MAX6446UK16L+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitoring and Resetting
• Characteristics: Low-power, high-accuracy voltage monitoring, small package size
• Package: SOT23-5
• Essence: Monitors the voltage level of a power supply and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V
• Reset Timeout Options: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6446UK16L+T IC has a total of 5 pins:

1. VCC: Power Supply Input
2. GND: Ground
3. RESET#: Active-Low Reset Output
4. MR#: Manual Reset Input
5. TH#: Threshold Voltage Selection Input

Functional Features

• Monitors the voltage level of the power supply continuously.
• Generates a reset signal when the voltage falls below the set threshold.
• Provides a manual reset option through the MR# pin.
• Offers multiple threshold voltage and reset timeout options for flexibility.

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-constrained designs.
• Wide operating temperature range enables usage in various environments.

Disadvantages

• Limited threshold voltage and reset timeout options may not meet all application requirements.
• SOT23-5 package may be challenging for hand soldering.

Working Principles

The MAX6446UK16L+T operates by continuously monitoring the voltage level of the power supply connected to the VCC pin. It compares the voltage against the selected threshold voltage provided through the TH# pin. When the voltage falls below the threshold, the RESET# pin is asserted low, indicating a reset condition. The reset remains active until the voltage rises above the threshold or a manual reset signal is received through the MR# pin.

Detailed Application Field Plans

The MAX6446UK16L+T is commonly used in various applications where voltage monitoring and resetting are critical. Some typical application fields include:

1. Battery-Powered Devices: Portable electronics, IoT devices, wearable devices.
2. Embedded Systems: Microcontrollers, digital signal processors, FPGA/CPLD-based systems.
3. Industrial Control Systems: PLCs, motor control units, power supplies.
4. Automotive Electronics: Engine control units, infotainment systems, advanced driver-assistance systems (ADAS).

Detailed and Complete Alternative Models

1. MAX6447UK16L+T: Similar to MAX6446UK16L+T but with different threshold voltage options.
2. MAX6448UK16L+T: Voltage monitoring and resetting IC with additional features like watchdog timer and power-fail detection.
3. MAX6381XR26D3-T: Voltage monitoring and resetting IC with higher accuracy and wider operating temperature range.

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