TPS3801T50DCKRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Supervisor with Programmable Delay Time - Precision Voltage Monitor - Manual Reset Input - Watchdog Timer - Power-On Reset Generator - Supply Voltage Range: 0.8V to 5.5V - Operating Temperature Range: -40°C to +85°C - Package Type: SC-70 (6-Pin) - RoHS Compliant

Package/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Supply Voltage Range: 0.8V to 5.5V
• Threshold Voltage Accuracy: ±1.5%
• Manual Reset Input Threshold Voltage: 0.2V
• Watchdog Timeout Period: 1.6s
• Power-On Reset Delay Time: 200ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.5µA (typical)
• Package Type: SC-70 (6-Pin)

Pin Configuration

The TPS3801T50DCKRG4 has the following pin configuration:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| WDI | |___________| ```

Functional Features

1. Low Power Supervisor: The TPS3801T50DCKRG4 is designed to monitor the supply voltage of a system and assert a reset signal when the voltage drops below a certain threshold.

2. Programmable Delay Time: The delay time for asserting the reset signal can be programmed using an external capacitor.

3. Precision Voltage Monitor: The device provides accurate monitoring of the supply voltage with a threshold voltage accuracy of ±1.5%.

4. Manual Reset Input: The MR pin allows for manual assertion of the reset signal, overriding the voltage monitoring function.

5. Watchdog Timer: The TPS3801T50DCKRG4 includes a watchdog timer that can be used to monitor the activity of a microcontroller or other system components. If the watchdog timer is not periodically reset, it will assert the reset signal.

6. Power-On Reset Generator: The device generates a reset signal upon power-up, ensuring proper initialization of the system.

Advantages and Disadvantages

Advantages: - Low power consumption - Programmable delay time - Accurate voltage monitoring - Manual reset capability - Watchdog timer for system monitoring - Power-on reset generation

Disadvantages: - Limited operating temperature range (-40°C to +85°C) - Only available in SC-70 package

Working Principles

The TPS3801T50DCKRG4 operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage drops below the programmed threshold, the device asserts a reset signal. The delay time for asserting the reset signal can be adjusted using an external capacitor connected to the CT pin. The MR pin allows for manual assertion of the reset signal, overriding the voltage monitoring function. The device also includes a watchdog timer that can be used to monitor the activity of a microcontroller or other system components. If the watchdog timer is not periodically reset, it will assert the reset signal. Upon power-up, the TPS3801T50DCKRG4 generates a reset signal to ensure proper initialization of the system.

Detailed Application Field Plans

The TPS3801T50DCKRG4 is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some of the typical application fields include:

1. Embedded Systems: The device is widely used in embedded systems to monitor the supply voltage and ensure proper system operation.

2. Battery-Powered Devices: The TPS3801T50DCKRG4 is suitable for battery-powered devices, such as portable electronics, where efficient power management and voltage monitoring are crucial.

3. Industrial Control Systems: The device finds applications in industrial control systems to provide reliable reset functionality and voltage monitoring for critical equipment.

4. Automotive Electronics: The TPS3801T50DCKRG4 can be utilized in automotive electronics to monitor the supply voltage and ensure safe operation of various components.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TPS3801T50DCKRG4 include:

1. TPS3808G01DBVR: Low Power Supervisor with Programmable Delay Time, SOT-23 (5-Pin) package.
2. MAX809RTRG: Voltage Supervisors with Manual Reset Input, SOT-23 (3-Pin) package.
3. **ADM