOP-8 (FD)/MSOP-8 (FD) Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
Typical Application Circuit VCNTL=3.
3V VIN=1.
8V 2N7002 EN VCNTL=3.
3V VIN=2.
5V 2N7002 EN DDR I R1 VIN VCNTL VREF VOUT R2 CSS GND CIN CCNTL RTT COUT...


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