MAX6459UTA/V+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy, small package size
• Package: TDFN-8 (Thin Dual Flat No-Lead)
• Essence: Monitors the voltage level of a power supply and generates 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
• Reset Threshold Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX6459UTA/V+T has the following pin configuration:

```

---

| | --| RESET | --| GND | --| MR | --| VCC | --| TH | --| CT | --| RESET_OUT | |___________| ```

• RESET: Output pin for the reset signal
• GND: Ground reference
• MR: Manual reset input
• VCC: Power supply input
• TH: Threshold selection pin
• CT: Capacitor connection pin for reset timeout adjustment
• RESET_OUT: Open-drain output for external monitoring

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below the selected threshold.
• Provides an adjustable reset timeout period to ensure proper system initialization.
• Offers a manual reset input for immediate system restart.
• Includes an open-drain output for external monitoring of the reset signal.

Advantages and Disadvantages

Advantages: - Low-power consumption, suitable for battery-powered applications. - High accuracy in voltage monitoring ensures reliable system operation. - Small package size saves board space. - Adjustable reset timeout period allows flexibility in system initialization.

Disadvantages: - Limited supply voltage range may not be suitable for all applications. - Manual reset input requires external control circuitry.

Working Principles

The MAX6459UTA/V+T operates by continuously monitoring the power supply voltage using an internal voltage reference. When the voltage falls below the selected threshold, the IC generates a reset signal on the RESET pin. The reset timeout period can be adjusted using an external capacitor connected to the CT pin. The manual reset input (MR) allows for immediate system restart when triggered. The open-drain RESET_OUT pin provides an option for external monitoring of the reset signal.

Application Field Plans

The MAX6459UTA/V+T is commonly used in various electronic systems where reliable power supply monitoring is critical. Some application fields include:

1. Battery-Powered Devices: Portable electronics, IoT devices, wearable devices.
2. Industrial Control Systems: PLCs (Programmable Logic Controllers), motor control systems, power management units.
3. Automotive Electronics: Engine control units, infotainment systems, safety systems.
4. Medical Equipment: Patient monitoring devices, diagnostic equipment, portable medical devices.
5. Home Automation: Smart thermostats, security systems, lighting control systems.

Alternative Models

1. MAX6460UTA/V+T: Similar voltage supervisor IC with additional features such as adjustable reset threshold and watchdog timer.
2. MAX6389UTA/V+T: Voltage supervisor IC with fixed reset threshold options and push-pull output configuration.
3. MAX6741UTA/V+T: Precision voltage monitor IC with adjustable reset threshold and integrated power-on reset delay.

These alternative models offer similar functionality to the MAX6459UTA/V+T but may have different specifications or additional features depending on specific application requirements.

Word count: 527 words