Voltage Supervisors | NCP45491

4-Channel Voltage Bus and 4-Channel High-Side Current Shunt Monitor, 26 V

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Overview

The NCP45491 is a high-performance monolithic IC which can be used to monitor bus voltage and current on four high-voltage power supplies simultaneously. The HV bus voltages and currents are translated to a low-voltage power domain and multiplexed onto a single differential output for measurement externally by common ADCs. The device is configurable to operate either standalone or as a pair, permitting up to eight separate HV power supplies to be monitored and measured.

  • Power Monitoring and Management
  • Power Control Loops

  • Graphical Cards
  • Desktop Computers
  • Notebooks
  • Set-top boxes
  • Enterprise Servers
  • Telecom Equipment

  • Translates and scales voltage and currents on buses up to 26V
  • Single device monitors up to 4 supplies
  • Ultra-low offset shunt amplifier (<150μV)
  • May Be Paired for Monitoring Up To Eight Supplies
  • Very low power down current
  • All Channels Individually Gain Programmable by External Resistor Selection
  • Fast Settling Time
  • Real-Time Indication of All Bus Voltages Valid
  • Adjustable Output Common-Mode Voltage Adapts to Most External ADCs
  • Lead-Free Device

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Reliability Data

Die Related Summary Data

Device: NCP45491XMNTWG

Equivalent to wafer fab process: ONC25

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

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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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