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LMV7231

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Micropower, precision, hex comparator

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Data sheet

LMV7231

ACTIVE
Data sheet Order now

Product details

Number of channels 6 Output type Open-collector, Open-drain Propagation delay time (µs) 5.6 Vs (max) (V) 5.5 Vs (min) (V) 2.2 Rating Catalog Features Hysteresis, Internal Reference Iq per channel (typ) (mA) 0.0076 Vos (offset voltage at 25°C) (max) (mV) 6 Rail-to-rail In Operating temperature range (°C) -40 to 125 Input bias current (±) (max) (nA) 5 VICR (max) (V) 5.5 VICR (min) (V) -0.3
Number of channels 6 Output type Open-collector, Open-drain Propagation delay time (µs) 5.6 Vs (max) (V) 5.5 Vs (min) (V) 2.2 Rating Catalog Features Hysteresis, Internal Reference Iq per channel (typ) (mA) 0.0076 Vos (offset voltage at 25°C) (max) (mV) 6 Rail-to-rail In Operating temperature range (°C) -40 to 125 Input bias current (±) (max) (nA) 5 VICR (max) (V) 5.5 VICR (min) (V) -0.3
WQFN (RTW) 24 16 mm² 4 x 4
  • (For VS = 3.3 V ±10%, Typical Unless Otherwise
    Noted)
  • Undervoltage and Overvoltage Detection
  • High Accuracy Voltage Reference: 400 mV
  • Threshold Accuracy: ±1.5% (Maximum)
  • Wide Supply Voltage Range 2.2 V to 5.5 V
  • Input and Output Voltage Range Above V+
  • Internal Hysteresis: 6 mV
  • Propagation Delay: 2.6 µs to 5.6 µs
  • Supply Current 7.7 µA Per Channel
  • 24-Lead WQFN Package
  • Temperature Range: –40°C to +125°C
  • (For VS = 3.3 V ±10%, Typical Unless Otherwise
    Noted)
  • Undervoltage and Overvoltage Detection
  • High Accuracy Voltage Reference: 400 mV
  • Threshold Accuracy: ±1.5% (Maximum)
  • Wide Supply Voltage Range 2.2 V to 5.5 V
  • Input and Output Voltage Range Above V+
  • Internal Hysteresis: 6 mV
  • Propagation Delay: 2.6 µs to 5.6 µs
  • Supply Current 7.7 µA Per Channel
  • 24-Lead WQFN Package
  • Temperature Range: –40°C to +125°C

The LMV7231 device is a 1.5% accurate Hex Window Comparator which can be used to monitor power supply voltages or any other analog output, such as an analog temperature sensor or current-sense amplifier. The device uses an internal 400-mV reference for the comparator trip value. The comparator set points can be set through external resistor dividers. The LMV7231 has 6 outputs (CO1 to CO6) that signal an undervoltage or overvoltage event for each power supply input. An output (AO) is also provided to signal when any of the power supply inputs have an overvoltage or undervoltage event. This ability to signal an undervoltage or overvoltage event for the individual power supply inputs, in addition to an output to signal such an event on any of the power supply inputs, adds unparalleled system protection capability.

The 2.2-V to 5.5-V power supply voltage range, low supply current, and input or output voltage range above V+ make the LMV7231 ideal for a wide range of power supply monitoring applications. Operation is ensured over the –40°C to +125°C temperature range. The device is available in a 24-pin WQFN package.

The LMV7231 device is a 1.5% accurate Hex Window Comparator which can be used to monitor power supply voltages or any other analog output, such as an analog temperature sensor or current-sense amplifier. The device uses an internal 400-mV reference for the comparator trip value. The comparator set points can be set through external resistor dividers. The LMV7231 has 6 outputs (CO1 to CO6) that signal an undervoltage or overvoltage event for each power supply input. An output (AO) is also provided to signal when any of the power supply inputs have an overvoltage or undervoltage event. This ability to signal an undervoltage or overvoltage event for the individual power supply inputs, in addition to an output to signal such an event on any of the power supply inputs, adds unparalleled system protection capability.

The 2.2-V to 5.5-V power supply voltage range, low supply current, and input or output voltage range above V+ make the LMV7231 ideal for a wide range of power supply monitoring applications. Operation is ensured over the –40°C to +125°C temperature range. The device is available in a 24-pin WQFN package.
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Type Title Date
* Data sheet LMV7231 Hex Window Comparator With 1.5% Precision and 400-mV Reference datasheet (Rev. F) PDF | HTML 12 Jan 2016
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
EVM User's guide LMV7231 Evaluation Board 27 Jan 2012

Design & development

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Evaluation board

LMV7231EVAL — LMV7231 evaluation module for power supply sequencing

This evaluation board contains the LMV7231 Hex Window Comparator and allows for evaluation of the device.

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