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Solutions Search - DDR Memory Termination Solutions

LTC3623 High Efficiency ±5A Vtt Supply for DDR Termination

Aug 15th 2016
TheLTC3623 is a high efficiency, monolithic synchronous buck regulator in which the output voltage is programmed with a single external resistor. The accurate internally generated 50µA current source on the ISET pin allows the user to program an output voltage from 0V to 0.5V below VIN. The user can also directly drive ...

Circuit 

 

LTM4632 3.6V to 15V Input, 1.5V/3A VDDQ, 0.75V/±3A VTT and 10mA VTTR Design

Mar 16th 2016
The LTM®4632 is an ultrathin triple output step-down μModule® (power module) regulator to provide complete power solution for DDR-QDR4 SRAM. Operating from a 3.6V to 15V input voltage, the LTM4632 supports two ±3A output rails, both sink and source capable, for VDDQ and VTT, plus a 10mA low noise reference ...

Circuit 

 

LTM4632 4V to 15V Input, Two Phase Single Output ±6A VTT Termination Design with LTM4630 36A VDDQ Supply

Mar 16th 2016
The LTM®4632 is an ultrathin triple output step-down μModule® (power module) regulator to provide complete power solution for DDR-QDR4 SRAM. Operating from a 3.6V to 15V input voltage, the LTM4632 supports two ±3A output rails, both sink and source capable, for VDDQ and VTT, plus a 10mA low noise reference ...

Circuit 

 

LTM4632 3.3V Input, 1.5V/3A VDDQ, 0.75V/±3A VTT and 10mA VTTR Design

Mar 16th 2016
The LTM®4632 is an ultrathin triple output step-down μModule® (power module) regulator to provide complete power solution for DDR-QDR4 SRAM. Operating from a 3.6V to 15V input voltage, the LTM4632 supports two ±3A output rails, both sink and source capable, for VDDQ and VTT, plus a 10mA low noise reference ...

Circuit 

 

LTM4632 Two Module in Parallel, 3.6V to 15V Input, 1.2V/6A VDDQ, 0.6V/±6A VTT and 10mA VTTR Design

Mar 16th 2016
The LTM®4632 is an ultrathin triple output step-down μModule® (power module) regulator to provide complete power solution for DDR-QDR4 SRAM. Operating from a 3.6V to 15V input voltage, the LTM4632 supports two ±3A output rails, both sink and source capable, for VDDQ and VTT, plus a 10mA low noise reference ...

Circuit 

 

DC1631A - LTC3876EUHF Demo Board | DDR2/3, VIN = 4.5V to 14V, VDDQ = 1.8V/1.5V @ 20A, VTT = 0.9V/0.75V @ ±10A

Jan 17th 2012
Demonstration circuit 1631A is a dual output DDR2 or DDR3 power supply that provides 20A at 1.8V or 1.5V (jumper-selectable) for VDDQ and ±10A for VTT (VTT = 0.5VDDQ). It also has a ±50mA VTTR reference output. The demo board has an operating voltage range of 4.5V to 14V and a nominal 400kHz switching frequency. ...

Demo Board 

 

DDR3 1.5V VDDQ/20A 0.75VTT/±10A 4.5V to 14V Input

Nov 28th 2011
The LTC3876 is a complete DDR power solution, compatible with DDR1, DDR2, DDR3 and future DDRX lower voltage standards. The LTC3876 includes VDDQ and VTT DC/DC controllers and a precision linear VTT reference. A differential output sense amplifier and precision internal reference combine to offer an accurate VDDQ supply. The ...

Circuit 

 

LTC3634 Dual 15V, 3A Monolithic Step-Down Regulator for DDR Power

Jeff Gruetter - Product Marketing Engineer Sep 21st 2011
The LTC®3634 is a high efficiency, dual-channel monolithic synchronous step-down regulator which provides power supply and bus termination rails for DDR1, DDR2, and DDR3 SDRAM controllers. The operating input voltage range is 3.6V to 15V, making it suitable for point-of-load power supply applications from a 5V or 12V input, ...

