TPS3896PDRYT

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power - Precision Voltage Monitoring - Programmable Delay Time - Manual Reset Input - Watchdog Timer - Power-On Reset Generator - Supply Voltage Range: 1.2V to 5.5V - Operating Temperature Range: -40°C to +125°C

Package: SOIC-8

Essence: The TPS3896PDRYT is a voltage supervisor IC that provides accurate monitoring of the power supply voltage in electronic systems. It offers various features such as programmable delay time, manual reset input, watchdog timer, and power-on reset generator.

Packaging/Quantity: The TPS3896PDRYT is available in a standard SOIC-8 package. It is typically sold in reels containing 2500 units.

Specifications

The TPS3896PDRYT has the following specifications:

• Threshold Voltage Accuracy: ±1.5%
• Supply Current: 3.5µA (typical)
• Delay Time Options: 200ms, 400ms, 600ms, 1.2s, 2.4s, or 4.8s
• Manual Reset Input Threshold Voltage: 0.2V (typical)
• Watchdog Timeout Period: 1.6s (typical)
• Power-On Reset Timeout Period: 20ms (typical)

Pin Configuration

The TPS3896PDRYT has the following pin configuration:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| MR VDD |-- Pin 2: Power Supply Voltage (VDD) --| RESET VDD |-- Pin 3: Manual Reset Input (MR) --| GND VDD |-- Pin 4: Power Supply Voltage (VDD) --| VDD GND |-- Pin 5: Ground (GND) --| RESET VDD |-- Pin 6: Reset Output (RESET) --| GND VDD |-- Pin 7: Power Supply Voltage (VDD) --| VDD GND |-- Pin 8: Ground (GND) |___________| ```

Functional Features

The TPS3896PDRYT offers the following functional features:

1. Voltage Monitoring: Accurately monitors the power supply voltage and provides a reset signal when it falls below a specified threshold.
2. Programmable Delay Time: Allows users to select the desired delay time for the reset signal after the power supply voltage crosses the threshold.
3. Manual Reset Input: Provides an external manual reset input that can be used to force a reset regardless of the power supply voltage.
4. Watchdog Timer: Monitors the system's operation and generates a reset signal if it detects a fault or malfunction.
5. Power-On Reset Generator: Generates a reset signal during power-up to ensure proper initialization of the system.

Advantages and Disadvantages

Advantages: - Low power consumption - Precision voltage monitoring - Programmable delay time for flexibility - Manual reset input for manual control - Watchdog timer for system fault detection - Power-on reset generator for reliable startup

Disadvantages: - Limited number of delay time options - Requires additional external components for some functionalities

Working Principles

The TPS3896PDRYT operates by continuously monitoring the power supply voltage using an internal voltage reference. When the voltage falls below the programmed threshold, it triggers a reset signal. The delay time determines how long the reset signal remains active after the voltage crosses the threshold. The manual reset input allows for an immediate reset regardless of the voltage level. The watchdog timer monitors the system's operation and generates a reset signal if it detects a fault or malfunction. The power-on reset generator ensures that the system initializes properly during power-up.

Application Field Plans

The TPS3896PDRYT is commonly used in various applications, including:

1. Battery-Powered Devices: Provides voltage monitoring and reset functionality to ensure proper operation and prevent damage to battery-powered devices.
2. Embedded Systems: Monitors the power supply voltage in embedded systems to prevent data corruption and ensure reliable operation.
3. Industrial Control Systems: Offers voltage supervision capabilities in industrial control systems to maintain system integrity and prevent downtime.
4. Automotive Electronics: Ensures stable power supply voltage in automotive electronics, preventing malfunctions and ensuring safety.
5. Telecommunications Equipment: Monitors the power supply voltage in telecommunications equipment to prevent service disruptions and protect sensitive components.

Alternative Models

Some alternative models to the TPS3896PDRYT include:

1. TPS3808G01