ISL28022 Datasheet, PDF (1/28 Pages) Intersil Corporation – Precision Digital Power Monitor

Precision Digital Power Monitor
ISL28022
The ISL28022 is a bi-directional high-side and low-side digital
current sense and voltage monitor with serial interface. The
device monitors current and voltage and provides the results
digitally along with calculated power. The ISL28022 provides
tight accuracy of less than 0.3% for both voltage and current
monitoring over the entire input range. The digital power
monitor has configurable fault thresholds and measurable
ADC gain ranges.
The ISL28022 handles common-mode input voltage ranging
from 0V to 60V. The wide range permits the device to handle
telecom, automotive and industrial applications with minimal
external circuitry. Both high and low-side ground sensing
applications are easily handled with the flexible architecture.
The ISL28022 consumes an average current of just 700µA
and is available in the space saving 10 Ld MSOP package. The
ISL28022 is also offered in a 16 Ld QFN package. The part
operates over the extended temperature range from -40°C to
+125°C.
Features
• Bus voltage sense range . . . . . . . . . . . . . . . . . . . . . . 0V to 60V
• 16-bit ∑∆ADC monitors current and voltage
• Voltage measuring error . . . . . . . . . . . . . . . . . . . . . . . . . <0.3%
• Current measuring error . . . . . . . . . . . . . . . . . . . . . . . . . <0.3%
• Handles negative system voltage
• Over/undervoltage and current fault monitoring
• I²C/SMBus interface
• Wide V_CC range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V
• ESD (HBM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8kV
• Supports high speed I²C . . . . . . . . . . . . . . . . . . . . . . . 3.4MHz
Applications
• Routers and servers
• DC/DC, AC/DC converters
• Battery management/charging
• Automotive power
• Power distribution
• Medical and test equipment
VIN = 0V TO 60V
Voltage
Regulator
VOUT
EN
VBUS
VINP
VINM
ADC
16-Bit
VCC
REG
MAP
ECLK/INT
FIGURE 1. TYPICAL APPLICATION
VCC
GND
SMBCLK/SCL
SMBDAT/SDA
A0
A1
April 26, 2013
1
FN8386.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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