Video 

 

DC1726A - LTC3618EUF Demo Board | For DDR Termination, 2.25V ≤ VIN ≤ 5.5V, VDDQ = 1.5V/1.8V/2.5V @ ±3A, VTT = 0.5VDDQ @ ±3A, VTTR Current = ±10mA

Sep 1st 2011
Demonstration circuit 1726 is a dual high efficiency monolithic step-down (buck) DC/DC switching regulator designed for double-data-rate (DDR) memory termination in computer systems. The VDDQ output is capable of sourcing and sinking up to 3A with output voltages of 1.5V, 1.8V, 2.5V plus an optional voltage, selected using jumpers. ...

Demo Board LTspice 

 

DDR Memory Power Supply: 3.3Vin, 0.9V@+/-3A Vtt, 1.8V@3A Vddq, 0.9V@10mA Vref

Jul 26th 2011
The LTC3618 is a dual synchronous step-down regulator using a current mode, constant-frequency architecture. It provides a complete DDR solution with an input voltage range from 2.25V to 5.5V. The output of the first step-down regulator offers a high accuracy VDDQ supply. A buffered reference generates VTTR at 50% of VDDQIN ...

Circuit 

 

DC1839A - LTC3634EFE Demo Board (TSSOP) | VIN= 3.6V to 15V, VOUT1 =1.5V/1.8V/2.5V @ ±3A, VOUT2 =0.5VIN (VTT) @ ±3A, VOUT3 = 0.5VIN (VTTR) @ ±10mA

Jul 21st 2011
Demonstration circuit 1839A is a dual output regulator focused specifically for DDR memory power applications. It is built based on the LTC3634EFE (TSSOP-28E package), a high voltage dual channel, controlled on-time monolithic synchronous buck regulator. The DC1839A has an input voltage range of 3.6V to 15V. demo board's output ...

Demo Board 

 

DC1707A - LTC3617EUDD Demo Board | VIN=2.25V to 5.5V, Vout1 = 0.5VIN (VTT) @ ±6A, Vout2 = 0.5VIN (VTTR) @ ±10mA

Jul 21st 2011
Demonstration circuit 1707 is a high efficiency monolithic step-down DC/DC switching regulator designed for double-data-rate (DDR) memory termination in computer systems. The VTT output is capable of sourcing and sinking up to 6A with an output voltage equal to one-half the voltage applied to the VDDQIN terminal or one-half ...

Demo Board LTspice 

 

DDR Memory Power Supply: 2.5V to 5.5Vin, 0.75V@+/-6A Vtt, 0.75V@10mA Vref, 1MHz External Clock

Jun 20th 2011
The LTC3617 is a high efficiency monolithic synchronous buck regulator utilizing a current mode, constant frequency architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage equal to 0.5 • VDDQIN while sourcing and sinking up to 6A of load current. An internal amplifier ...

Circuit 

 

DDR Memory Power Supply: 2.5V to 5.5Vin, 1.25V@+/-6A Vtt, 1.25V@10mA Vref, 2.25MHz

Jun 20th 2011
The LTC3617 is a high efficiency monolithic synchronous buck regulator utilizing a current mode, constant frequency architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage equal to 0.5 • VDDQIN while sourcing and sinking up to 6A of load current. An internal amplifier ...

Circuit 

 

DDR Memory Power Supply: 3.6V to 15Vin, 1.8V@3A Vddq, 0.9V@+/-3A Vtt, 0.9V@10mA Vref

Jun 7th 2011
The LTC3634 is a high efficiency, dual-channel monolithic synchronous step-down regulator which provides power supply and bus termination rails for DDR1, DDR2, and DDR3 SDRAM controllers. The operating input voltage range is 3.6V to 15V, making it suitable for point-of-load power supply applications from a 5V or 12V input, as ...

Circuit 

 

DDR Memory Power Supply: 3.6V to 15Vin, VTT Powered from VDDQ

Jun 7th 2011
The LTC3634 is a high efficiency, dual-channel monolithic synchronous step-down regulator which provides power supply and bus termination rails for DDR1, DDR2, and DDR3 SDRAM controllers. The operating input voltage range is 3.6V to 15V, making it suitable for point-of-load power supply applications from a 5V or 12V input, as ...

