DDR Termination Regulators | NCP51145

1.8A Source / Sink VTT DDR Termination Regulator

Obsolete

Datasheet

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Overview

The NCP51145 is a linear regulator designed to supply a regulated VTT termination voltage for DDR−II, DDR−III, LPDDR−III and DDR−IV memory applications. The regulator is capable of actively sourcing and sinking ±1.8 A peak currents while regulating an output voltage to within ±20 mV. The output termination voltage is regulated to track VDDQ / 2 by two external voltage divider resistors connectedto the PVCC, GND, and VREF pins.The NCP51145 incorporates a high−speed differential amplifier to provide ultra−fast response to line and load transients. Other features include source/sink current limiting, soft−start and on−chip thermal shutdown protection.

  • DDR−II / DR−III / DDR−IV SDRAM Termination Voltage
  • Low Power DDR−3LP

  • Motherboard, Notebook, and VGA Card Memory Termination
  • Set Top Box, Digital TV, Printers

  • For DDR VTT Applications, Source/Sink Currents
  • Supports DDR−II to ±1.8 A, DDR−III to ±1.5 A
  • Supports LPDDR−III and DDR−IV to ±1.2 A
  • Stable Using Ceramic−Only (Very Low ESR) Capacitors
  • Integrated Power MOSFETs
  • High Accuracy VTT Output at Full−Load
  • Fast Transient Response
  • Built−in Soft−Start
  • Shutdown for Standby or Suspend Mode
  • Integrated Thermal and Current−Limit Protection

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

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ON Target

DDR Memory Type

IOUT VTT Max (A)

IQ Typ (µA)

VCC Bias Min (V)

VCC Bias Max (V)

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Reference Price

NCP51145MNTAG

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Obsolete

CAD Model

Pb

A

H

P

DFN-8

506AA

1

260

REEL

3000

N

DDR

DDR2

DDR3

DDR4

1.8

1000

4.75

5.25

No

No

Price N/A

More Details

NCP51145PDR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8 NB EP

751BU

2

260

REEL

2500

N

DDR

DDR2

DDR3

DDR3L

DDR4

1.8

1000

4.75

5.25

No

No

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: NCP51145MNTAG

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

More Details

Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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