MAX6451UT46L+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy voltage monitoring
• Package: SOT-23-6
• Essence: Monitors the voltage level of a power supply and provides a reset signal when it falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Options: 2.93V, 3.08V, 3.30V, 4.63V
• Reset Timeout Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1µA (typical)

Detailed Pin Configuration

The MAX6451UT46L+T has a total of six pins:

1. VCC: Power supply input
2. GND: Ground reference
3. RESET: Active-low reset output
4. MR: Manual reset input
5. TH: Threshold selection pin
6. TO: Reset timeout selection pin

Functional Features

• Monitors the voltage level of the power supply continuously.
• Provides a reset signal when the voltage falls below the selected threshold.
• Offers manual reset capability through the MR pin.
• Allows selection of different reset thresholds and timeouts using the TH and TO pins.

Advantages and Disadvantages

Advantages

• Low-power consumption, suitable for battery-powered applications.
• High accuracy in voltage monitoring ensures reliable operation.
• Small package size allows for space-efficient designs.
• Wide operating temperature range enables usage in various environments.

Disadvantages

• Limited reset threshold and timeout options.
• Requires external components for proper operation.
• Not suitable for high-voltage applications.

Working Principles

The MAX6451UT46L+T operates by comparing the supply voltage with the selected threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a power failure or low voltage condition. The reset signal remains active until the supply voltage rises above the threshold or a manual reset is triggered through the MR pin.

Detailed Application Field Plans

The MAX6451UT46L+T is commonly used in various applications where reliable voltage monitoring is crucial. Some of the typical application fields include:

1. Battery-powered devices: Ensures proper shutdown or system reset when the battery voltage drops below a safe level.
2. Industrial control systems: Monitors power supply integrity to prevent data loss or equipment malfunction during voltage fluctuations.
3. Automotive electronics: Provides voltage supervision for critical automotive systems, such as engine control units and safety modules.
4. Home automation: Protects sensitive electronic devices from damage due to power supply issues.

Detailed and Complete Alternative Models

1. MAX6452UT46L+T: Similar to MAX6451UT46L+T but with additional features like adjustable reset thresholds and watchdog timer functionality.
2. MAX6453UT46L+T: Voltage supervisor IC with integrated power-on reset and manual reset input.
3. MAX6454UT46L+T: Dual voltage supervisor IC with independent threshold selection for each channel.

These alternative models offer different features and capabilities, allowing designers to choose the most suitable option for their specific requirements.

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