Circuit 

 

DC1708A - LTC3634EUFD Demo Board (QFN) | VIN= 3.6V to 15V, VOUT1 =1.5V/1.8V/2.5V@±3A, VOUT2 = 0.5VIN (VTT)@±3A, VOUT3 = 0.5VIN (VTTR)@±10mA

Mar 23rd 2011
Demonstration circuit 1839A is a dual output regulator focused specifically for DDR memory power applications. It is built based on the LTC3634EUFD (4mm x 5mm QFN-28 package), a high voltage dual channel, controlled on-time monolithic synchronous buck regulator. The DC1839A has an input voltage range of 3.6V to 15V. demo board's ...

Demo Board 

 

DC1572A - LTC3615EFE Demo Board (TSSOP) | 2.25V ≤ VIN ≤ 5.5V, VOUT1 = 1.8V to 3.3V @ 3A, VOUT2 = 1.2V to 1.8V @ 3A

Jun 15th 2010
Demonstration circuit 1572 is a dual output regulator consisting of two constant-frequency step-down converters, based on the LTC3615 dual channel monolithic synchronous buck regulator in the TSSOP exposed pad package. The DC1572 has an input voltage range of 2.25V to 5.5V, with each regulator capable of delivering up to 3A ...

Demo Board LTpowerCAD LTspice 

 

LTC3616 DDR Termination With Ratiometric Tracking of VDD, 1MHz

Feb 16th 2010
The LTC®3616 is a low quiescent current monolithic synchronous buck regulator using a current mode, constant frequency architecture. The no-load DC supply current in sleep mode is only 70μA while maintaining the output voltage (Burst Mode operation) at no load, dropping to zero current in shutdown. The 2.25V to 5.5V input ...

Circuit 

 

2-Phase, Spread Spectrum, DDR Memory Supplies with Ceramic Output Capacitors

Mar 8th 2005
The LTC3776 is a 2-phase dual output synchronous stepdown switching regulator controller for DDR/QDR memory termination applications. The second controller regulates its output voltage to 1/2 VREF while providing symmetrical source and sink output current capability. ...

Circuit 

 

DDR Memory Power Supply: 3.3Vin, 1.5V@+/-3A Vtt (2.5V external reference)

Nov 13th 2002
The LTC3413 is a high efficiency monolithic synchronous step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage equal to (0.5)VREF while sourcing or sinking up to 3A of output current. An internal voltage ...

Circuit 

 

DDR Memory Power Supply: 3.3Vin, 0.9V@+/-3A Vtt (with 1.8V external reference)

Nov 13th 2002
Many DDR termination applications require the bus termination voltage to be stepped down from a higher system voltage while tracking one-half of a reference voltage. This option is allowable in most systems since a reference voltage is typically available. This circuit shows a solution for a 3.3V to 0.9V, ±3A termination supply ...

Circuit 

 

DDR Memory Power Supply: 4V to 24Vin, 1.25V@+/-10A Vtt (2.5V external reference)

Jan 2nd 2002
This circuit shows a ±10A design using LTC3717. The input voltage can vary from 5V to 24V. The input voltage can be below 5V if an external 5V bias is available for powering the VCC pin of LTC3717. This design uses only two SO-8 PowerPak MOSFETs from Siliconix to deliver ±10A current. To achieve a higher output current, use ...

Circuit 

 

DDR Memory Power Supply: 5V to 28Vin, 1.5V@+/-10A Vtt (3V external reference)

Jan 2nd 2002
The LTC3717 is a synchronous step-down switching regulator controller for double data rate (DDR) and Quad Data Rate (QDRTM) memory termination. The controller uses a valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor ...

Circuit 

 

DDR Memory Power Supply: 5Vin, 1.25V@+/-6A Vtt (2.5V external reference)

Nov 29th 2001
The LTC3831 is a high power, high efficiency switching regulator controller designed for DDR memory termination.The LTC3831 generates an output voltage equal to 1/2 of an external supply or reference voltage. The LTC3831 uses a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current ...

Circuit