MAX823ZEXK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Detector
• Characteristics: Low-power, precision voltage monitoring
• Package: SOT23-5
• Essence: Monitors the voltage level and provides a reset signal when it falls below a specified threshold
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 3.6V
• Quiescent Current: 1µA (typical)
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX823ZEXK+T has a total of five pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (RESET OUT) --| MR |-- Pin 3: Manual Reset Input (MR) --| TH |-- Pin 4: Threshold Voltage Selection (TH) --| VCC |-- Pin 5: Power Supply (VCC) |___________| ```

Functional Features

• Voltage Monitoring: The MAX823ZEXK+T continuously monitors the input voltage level.
• Precision Threshold: It compares the input voltage with a precise threshold voltage.
• Reset Signal: When the input voltage falls below the threshold, the device generates a reset signal on the RESET OUT pin.
• Manual Reset: The MR pin allows for manual reset control.
• Low Power Consumption: The IC operates at a low quiescent current of 1µA, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring - Low power consumption - Small package size - Manual reset capability

Disadvantages: - Limited threshold voltage options - Single-channel voltage monitoring

Working Principles

The MAX823ZEXK+T operates by comparing the input voltage with a precise threshold voltage set by the TH pin. When the input voltage falls below the threshold, the device generates a reset signal on the RESET OUT pin. The MR pin allows for manual reset control, providing flexibility in system design. The low quiescent current ensures minimal power consumption, making it ideal for battery-powered applications.

Detailed Application Field Plans

The MAX823ZEXK+T finds applications in various fields, including:

1. Battery-Powered Devices: It can be used to monitor battery voltage and initiate a reset when the voltage drops below a certain level.
2. Microcontroller Systems: The IC ensures reliable operation by resetting the microcontroller when the supply voltage is insufficient.
3. Industrial Control Systems: It provides voltage monitoring and reset functionality in industrial control systems to maintain system integrity.
4. Automotive Electronics: The MAX823ZEXK+T can be employed in automotive electronics to monitor critical voltages and trigger appropriate actions.

Detailed and Complete Alternative Models

1. MAX809: Similar voltage detector IC with adjustable threshold voltage options.
2. MAX811: Voltage detector IC with additional features like watchdog timer and manual reset input.
3. MAX638: Precision voltage monitor with multiple threshold voltage options and adjustable reset timeout period.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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