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Systems designers know that before they can manage power, they need to measure it. Our power monitor ICs measure power, voltage, current and energy accumulation. For power monitoring from 0 to 40V, our high-side current sensors include an I2C interface that is perfect for embedded computing, networking, industrial and artificial intelligence. To get ahead of the thermal curve, we also offer several devices that integrate both current and temperature sensors.

Key Benefits of Our Power Monitoring Solutions


  • Calculate power, reducing host code overhead
  • Require no filter circuits, saving circuitry costs
  • Sampling up to 2 seconds to deliver a better understanding of power consumption
  • Peak detection with duration setting to provide a unique energy alert

PAC19211

  • Digital and analog output for prototyping
  • 1% power measurement accuracy
  • Integrated average power measurement

EMC1702

  • Integrated temp sensors
  • Peak detection for amplitude and duration
  • 1% current measurement accuracy

PAC1934

  • Quad power/current sensor
  • Accumulates reading for 36 hours
  • 1 mA to 10A without configuration changes

MCP39F511A

  • Dual-mode AC & DC power monitoring IC
  • Auto-sensing and switching between power modes
  • 0.1% accuracy over a 4000:1 dynamic range

MCP39F511N

  • Dual-channel, single-phase power monitoring IC
  • 0.5% accuracy over a 4000:1 dynamic range
  • Six programmable event notifications

MCP39F521

  • Single-phase power monitoring IC
  • 0.1% accuracy over a 4000:1 dynamic range
  • Up to four devices on the same bus

Current/Voltage/Power Monitor ICs


Power/Current Monitors with I2C


View All Parametrics
Product Status Automotive Recommended 5K Pricing Description Vsense min FSR (mV) Vsense max FSR (mV) Vsense accuracy (% FSR max) Vbus Range min (V) Vbus Range max (V) Vbus accuracy (% FSR max) Sampling Interval min (msec) Sampling Interval max (msec) No Ambient Temperature Monitors No Remote Temperature Monitors Temperature Accuracy Typical (°) Temperature Accuracy Max (°) Alert/Therm Peak Detection Accumulator? Interface Address Select Packages
EMC1701-1 Samples Available No $0.76 Current/DC Power Sensor with Temperature Monitoring -10, -20, -40, -80 10, 20, 40, 80 0.9 3 24 0.05 2.5 2600 1 3 0.25 1 2 Hardware No SMBus/I2C 15 12/QFN
EMC1701-2 In Production No $0.65 Current/DC Power Sensor with Temperature Monitoring -10, -20, -40, -80 10, 20, 40, 80 0.9 3 24 0.05 2.5 2600 1 0 0.25 1 2 Software No SMBus/I2C 15 10/MSOP
EMC1702-1 In Production No $0.85 Current/DC Power Sensor with Temperature Monitoring -10, -20, -40, -80 10, 20, 40, 80 0.9 3 24 0.05 2.5 2600 1 0 0.25 1 2 Hardware No SMBus/I2C 15 12/QFN
EMC1704-1 In Production No Call for pricing Current/DC Power Sensor with Temperature Monitoring -10, -20, -40, -80 10, 20, 40, 80 0.9 3 24 0.05 2.5 2600 1 3 0.25 1 2 Software No SMBus/I2C 15 Please call for package information
EMC1704-2 In Production No $1.03 Current/DC Power Sensor with Temperature Monitoring -10, -20, -40, -80 10, 20, 40, 80 0.9 3 24 0.05 2.5 2600 1 3 0.25 1 2 Hardware No SMBus/I2C 15 16/QFN
PAC1710 In Production No $0.56 Current/DC Power Sensor -10, -20, -40, -80 10, 20, 40, 80 0.9 0 40 0.3 2.5 2600 0 0 0 1 No No SMBus/I2C 16 10/VDFN
PAC1720 In Production No $0.79 Dual Current/DC Power Sensor -10, -20, -40, -80 10, 20, 40, 80 0.9 0 40 0.3 2.5 2600 0 0 0 1 No No SMBus/I2C 16 10/VDFN
PAC1921 In Production No $0.67 Current/DC Power Sensor 0 100 0.4 0 32 0.4 0.9 2900 0 0 0 No SMBus/I2C 16 10/VDFN
PAC1931 In Production No $0.73 Single DC Power/Energy Monitor with Accumulator -100 100 0.9 0 32 0.5 0.98 125 0 0 0 0 0 Yes SMBus/I2C 16 16/WLCSP
PAC1932 In Production No $0.90 Dual DC Power/Energy Monitor with Accumulator -100 100 0.9 -0.2 32 0.5 0.98 125 0 0 0 Yes SMBus/I2C 16 16/UQFN, 16/WLCSP
PAC1933 In Production Consider: PAC1934 No $1.07 Triple DC Power/Energy Monitor with Accumulator -100 100 0.9 -0.2 32 0.5 0.98 125 0 0 0 Yes SMBus/I2C 16 16/UQFN, 16/WLCSP
PAC1934 In Production Consider: PAC1934 No $1.24 Quad DC Power/Energy Monitor with Accumulator -100 100 0.9 -0.2 32 0.5 0.98 125 0 0 0 Yes SMBus/I2C 16 16/UQFN, 16/WLCSP

Analog High Side Current Monitors


View All Parametrics
Product Status Automotive Recommended 5K Pricing Vin(V) Gain Rise and Fall Time (µs) VSENSE max (mV) Quiescent Current max (µA) Packages
HV7800 In Production No $0.45 8.0 - 450 Fixed, 1 0.7 - 2.0 500 50 5/SOT-23
HV7801 In Production No $0.45 8.0 - 450 Fixed, 5 0.7 - 2.0 500 50 5/SOT-23
HV7802 In Production No $0.52 8.0 - 450 Adjustable 0.7 - 1.4 500 50 8/MSOP

Reference Designs


Title Part Number Devices Supported
MCP3421 Weight Scale MCP3421DM-WS MCP3421, MCP6V07
MCP3421 Weight Scale ARD00354 MCP6N11, MCP6V26, MCP6V27
MCP6031 Photodiode PICtail Plus
MCP6031DM-PTPLS
MCP6031
MCP661 Line Driver Demo Board MCP661DM-LD MCP661
Thermocouple Auto-Zeroed Reference Design
MCP6V01RD-TCPL
MCP6V01, MCP9800
MCP6SX2 PGA Thermistor MCP6SX2DM-PCTLTH MCP6S22, MCP6S92
RTD Temp Sensor TMPSNS-RTD1 MCP3301, MCP41010, MCP6S26, PIC18F2550
Humidity Sensor PICtail PIC16F690DM-PCTLHS MCP6291, PIC16F690

Increase Software Power Measurement Accuracy in WIN10 Devices with the PAC1934

The PAC1934 power monitor with accumulation enables 99% accurate measurement of applications power in Windows® 10  OS devices such as laptops, tablets and cell phones.