DC2367A DDR/QDR Memory Bus Termination by Analog Devices

DDR/QDR Memory Bus Termination
Status: Production
Series: LTM4632
RoHS: Compliant
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The LTM4632 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 VTTR output. Both VTT and VTTR track and are equal to VDDQ/2. Housed in a 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA packages, the LTM4632 includes the switching controller, power FETs, inductors and support components. Alternatively, the power module can also be configured as a two phase single ±6A output VTT. Only a few ceramic input and output capacitors are needed to complete the design.The LTM4632 supports selectable Burst Mode operation (CH1 only) and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.Fault protection features include overvoltage input, overcurrent and overtemperature protection.The LTM4632 is RoHS compliant with Pb-free finish.

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Features

Complete DDR-QDR4 SRAM Power Solution Including VDDQ, VTT, VTTR (or VREF)
Solution in 0.5cm2 (Dual-Sided PCB)
Wide Input Voltage Range: 3.6V to 15V
3.3V Input Compatible with VIN Tied to INTVCC
0.6V to 2.5V Output Voltage Range
Dual ±3A DC Output Current with Sink and Source Capability
±1.5%, ±10mA Buffered VTTR = VDDQ/2 Output
3A VDDQ + 3A VTT or Dual Phase Single 6A VTT
±1.5% Maximum Total Output Voltage Regulation Error Over Load, Line and Temperature
Current Mode Control, Fast Transient Response
External Frequency Synchronization
Multiphase Parallelable with Current Sharing
Selectable Burst Mode® Operation
Overvoltage Input and Overtemperature Protection
Power Good Indicator
Ultrathin 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA Packages

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Alternative Descriptions

LTM4632EV DC to DC Converter and Switching Regulator Chip 1.4775VDC to 1.5225VDC/1.773VDC to 1.827VDC/2.4625VDC to 2.5375VDC/0.75VDC/0.9VDC/1.25VDC Output Demonstration Circuit | Richardson RFPD

DC2367A Development Boards & Evaluation Kits by Linear Technology

DEMO BOARD LTM4632EV UMODULE REGULATOR

Education Maker & Hobbyist Electronics>Development Boards & Evaluation Kits>Power Management Development Kits
Status: Unknown
Series: µModule Series
RoHS: Unknown
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Demonstration circuit DC2367A features the LTM®4632EV µModule® regulator, a tiny low-profile high-performance high efficiency dual step-down regulator for DDR power. LTM4632 has an operating input voltage range of 3.6V to 15V. The output voltage of channel 1 (VDDQ) is resistor programmable from 0.6V to 2.5V and is capable of delivering up to 3A of output current. The output voltage of channel 2 (VTT) is set to regulate ½ of the voltage on the VDDQIN pin which can provided by either the channel 1 output or an external reference voltage. It can source or sink up to 3A of output current. A 10mA buffered output of VDDQIN/2 is also provided for supplying VREF voltage for DDR memory. DC2367A also provides the option for paralleling channels 1 and 2 together for up to 6A capable VTT rail. LTM4632 is a complete DC/DC DDR dual point of load regulator in a low-profile thermally enhanced 6.25mm × 6.25mm × 1.82mm LGA package requiring only a few input and output capacitors. Output voltage tracking is available through the TRACK/SS pin for supply rail sequencing. External clock synchronization is available through the SYNC/MODE pin. For high efficiency at low load currents the MODE pin jumper (JP4) selects the Burst Mode® option for operation in less noise sensitive applications. The LTM4632 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2367A.

Features

Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LTM4632EV
Kit Application Type Power Management - Voltage Regulator
Application Sub Type Buck Regulator
Kit Contents Demo Board LTM4632EV
Product Range µModule Series
Automotive Qualification Standard -
SVHC No SVHC (15-Jan-2018)

Frequently Asked Questions

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What category does DC2367A fall under?

The DC2367A is listed under DDR/QDR Memory Bus Termination.

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Is the DC2367A RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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