MAX16120KA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX16120KA+ is a voltage supervisor IC designed to monitor and control power supply voltages in various electronic systems. It ensures the stability and reliability of the power supply by providing accurate voltage monitoring and reset functions.

Characteristics: - Low quiescent current consumption - Wide operating voltage range - Adjustable threshold voltage levels - High accuracy voltage monitoring - Built-in power-on reset function - Small package size for space-constrained applications

Package: The MAX16120KA+ is available in a compact 8-pin SOT23 package, which offers excellent thermal performance and ease of integration into circuit designs.

Essence: The essence of the MAX16120KA+ lies in its ability to provide reliable voltage supervision and reset functionality, ensuring proper operation of electronic systems.

Packaging/Quantity: The MAX16120KA+ is typically sold in reels or tubes containing a specified quantity of ICs, depending on the manufacturer's packaging standards.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Threshold Voltage Accuracy: ±1.5%
• Reset Timeout Period: Adjustable (typically 140ms)
• Power-On Reset Delay: 20ms (typical)

Pin Configuration

The MAX16120KA+ features an 8-pin SOT23 package with the following pin configuration:

```

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| | --| VDD GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output --| MR |-- Pin 3: Manual Reset Input --| TH |-- Pin 4: Threshold Voltage Input --| VDD |-- Pin 5: Supply Voltage (VDD) --| GND |-- Pin 6: Ground (GND) --| RESET IN |-- Pin 7: Reset Input --| NC |-- Pin 8: No Connection |___________| ```

Functional Features

1. Voltage Monitoring: The MAX16120KA+ continuously monitors the supply voltage and compares it to the user-defined threshold voltage. It provides a reset signal when the voltage falls below the threshold, ensuring proper system operation.

2. Power-On Reset: Upon power-up, the MAX16120KA+ generates a reset signal that remains active for a specified delay period. This ensures that the system initializes correctly and prevents any undefined behavior during power-up.

3. Manual Reset Input: The IC includes a manual reset input pin (MR) that allows external control of the reset function. When this pin is pulled low, the reset output is activated, regardless of the monitored voltage level.

Advantages and Disadvantages

Advantages: - Low quiescent current consumption helps conserve power in battery-operated devices. - Wide operating voltage range makes it compatible with various power supply configurations. - Adjustable threshold voltage levels provide flexibility for different voltage monitoring requirements. - High accuracy voltage monitoring ensures reliable system operation. - Built-in power-on reset function simplifies system initialization.

Disadvantages: - Limited number of pins may restrict the integration of additional features or functionalities. - SOT23 package may not be suitable for applications requiring higher power dissipation.

Working Principles

The MAX16120KA+ operates by comparing the supply voltage with the threshold voltage set by the user. If the supply voltage drops below the threshold, the IC asserts the reset output, indicating a fault condition. The reset output remains active until the supply voltage rises above the threshold or a manual reset signal is received.

During power-up, the IC generates a power-on reset signal to ensure proper initialization of the system. This prevents any undefined behavior that may occur during the power-up sequence.

Application Field Plans

The MAX16120KA+ finds applications in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearables can benefit from the MAX16120KA+ to monitor battery voltage and prevent unexpected shutdowns.

2. Industrial Control Systems: The IC can be used in industrial control systems to monitor power supply voltages and trigger appropriate actions in case of voltage deviations.

3. Automotive Electronics: In automotive applications, the MAX16120KA+ ensures stable power supply voltages for critical components, enhancing the overall reliability of the vehicle's electrical system.

4. Home Automation: The IC can be integrated into home automation systems to monitor and control power supply voltages, ensuring uninterrupted operation of connected devices.

Alternative Models

For users seeking alternative options, the following models offer