MAX636AESA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Monitors the voltage level and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Range: Adjustable from 1.25V to 5V
• Reset Timeout Period: Fixed at 140ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Pin Configuration

The MAX636AESA+T has the following pin configuration:

```

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| | --| VCC GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (RST) --| TH OUT |-- Pin 3: Voltage Threshold Input (TH) --| CT GND |-- Pin 4: Capacitor Connection (CT) --| GND VCC |-- Pin 5: Supply Voltage (VCC) --| GND GND |-- Pin 6: Ground (GND) --| GND GND |-- Pin 7: Ground (GND) --| GND GND |-- Pin 8: Ground (GND) |___________| ```

Functional Features

• Monitors the input voltage and generates a reset signal when the voltage drops below the set threshold.
• Adjustable threshold voltage allows customization for different applications.
• Low quiescent current ensures minimal power consumption.
• Fixed reset timeout period provides a stable and reliable reset signal.

Advantages

• Wide supply voltage range enables compatibility with various systems.
• Adjustable threshold voltage offers flexibility in voltage monitoring applications.
• Low-power operation prolongs battery life in portable devices.
• Small package size saves board space and simplifies integration.

Disadvantages

• Fixed reset timeout period may not be suitable for all applications requiring different timeout durations.
• Limited number of pins restricts the number of external components that can be connected directly.

Working Principles

The MAX636AESA+T is designed to monitor the input voltage level and generate a reset signal when the voltage falls below the set threshold. The threshold voltage can be adjusted using an external resistor divider network connected to the TH pin. When the input voltage drops below the threshold, the reset output (RST) becomes active, indicating a system reset condition. The reset remains active for a fixed timeout period of 140ms, ensuring a stable reset signal during power-up or voltage fluctuations.

Detailed Application Field Plans

The MAX636AESA+T finds applications in various fields where voltage monitoring and system reset functionality are required. Some potential application areas include:

1. Battery-Powered Devices: Provides low-power voltage monitoring and reset functionality for battery-operated devices such as portable medical equipment, handheld instruments, and wireless sensors.
2. Industrial Control Systems: Ensures reliable system reset in industrial control applications, preventing malfunctions due to voltage drops or power interruptions.
3. Automotive Electronics: Monitors the vehicle's electrical system voltage and generates a reset signal to ensure proper functioning of automotive electronics, including engine control units (ECUs), infotainment systems, and safety modules.
4. Home Automation: Enables voltage monitoring and reset capability in smart home devices, ensuring uninterrupted operation and preventing data loss during power fluctuations.

Detailed and Complete Alternative Models

1. MAX638AESA+T: Similar to the MAX636AESA+T, but with an adjustable reset timeout period.
2. MAX631AESA+T: Voltage monitor IC with fixed threshold voltage and adjustable reset timeout period.
3. MAX6501UKP065+T: Precision voltage monitor with a fixed threshold voltage of 0.65V and adjustable reset timeout period.

These alternative models offer similar functionality with slight variations in features, allowing users to choose the most suitable option for their specific requirements.

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