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PAC1931
  • PAC1931

PAC1931

In Production

The PAC1931 is a single power monitor and energy monitor that reports on bus voltage and sense voltage 16-bits of resolution.  Power is reported as a simultaneous product of two 16-bit independent bus and sense voltages.  All registers are accessible through I2C / SMBus including an 8 sample average for reading stability.

Microchip Technology PAC1931 Product Info

16 April 2026 0

Parameters

Description

Single DC Power/Energy Monitor with Accumulator

Vsense min FSR (mV)

-100

Vsense max FSR (mV)

100

Vsense accuracy (% FSR, max)

0.9

Vbus Range min (V)

0

Vbus Range max (V)

32

Vbus accuracy (% FSR, max)

0.5

Sampling Interval min (msec)

0.98

Sampling Interval max (msec)

125

Remote Temperature Monitors

0

# Ambient Temperature Monitors

0

Temperature Accuracy Typical (°)

0

Temperature Accuracy Max (°)

0

Alert/Therm

0

Accumulator?

Yes

Interface

SMBus/I2C

Address Select

16

# Current Channel

1

ADC Resolution (bit)

16

Features

  • 100mV full scale range for current sense voltage
  • Selectable bidirectional measurment capability
  • 0 to 32V input commen-mode voltage
  • External sense resistor sets full scale current range
  • 1% power measurement accuracy over a wide dynamic range
  • On-chip accumulation of 28-bit power results for engergy measurement
  • 48-bit power accumulator register
  • Sampling rates of 8, 64,256, and 1024 samples per second
  • At least 17 minutes of power accumulation data at 1024 samples per second
  • 2.7V to 5.5V operation
  • Separate Vdd for I/O pin
  • 1.62-5.5V capable SMBus and digital I/O
  • SMBus 3.0 and I2C Fast Mode Plus
  • WLCSP 2.225 x 2.17

Description

The PAC1931 is a single power monitor and energy monitor that reports on bus voltage and sense voltage 16-bits of resolution.  Power is reported as a simultaneous product of two 16-bit independent bus and sense voltages.  All registers are accessible through I2C / SMBus including an 8 sample average for reading stability.

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