MAX6455UT26S+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy, small form factor
• Package: SOT23-6
• Essence: Monitors voltage levels and provides reset signals
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage: 1.6V to 5.5V
• Reset Threshold Voltage: Adjustable from 0.4V to 4.63V in 100mV steps
• Reset Timeout Period: Adjustable from 1ms to 640ms in 20ms steps
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 2µA (typical)

Pin Configuration

The MAX6455UT26S+T has a total of 6 pins:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold adjust pin for setting the reset threshold voltage
6. TO: Timeout adjust pin for setting the reset timeout period

Functional Features

• Monitors the supply voltage and asserts the reset signal when it falls below the programmed threshold.
• Provides an adjustable reset threshold voltage to accommodate different system requirements.
• Offers an adjustable reset timeout period to allow flexibility in timing.
• Includes a manual reset input for immediate system reset.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Adjustable reset threshold and timeout provide customization options.
• Small form factor enables space-saving designs.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited to voltage monitoring and reset functionality.
• Requires external components for proper operation.
• Not suitable for high-voltage applications.

Working Principles

The MAX6455UT26S+T operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the programmed threshold, the IC asserts the active-low reset signal. The reset signal remains active until the voltage rises above the threshold or a timeout period elapses. The threshold voltage and timeout period can be adjusted using external resistors connected to the TH and TO pins, respectively.

Detailed Application Field Plans

The MAX6455UT26S+T finds application in various fields, including:

1. Battery-Powered Devices: Ensures proper system operation by monitoring battery voltage and initiating a reset when it drops below a certain level.
2. Microcontroller Systems: Provides reliable reset signals to microcontrollers during power-up or voltage fluctuations, preventing erratic behavior.
3. Industrial Control Systems: Monitors critical voltages in industrial control systems, triggering resets to maintain system integrity.
4. Automotive Electronics: Protects automotive electronics from voltage dips or spikes, ensuring stable operation and preventing damage.

Detailed and Complete Alternative Models

1. MAX6456UT26S+T: Similar to MAX6455UT26S+T but with additional features like watchdog timer and adjustable hysteresis.
2. MAX6457UT26S+T: Voltage supervisor with fixed reset threshold and timeout, suitable for applications where customization is not required.
3. MAX6458UT26S+T: High-accuracy voltage supervisor with ultra-low quiescent current, ideal for power-sensitive applications.

(Note: This list is not exhaustive and other alternative models may exist.)

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