MAX4372HESA

Product Overview

Category

MAX4372HESA belongs to the category of integrated circuits (ICs).

Use

The MAX4372HESA is commonly used as a current-sense amplifier in various electronic applications.

Characteristics

• The MAX4372HESA is a high-side current-sense amplifier with a voltage output.
• It operates over a wide supply voltage range, typically from 2.7V to 28V.
• This IC offers a low input offset voltage and low quiescent current, making it suitable for low-power applications.
• It provides a high common-mode rejection ratio (CMRR) and high bandwidth, ensuring accurate current measurements.
• The MAX4372HESA is available in a small surface-mount package, making it suitable for space-constrained designs.

Package and Quantity

The MAX4372HESA is available in a 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2.7V to 28V
• Input Offset Voltage: ±100µV (maximum)
• Quiescent Current: 60µA (typical)
• Common-Mode Rejection Ratio (CMRR): 100dB (typical)
• Bandwidth: 500kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MAX4372HESA has the following pin configuration:

```

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| | --| V+ OUT |-- Pin 1 --| IN+ GND |-- Pin 2 --| IN- NC |-- Pin 3 --| REF NC |-- Pin 4 --| SET NC |-- Pin 5 --| V- NC |-- Pin 6 --| NC NC |-- Pin 7 --| NC VCC- |-- Pin 8 |___________| ```

Functional Features

The MAX4372HESA offers the following functional features:

1. High-Side Current Sensing: The IC allows accurate measurement of current on the high side of a load, enabling precise monitoring and control.

2. Voltage Output: It provides a voltage output proportional to the sensed current, facilitating easy interfacing with other circuitry.

3. Wide Supply Voltage Range: The device operates over a wide range of supply voltages, making it suitable for various applications.

4. Low Power Consumption: With low quiescent current, the MAX4372HESA minimizes power consumption, ideal for battery-powered devices.

5. High Accuracy: The IC exhibits low input offset voltage and high CMRR, ensuring accurate current measurements even in noisy environments.

Advantages and Disadvantages

Advantages

• Accurate current sensing on the high side of a load.
• Wide supply voltage range allows flexibility in design.
• Low power consumption for energy-efficient applications.
• Small package size enables space-constrained designs.
• High accuracy ensures precise current measurements.

Disadvantages

• Limited number of pins may restrict additional functionalities.
• Not suitable for low-voltage applications below 2.7V.

Working Principles

The MAX4372HESA operates based on the principle of measuring the voltage drop across a sense resistor connected in series with the load. By amplifying this voltage drop, the IC provides an output voltage proportional to the load current. This amplified voltage can then be further processed or monitored as required.

Application Field Plans

The MAX4372HESA finds application in various fields, including but not limited to:

1. Power Management Systems: It is used in power supplies, battery chargers, and DC-DC converters to monitor and control current flow.

2. Motor Control: The IC enables precise current sensing in motor control circuits, ensuring efficient operation and protection against overloads.

3. Automotive Electronics: It is employed in automotive systems such as electric vehicles, hybrid vehicles, and engine management systems for current monitoring and protection.

4. Industrial Automation: The MAX4372HESA is utilized in industrial automation applications like robotics, process control, and instrumentation for accurate current measurements.

Alternative Models

Several alternative models with similar functionality to the MAX4372HESA are available in the market. Some notable alternatives include:

1. INA219: A high-side current-sense amplifier with an I2C interface.
2. LT6105: A precision high-side current-sense amplifier with a wide supply voltage range.
3. AD8210: A high-voltage, high-side current-sense amplifier with a differential output.

These alternatives offer comparable features and can be considered based on specific application requirements.

In conclusion, the MAX4372HESA is a versatile current-sense amplifier IC that provides accurate current measurements on the high side of a load. With