MAX160EWN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor with Watchdog Timer
• Characteristics: High accuracy, low power consumption, small package size
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: The MAX160EWN is a voltage monitor IC that provides accurate monitoring of the power supply voltage. It also includes a watchdog timer to ensure system reliability.
• Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Watchdog Timeout Period: Adjustable from 6ms to 1024ms
• Reset Threshold Accuracy: ±1.5% (typical)

Pin Configuration

The MAX160EWN has the following pin configuration:

```

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| | --| VCC GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (Active Low) --| WDI |-- Pin 3: Watchdog Input --| MR |-- Pin 4: Manual Reset Input --| GND VCC |-- Pin 5: Power Supply (VCC) --| RESET IN |-- Pin 6: Reset Input --| NC |-- Pin 7: No Connection --| NC |-- Pin 8: No Connection |___________| ```

Functional Features

• Accurate monitoring of power supply voltage
• Programmable reset threshold voltage
• Adjustable watchdog timeout period
• Manual reset input for system control
• Active-low reset output signal

Advantages and Disadvantages

Advantages

• High accuracy in voltage monitoring
• Low power consumption
• Small package size, suitable for space-constrained applications
• Adjustable watchdog timeout period for flexibility

Disadvantages

• Limited number of pins for additional functionalities
• Not suitable for high-voltage applications (above 5.5V)

Working Principles

The MAX160EWN continuously monitors the power supply voltage and compares it to a programmable threshold voltage. If the voltage falls below the threshold, the reset output is activated, indicating a power failure or an out-of-tolerance condition. The watchdog timer ensures system reliability by requiring a periodic input signal (WDI) to be toggled within a specified timeout period. Failure to toggle the input within the set time will trigger a reset.

Application Field Plans

The MAX160EWN is commonly used in various electronic systems where accurate voltage monitoring and system reliability are crucial. Some application fields include:

1. Battery-powered devices: Ensures proper shutdown or system reset when the battery voltage drops below a certain level.
2. Industrial control systems: Monitors power supply integrity and triggers a reset if voltage fluctuations occur.
3. Automotive electronics: Provides voltage monitoring and system reset capabilities for automotive applications.
4. Medical equipment: Ensures reliable operation by monitoring power supply voltage and triggering a reset if necessary.
5. Home automation: Used in smart home devices to monitor power supply and maintain system stability.

Alternative Models

• MAX1617: Voltage monitor with adjustable reset threshold and watchdog timer.
• MAX16050: Dual voltage monitor with adjustable thresholds and manual reset input.
• MAX16046: Voltage monitor with integrated power-fail comparator and watchdog timer.

These alternative models offer similar functionality to the MAX160EWN and can be considered as alternatives based on specific requirements.

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