The PAC1954 is a four-channel power monitor designed for high-side and low-side current sensing with a full-scale voltage range of 0V to 32V. It features 16-bit resolution for both current and voltage measurements, allowing for precise monitoring of power consumption. The device supports programmable full-scale ranges for current sense voltage from -50 mV to +50 mV, and utilizes an external sense resistor to set the full-scale current range. The PAC1954 includes real-time auto-calibration to minimize offset errors and offers 1% power measurement accuracy across a wide dynamic range. It can accumulate power results on-chip for energy measurement, with user-selectable sampling rates of 8, 64, 256, and 1024 samples per second, as well as a burst mode sampling rate of 5120 SPS for a single channel. Communication is facilitated through an I2C/SMBus interface, supporting a supply voltage range of 2.7V to 5.5V. The device also features two independent ALERT pins for signaling over/undervoltage, overcurrent, and overpower conditions, enhancing its utility in embedded computing, networking, and industrial applications. The PAC1954 is available in compact package options, making it suitable for space-constrained designs.
The PAC1954 is a quad 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.
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Supervisory Circuits and Battery Monitor Chips |
| Product Number | PAC1954 |
| Product Name | 4 Ch, 16-bit, 32V Power Monitor, 2 alert, I2C |
| Type | ['WLCSP', 'VQFN'] |
