MAX813LESA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: 8-pin Small Outline Integrated Circuit (SOIC)
• Essence: Monitors voltage levels and provides a digital output based on the threshold set by the user.
• Packaging/Quantity: Available in tubes of 50 units.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Range: 0.4V to VCC - 0.4V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Detailed Pin Configuration

The MAX813LESA has the following pin configuration:

1. GND: Ground connection
2. TRIP: Threshold adjustment pin
3. RESET: Active-low reset output
4. VCC: Positive supply voltage
5. TH: Threshold input
6. MR: Manual reset input
7. CT: Capacitor connection for reset timeout
8. OUT: Digital output indicating voltage status

Functional Features

• Voltage Monitoring: The MAX813LESA monitors the voltage level at the TH pin and compares it with the threshold set by the user.
• Adjustable Threshold: The threshold voltage can be adjusted using an external resistor divider connected to the TRIP pin.
• Precision: The device provides accurate voltage monitoring with a low voltage threshold deviation.
• Low Power Consumption: With a quiescent current of only 3µA, the MAX813LESA is suitable for battery-powered applications.
• Reset Output: The active-low RESET pin provides a digital output indicating when the monitored voltage falls below the threshold.

Advantages and Disadvantages

Advantages

• Low-power consumption extends battery life in portable devices.
• Adjustable threshold allows flexibility in voltage monitoring applications.
• Precision voltage monitoring ensures reliable operation.
• Small package size enables space-saving designs.

Disadvantages

• Limited to monitoring voltages within the supply voltage range.
• Requires external components for threshold adjustment and reset timeout configuration.

Working Principles

The MAX813LESA operates by comparing the voltage at the TH pin with the threshold voltage set by the user. If the voltage at TH falls below the threshold, the RESET pin goes low, indicating a voltage violation. The threshold voltage can be adjusted using an external resistor divider connected to the TRIP pin. The CT pin is used to connect an external capacitor for configuring the reset timeout period.

Detailed Application Field Plans

The MAX813LESA finds applications in various fields, including:

1. Battery-Powered Devices: It can be used to monitor battery voltage and trigger actions when the voltage drops below a certain level.
2. Power Supply Monitoring: The IC can be employed to monitor power supply voltages and generate alerts or initiate shutdown procedures in case of voltage fluctuations.
3. Industrial Control Systems: The device can be utilized in industrial control systems to monitor critical voltage levels and ensure proper functioning of equipment.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MAX813LESA are:

1. MAX809: Low-power microprocessor reset circuits with adjustable threshold.
2. MAX803: Voltage monitors with fixed threshold options.
3. MAX811: Supervisory circuits with manual reset input and adjustable threshold.

These alternative models provide different features and options to suit specific application requirements.

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