MAX6834GXRD2+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Supervisor
• Characteristics: High accuracy, low power consumption, small package size
• Package: 8-pin TDFN (Thin Dual Flat No-Lead) package
• Essence: Monitors and supervises the voltage levels in a power supply system
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Reset Threshold Voltage Options: 1.575V, 2.32V, 2.63V, 3.08V, 4.63V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Watchdog Timer Timeout Period Options: 1.12s, 2.25s, 4.5s, 9s

Detailed Pin Configuration

The MAX6834GXRD2+T has the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. WDI: Watchdog timer input
6. CT: Capacitor terminal for reset timeout period adjustment
7. TH: Threshold voltage selection pin
8. NC: No connection

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides a watchdog timer function to detect system malfunctions and initiate a system reset if necessary.
• Offers a manual reset input for external reset control.
• Adjustable reset threshold voltage and timeout period to suit different system requirements.
• Low quiescent current consumption ensures minimal power usage.

Advantages and Disadvantages

Advantages: - High accuracy in monitoring power supply voltage levels. - Low power consumption, making it suitable for battery-powered applications. - Small package size allows for space-efficient designs. - Flexible configuration options with adjustable threshold voltage and timeout period.

Disadvantages: - Limited number of available reset threshold voltage and timeout period options. - Not suitable for high-voltage applications due to the specified supply voltage range.

Working Principles

The MAX6834GXRD2+T operates by continuously monitoring the power supply voltage. When the voltage falls below the programmed threshold, the IC generates an active-low reset signal. This signal can be used to reset the microcontroller or other components in the system.

Additionally, the IC includes a watchdog timer function that requires periodic input pulses from the WDI pin. If these pulses are not received within the configured timeout period, the IC initiates a system reset.

Detailed Application Field Plans

The MAX6834GXRD2+T is commonly used in various electronic systems where reliable power supply monitoring and supervision are critical. Some application fields include:

1. Battery-powered devices: Portable electronics, medical devices, and IoT sensors.
2. Industrial control systems: PLCs (Programmable Logic Controllers), motor control units, and automation equipment.
3. Automotive electronics: Vehicle control modules, infotainment systems, and safety systems.
4. Communication systems: Routers, switches, and network equipment.
5. Consumer electronics: Smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

1. MAX6833: Similar power supply supervisor IC with a different pin configuration.
2. MAX6816: Power supply supervisor IC with additional features like power-on reset delay and adjustable watchdog timeout.
3. MAX6381: Voltage monitor IC with a wide range of threshold voltage options and adjustable reset timeout period.

These alternative models offer similar functionality to the MAX6834GXRD2+T and can be considered based on specific application requirements.

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