STM6824LWY6F

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, low power consumption
• Package: Small Outline Transistor (SOT-23-6)
• Essence: Voltage Supervisor with Watchdog Timer
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Watchdog Timeout Period: Adjustable from 6.4ms to 51.2s
• Reset Threshold Voltage: 2.93V
• Power-On Reset Delay: 100ms typical
• Quiescent Current: 1.5µA typical

Detailed Pin Configuration

The STM6824LWY6F IC has a total of 6 pins arranged as follows:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (Active Low) --| WDI |-- Pin 3: Watchdog Input --| MR |-- Pin 4: Manual Reset Input --| VDD |-- Pin 5: Supply Voltage (VDD) |___________| ```

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Includes a watchdog timer that resets the system if a periodic input signal is not received within the timeout period.
• Provides a manual reset input for external system reset control.

Advantages and Disadvantages

Advantages: - High accuracy in monitoring the supply voltage. - Adjustable watchdog timeout period to suit different system requirements. - Low quiescent current, minimizing power consumption.

Disadvantages: - Limited number of pins for additional functionalities. - Requires an external capacitor for power-on reset delay.

Working Principles

The STM6824LWY6F is designed to ensure reliable operation of electronic systems by monitoring the supply voltage and providing a reset signal when necessary. It operates by comparing the supply voltage with a preset threshold voltage. If the supply voltage falls below the threshold, the reset output becomes active low, indicating a system reset.

Additionally, the IC includes a watchdog timer that requires a periodic input signal (WDI) to be received within a set timeout period. If the input signal is not detected within this period, the watchdog timer triggers a system reset.

The manual reset (MR) input allows for external control of the reset function, enabling a forced system reset when required.

Detailed Application Field Plans

The STM6824LWY6F is widely used in various applications where reliable power management is crucial. Some potential application fields include:

1. Embedded Systems: The IC ensures proper system initialization and prevents erratic behavior due to power fluctuations.
2. Industrial Automation: It provides a fail-safe mechanism by resetting the system in case of voltage drops or communication failures.
3. Automotive Electronics: The voltage supervisor helps maintain stable operation of critical automotive systems, such as engine control units and safety modules.
4. Consumer Electronics: It enhances the reliability of devices like smart home controllers, IoT devices, and portable electronics.

Detailed and Complete Alternative Models

1. MAX6816: Voltage Supervisor with Watchdog Timer, SOT-23 package
2. TPS3808: Precision Voltage Supervisor, SOT-23 package
3. ADM6315: Microprocessor Supervisory Circuit, SOT-23 package
4. LTC2937: Dual Supply Monitor and Sequencer, SOT-23 package

These alternative models offer similar functionalities and can be considered as alternatives to the STM6824LWY6F depending on specific requirements.

Word count: 450 words