The PAC1720 is a dual high-side bi-directional current sensing monitor with precision voltage measurement capabilities. Each sensor measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator. The PAC1720 also measures the SENSE+ pin voltage and calculates average power over the integration period. The PAC1720 can be programmed to assert the ALERT# pin when high and low limits are exceeded for Current Sense and Bus Voltage. Available in a RoHS compliant 3 X 3mm 10-pin DFN package.

The PAC1720 device is good for measuring dynamic power. The long integration time allows for extending system polling cycles without losing any power consumption information. In addition the alert ensures that transient events are captured between the polling cycles.

Features

  Dual high-side current sensor

  Current measurement is integrated over 2.5ms to 2.6sec with up to 11-bit resolution

  1% current measurement accuracy in positive range

  Measures VSOURCE voltage

  Calculates proportional power

  VSOURCE voltage range 0V to 40V

  Bi-directional current sensing

  Auto-zero input offset voltage

  Digital averaging

  Adjustable sampling time and resolution

  5µA typical Standby current

  Programmable sense voltage range

  ±10mV, ±20mV, ±40mV, and ±80mV

  Power supply range 3.0V to 5.5V

  Wide temperature operating range: -40°C to +85°C

  ALERT# output for voltage and current out of limit transients between sampling interval

  SMBus 2.0 communications interface

  Address selectable by resistor decode

  Sample time configurable from 2.5ms-320ms

  With averaging effective sampling times up to 2.6sec

  3x3 mm DFN-10 package

Applications

  Notebook and Desktop Computers

  Industrial

  Power Management Systems

  Embedded Applications