FEATURES AND BENEFITS

• Low internal primary conductor resistance (265 μΩ) for

better power efficiency and low dissipation

• High operating bandwidth for fast control loops or where

high-speed currents are monitored

□ 400 kHz bandwidth

□ 1.1 μs typical response time

• High accuracy

□ As low as 1% maximum sensitivity error over

temperature

□ 8 mV maximum offset voltage over temperature

□ Non-ratiometric operation with VREF output

□ Differential sensing robust against external magnetic

fields

□ No magnetic hysteresis

• UL-certified to 62368-1, highly isolated compact

SOIC16W surface mount package

□ 5 kVRMS rated isolation test voltage

□ 1144 VRMS / 1618 VDC basic isolation voltages

□ 572 VRMS / 809 VDC reinforced isolation voltages

• Wide operating temperature, –40°C to 125°C

• Maximum 70 ARMS continuous operating current at 85°C

DESCRIPTION

The ACS37003 is a fully integrated current sensor IC that

senses current flowing through the custom SOICW16

package. The current conductor has a very low (265 μΩ)

resistance, ideal for low power dissipation. The sensor is

factory-trimmed to provide high accuracy over the entire

operating range without the need for customer programming

or calibration.

The internal construction provides high isolation by magnetically coupling the field generated by current flow in the

conductor to the fully monolithic Hall sensor IC. The current is sensed differentially by two Hall plates that subtract

out interfering common-mode magnetic fields. The IC has

no physical connection to the integrated current conductor and provides 5 kVRMS isolation between the primary

and secondary signal leads of the package. This high rating

provides an industry-leading basic working voltage of 1140

VRMS and a reinforced working voltage of 572 VRMS.

The ACS37003KMC is provided in a custom SOICW16 surface mount package. The pin pitch is the same as a standard

SOIC16, but the lead-frame is 2.5 times as thick to reduce

the resistance. The package body is sized to achieve greater

than 8.2 mm of creepage and clearance. The leadframe is

plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes.

Internally, the device is Pb-free, making the device RoHS

compliant.