MAX816CSA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Monitors voltage levels and provides a digital output when the voltage exceeds a set threshold.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Range: 1.25V to 5V (adjustable)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 2µA (typical)
• Output Type: Active-Low Open-Drain
• Accuracy: ±1.5% (maximum)

Detailed Pin Configuration

The MAX816CSA has a total of 8 pins:

1. GND: Ground connection
2. VCC: Supply voltage input
3. TH: Threshold voltage adjustment pin
4. RESET: Active-low reset output
5. MR: Manual reset input
6. CT: Capacitor connection for reset timeout
7. OUT: Output pin
8. NC: No connection

Functional Features

• Monitors supply voltage and generates a reset signal when it falls below the set threshold.
• Adjustable threshold voltage allows customization for different applications.
• Low quiescent current ensures minimal power consumption.
• Open-drain output can be easily interfaced with other digital circuits.
• Manual reset input allows external control over the reset function.

Advantages

• Wide supply voltage range enables compatibility with various systems.
• Adjustable threshold voltage provides flexibility in voltage monitoring.
• Low quiescent current prolongs battery life in portable devices.
• Open-drain output simplifies circuit integration.
• Manual reset input allows for system-specific reset control.

Disadvantages

• Accuracy may be affected by external factors such as temperature and supply voltage fluctuations.
• Limited number of pins may restrict the functionality in complex systems.

Working Principles

The MAX816CSA operates by comparing the supply voltage with the threshold voltage set by the TH pin. When the supply voltage falls below the threshold, the RESET pin is pulled low, indicating a reset condition. The CT pin is used to connect an external capacitor that determines the reset timeout period. The MR pin provides a manual reset option, allowing the user to force a reset regardless of the supply voltage.

Detailed Application Field Plans

The MAX816CSA finds applications in various fields, including:

1. Battery-Powered Devices: Ensures proper operation by monitoring battery voltage and initiating a reset when it drops below a critical level.
2. Industrial Control Systems: Provides voltage monitoring and reset capabilities for reliable operation of control circuits.
3. Automotive Electronics: Protects sensitive components by monitoring voltage levels and triggering resets during abnormal conditions.
4. Home Automation: Enables safe and reliable operation of smart home devices by monitoring power supply voltages.

Detailed and Complete Alternative Models

1. MAX803/MAX809: Similar voltage monitor ICs with different package options.
2. LTC2937: Precision voltage monitor with additional features like adjustable hysteresis and watchdog timer.
3. ADM1060: Integrated power supply supervisor with multiple voltage monitors and programmable outputs.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

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