SC2595STRT Semtech

SC2595 Integrated Linear DDR Termination Regulator POWER MANAGEMENT Description Features The SC2595 is an integrated linear DDR termination Regulates while sourcing or sinking 1.5A device, which provides a complete solution for DDR AV range is from 2.5V to 5V CC termination designs while meeting the JEDEC require- Reference output ments of SSTL-2 specifications for DDR-SDRAM termi- Minimum number of external components nation. Accurate internal voltage divider SOIC8-EDP package.Pb-free,Halogen free, and RoHS/ The SC2595 can source and sink 1.5A current at the WEEE compliant output V while maintaining excellent load regulation. TT Applications V is designed to track the V voltage with a tight DDR memory termination TT REF tolerance over the entire current range while preventing High speed data line termination shoot through on the output stage. PC motherboards Graphics boards A V pin is incorporated to provide excellent load SENSE Disk drives regulation, along with a buffered reference voltage. CD-ROM drives The SC2595 incorporates a disable function built into the AV pin to tri-state the output during Suspend To CC Ram (STR) states. (Multiple patents pending.) Typical Application Circuit VDD SC2595 1 8 VTT NC VTT 2 7 GND PVCC 3 6 VSENSE AVCC 4 5 VREF VREF VDDQ September 24, 2009 1 www.semtech.comSC2595 POWER MANAGEMENT PRELIMINARY Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. PrPPPPraaaaarrrrraaaaammmmmeeeeettttteeeeerrr SlSSSmSlyyyyymmmmmbbbbbooooolll MMmMMmMsaaaaaxxxxxiiiiimmmmmuuuuumm UsUUUUsnnnnniiiiitttttss PVVCC, AVCC, VDDQ to GND -V0.3 to +6.0 CC Thermal Resistance Junction to Case C/W SOIC8-EDP JC 5.5 Thermal Resistance Junction to Ambient C/W JA SOIC8-EDP 36.5 OTperating Temperature Range -C40 to +105 A OTperating Junction Temperature Range -C40 to +150 J STtorage Temperature Range -C65 to +150 STG PTeak IR Reflow Temperature 10 - 40s 2C40 LEAD PTeak IR Reflow Temperature 10 - 40s 2C60 LEAD EDSD Rating (Human Body Model) E2S KV Operating Range PrPPPraaaarrrraaaammmmeeeetttteeeerr SSlSmSlyyyymmmmbbbbooooll MMmMmMsaaaaxxxxiiiimmmmuuuum UsUUUsnnnniiiitttts Parameter Symbol Maximum Units JTunction Temperature Range -C40 to +150 J AVVCC to GND A 2V.3 to 5.5 CC PVVCC to GND P 2V.3 to A V CC CC Electrical Characteristics o Specifications with standard typeface are for T = 25 C and limits in boldface type apply over the full Operating Temperature Range J o o (T = -40 C to +150 C). Unless otherwise specified, AV = PV = 2.5V, V = 2.5V. J CC CC DDQ PrPPPlPraaaaarrrrraaaaammmmmeeeeettttteeeeerrr SlSSSsSlyyyyymmmmmbbbbboooooll TTTsTsTneeeeesssssttttt CCCCCooooonnnnndddddiiiiitttttiiiiiooooonnnnnss MMMnMnMpiiiiinn TpTTTpTxyyyyypp MxMMMxMsaaaaaxx UUsUUsUnnnnniiiiitttttss RVeference Voltage I=20mA VDDQ/12.25 VDDQ/ V REF REF OUT - 40mV + 40mV (1) Load Regulation REG I : 0 to +1.5A -0.5 % LOAD LOAD I : 0 to -1.5A +0.5 LOAD VSTT Output Voltage Offset VO I =0A, V - V -020 +V20 m VTT OUT TT REF QIuiescent Current I=00A 4A0 Q LOAD AVCC Enable Threshold 2V.1 VZDDQ Input Impedance 1k00 VDDQ Note:Note: Note:Note:Note: (1) For Load Regulation, use a 10ms current pulse width when measuring V . TT 2009 Semtech Corp. 2 www.semtech.com