PAC1942 Series

Dual DC Power Monitor, 16-bit, 2 Alerts, I2C

Catalog

Dual DC Power Monitor, 16-bit, 2 Alerts, I2C

Part	Function	Voltage - Input [Min]	Voltage - Input [Max]	Package / Case	Accuracy	Current - Output	Sensing Method	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package
Microchip Technology PAC1942T-2E/4MXVAO	Current Monitor	2.7 V	5.5 V	16-VFQFN Exposed Pad	1 %	100 mA	Low-Side	Surface Mount Wettable Flank	-40 °C	125 °C	16-VQFN (3x3)
Microchip Technology PAC1942T-2E/4MX	Current/Voltage Monitor	2.7 V	5.5 V	16-VFQFN Exposed Pad	1 %		Low-Side	Surface Mount Wettable Flank	-40 °C	125 °C	16-VQFN (3x3)
Microchip Technology PAC1942T-1E/4MX	Current/Voltage Monitor	2.7 V	5.5 V	16-VFQFN Exposed Pad	1 %		Low-Side	Surface Mount Wettable Flank	-40 °C	125 °C	16-VQFN (3x3)
Microchip Technology PAC1942T-1E/4MXVAO	Current Monitor	2.7 V	5.5 V	16-VFQFN Exposed Pad	1 %	100 mA	High-Side	Surface Mount Wettable Flank	-40 °C	125 °C	16-VQFN (3x3)
Microchip Technology PAC1942T-1E/J6CX	Current/Voltage Monitor	2.7 V	5.5 V		1 %		Low-Side	Surface Mount	-40 °C	125 °C	16-WLCSP (2.23x2.17)

Catalog

Dual DC Power Monitor, 16-bit, 2 Alerts, I2C

Key Features

• Dual High Side Power Monitor (PAC1942-2 is a Low Side)* 100 mV Full Scale Range for Current Sense Voltage (Configurable to 50mV)

• * 16-bit Resolution

• * External Sense Resistor Sets the Full-Scale Current Range

• * Very Low Input Current Simplifies Routing

•

• Voltage Monitor with Wide VBUS Range* 0V to 9V FSR (Configurable to 4.5V)

• * 16-bit Resolution

•

• Real-Time Auto-Calibration of Offset Error for Voltage and Current

•

• 1% Power Measurement Accuracy over a Wide Dynamic Range* On-Chip Accumulation of 30-bit Power Results

• * Uster Programmable Sampling Rate 8, 64, 256, 1024

• * 5120 SPS for a Single Channel in Burst Mode

•

• 2.7V to 5.5V Supply Operation* 1.62-5.5V Capable I2C/SMBus and Digital I/O

• * SMBus 3.1 and I2C Fast Mode Plus, 1Mbps

• * High Speed Mode (3.4 Mbps)

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• ALERT on Over/UnderVoltage and Current or Overpower* Two Independent ALERT/GPIO pins

•

• Coulomb Counting: When Selected, the Accumu lator Accumulates VSENSE Values

Description

The PAC1942 is a dual 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. The device can detect over/undervoltage, over/undercurrent and overpower against user programmed limits for each channel and generate ALERT outputs. There are two versions of the PAC1942: the PAC1942-1 devices are for high-side current sensing and the PAC1942-2 devices are for low-side current sensing.