G2986 Global Mixed-mode Technology LPDDR2/LPDDR3 Termination Regulator Features General Description 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 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 TDFN2X2-10 Package 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 provides fast load transient response and only requires 20µF (2×10µF) of ceramic output capacitance. The G2986 supports remote sensing functions and all features required to power the LPDDR2 /LPDDR3 /DDR IIIL VTT bus termination according to the JEDEC specification. In addition, the G2986 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 G2986 is available in the thermally efficient TDFN2X2-10. Applications DDR IIIL Memory Termination LPDDR2/LPDDR3 Memory Termination SSTL−2, SSTL−18 HSTL Termination Ordering Information ORDER NUMBER G2986K21U G2986K21D MARKING TEMP. RANGE 2986 2986 -40°C~85°C -40°C~85°C PACKAGE (Green) TDFN2X2-10 TDFN2X2-10 Note: K2:TDFN 2X2-10 1:Bonding Code U & D: Tape & Reel Pin Configuration Typical Application Circuit G2986 LPDDRII/LPDDRIII VDDQSNS 1 10 10 VIN VLDOIN 2 9 S5 VTT 3 8 GND PGND 44 7 S3 VTT VTTSNS 5 6 VTTREF PGND Thermal Pad (EP) 1.2V VDDQSNS DDR II VLDOIN C1 2x10µF TDFN2X2-10 Note: Recommend connecting the Thermal Pad to the GND or let it keep floating. VTTSNS VIN=3.3V VIN S5 S5 GND S3 S3 VTTREF C2 0.1µF TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Aug 28, 2013 1