·           High-side or low-side current sensing

·           Operates from a 2.7 V to 5.5 V power supply

·           Reports current, voltage, power, and energy

·           Programmable Vshunt full scale range: 20.48 mV

/ 81.92 mV

·           Programmable Vbus full scale range:52.42 V

/ 78.64 V

·           Input common mode range: -0.3V to 70V

·           Current monitoring accuracy:

l  16-bit ADC resolution

l  0.25% gain error (maximum)

l  10 µV offset (maximum)

·           Power monitoring accuracy:

l  0.7% full scale (maximum)

·           Energy monitoring accuracy:

l  1.2% full scale (maximum)

·           Low input bias currents: 5 nA (maximum)

·           Low disable current: 50 nA (maximum)

·           Configurable averaging options

·           Alert limits for over and under current events

·           1.2V compliant I²C, SMBus interface

·           16-pin selectable addresses

·           CSP1.51×1.51-16

The SQ52212 is a 2-channel, 16-bit digital current monitor with an I²C/SMBus-compatible interface, supporting digital bus voltages from 1.2 V to 5.5 V. It measures the voltage across an external sense resistor and reports values for shunt voltage, bus voltage, current, power, and energy on each channel.

The SQ52212 offers programmable ADC conversion times and averaging, applied uniformly across all channels. Each channel has a programmable calibration value and an internal multiplier, enabling direct readout of current in amperes, power in watts, and energy in joules. It also monitors the bus voltage at the VBUS pin and can trigger alerts for overcurrent, undercurrent, overvoltage, undervoltage, and overpower conditions. With high input impedance in current measurement mode, the device supports the use of larger current sense resistors, which are necessary for measuring low system currents.

The SQ52212 operates with common-mode bus voltages ranging from 0V to 70V, independent of supply voltage. It runs on a single supply voltage of 2.7 V to 5.5 V, with a typical supply current of 335μA during normal operation. The device can be placed in a low-power standby mode, reducing the typical operating current to 6 μA, and can be fully disabled via the enable pin, resulting in a supply current of less than 50 nA. The device is specified for an operating temperature range of –40°C to 125°C and supports up to 16 programmable addresses.