ACS37800: Highly Isolated, Programmable AC and DC Power Monitoring IC

Description

When you need to add AC power monitoring or DC power monitoring to your device, our ACS37800 power monitoring IC simplifies your task tremendously. Our integrated current sensor technology at the core of this device leverages the Hall effect and galvanic isolation to deliver reinforced isolation without extra board space. When powered from the same supply as the microcontroller unit, multiple power supplies and digital isolation ICs are not needed, which reduces the size of your printed circuit board (PCB).

The sensing scheme—isolated current is measured by two Hall plates that deferentially sense the magnetic field of the integrated conductor—eliminates the need for external sense resistors, current transformers, and Rogowski coils. This sensing scheme further reduces the size of your PCB and delivers a highly integrated power monitoring IC that eliminates errors caused by stray magnetic fields.

Multiple parameters are user programmable—including averaging and zero-crossing time or channel, and fault level—and all sensor features and key power measurements can be read out through an inter-integrated circuit (I2C) interface or a serial port interface (SPI). Two dedicated pins for voltage or current zero crossing (suitable for light-dimming applications) and fast overcurrent fault (for short-circuit detection) can also be configured to flag a Vrms under/overvoltage event. The graphical user interface (available for download in our Software Portal) facilitates device configuration.

The ACS37800 is provided in a small, low-profile, surface-mount SOIC16 wide-body, lead-free (pb-free) package. 

The ACS37800 is fully calibrated prior to shipment from the factory. Further calibration in application can improve accuracy.

Top Features

  • User-programmable VRMS under/overvoltage pin
  • Dedicated voltage or current zero-crossing pin
  • User-programmable overcurrent fault (OCF) 
  • I2C or SPI communication
  • Programmable averaging on two out of the three outputs: voltage, current or power

Typical Applications

  • Power-Consumption Tracking in Internet-of-Things (IoT) Devices (Smart Receptacle)
  • Smart Lighting
  • Server and Telecom Power
  • Portable Solar/Energy Systems Used in Disaster Recovery
  • Asymmetric AC Waveform Applications

ACS37800 Power Monitoring IC

Learn more about how the ACS37800 power monitoring IC simplifies the addition of AC power monitoring and DC power monitoring in device design. Watch now.

ACS37800 Power Monitoring IC

Learn more about how the ACS37800 power monitoring IC simplifies the addition of AC power monitoring and DC power monitoring in device design. Watch now.

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
ACS37800KMACTR-015B5-SPI 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS37800KMACTR-030B3-I2C 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS37800KMACTR-030B3-SPI 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS37800KMACTR-090B3-I2C 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Allegro-16-Pin-SOICW-MA-Package

Packaging

The ACS37800 is provided in a small, low-profile, surface-mount SOIC16, (suffix MA), wide-body, lead-free (pb-free) package. 

MA Package Documentation

ASEK37800 demo board

Evaluation Board

ACS37800-015B5-SPI - Current Sensor Sensor Evaluation Board

Interface: Serial, SPI

Supply Voltage: 4.5V ~ 5.5V

ASEK37800 Gerber Files (ZIP)