The ISL28025 is a bidirectional high-side and low-side digital

current sense and voltage monitor with a serial interface. The

device monitors power supply current and voltage and

provides the digital results along with calculated power. The

ISL28025 provides tight accuracy of less than 0.1 for both

voltage and current monitoring.

The VCC power can either be externally supplied or internally

regulated, which allows the ISL28025 to handle a

common-mode input voltage range from 0V to 60V. The wide

range permits the device to handle telecom, automotive and

industrial applications with minimal external circuitry.

Fault indication includes Bus Voltage window and overcurrent

fast fault logic indication. The ISL28025 includes an integrated

temperature sensor for monitoring.

The ISL28025 serial interface is PMBus compatible and

operates down to 1.2V voltage. It draws an average current of

just 1.3mA and is available in the space saving 16 ball WLCSP

package. The parts operate across the full industrial

temperature range from -40°C to +125°C.

Features

• Bus voltage sense range . . . . . . . . . . . . . . . . . . . . . . 0V to 60V

• Voltage gain error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05

• Current gain error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05

• High or low (RTN) side sensing

• Bidirectional current sensing

• Auxiliary low voltage input channel

• ∆∑ADC, 16-bit native resolution

• Programmable averaging modes

• Internal 3.3V regulator

• Internal temperature sense

• Over/undervoltage and current fault monitoring with 500ns

detection delay

• I2C/SMBus/PMBus interface that handles 1.2V supply

• 55 I2C slave addresses

Applications

• Data processing servers

• DC power distribution

• Telecom equipment

• Portable communication equipment

• DC/DC, AC/DC converters

• Automotive power

• Many I2C ADC with alert applications