TPS3828-50QDBVRG4Q

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Reset Threshold - Manual Reset Input - Active-Low Push-Pull Reset Output - Power-On Reset Delay Time: 200 ms (typ) - Watchdog Timer Time-Out Period: 1.6 s (typ) - Small Package Size

Package: SOT-23 (5)

Essence: The TPS3828-50QDBVRG4Q is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other devices when the voltage drops below a certain threshold.

Packaging/Quantity: The TPS3828-50QDBVRG4Q is available in a reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6 V to 6.0 V
• Reset Threshold Voltage: Adjustable from 1.2 V to 5.0 V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10 µA (typ)
• Watchdog Timer Timeout Period: 1.6 s (typ)
• Power-On Reset Delay Time: 200 ms (typ)
• Manual Reset Input Threshold Voltage: 0.3 V (max)
• Active-Low Push-Pull Reset Output Voltage: 0.4 V (max)
• Package Type: SOT-23 (5)

Pin Configuration

The TPS3828-50QDBVRG4Q has the following pin configuration:

____ VDD| | GND| | RESET| | MR | | VDD|____|

Functional Features

1. Voltage Monitoring: The TPS3828-50QDBVRG4Q continuously monitors the supply voltage and asserts a reset signal when it falls below the set threshold.
2. Adjustable Reset Threshold: The reset threshold voltage can be adjusted using external resistors, allowing flexibility in setting the desired voltage level for triggering the reset.
3. Manual Reset Input: The MR pin allows for manual resetting of the device by pulling it low.
4. Push-Pull Reset Output: The active-low push-pull reset output provides a reliable reset signal to the microcontroller or other devices.
5. Power-On Reset Delay: The IC includes a power-on reset delay circuit that ensures a stable power supply before releasing the reset signal.
6. Watchdog Timer: The built-in watchdog timer monitors the system's operation and generates a reset signal if it detects a fault or system lock-up.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide supply voltage range - Adjustable reset threshold - Small package size - Manual reset capability - Reliable push-pull reset output

Disadvantages: - Limited number of pins for additional functionalities - Not suitable for high-voltage applications

Working Principles

The TPS3828-50QDBVRG4Q operates by comparing the supply voltage with the set threshold voltage. When the supply voltage drops below the threshold, the IC asserts a reset signal to the connected devices, indicating a power failure or unstable voltage condition. The power-on reset delay ensures that the reset signal is not released immediately after power-up, allowing time for the power supply to stabilize. The watchdog timer continuously monitors the system's operation and generates a reset signal if it detects a fault or system lock-up.

Application Field Plans

The TPS3828-50QDBVRG4Q is commonly used in various applications where reliable voltage monitoring and reset functionality are required. Some of the potential application fields include:

1. Microcontrollers: The IC ensures proper system initialization and prevents erratic behavior during power fluctuations or voltage drops.
2. Embedded Systems: It provides a fail-safe mechanism to reset the system in case of software or hardware failures.
3. Battery-Powered Devices: The low quiescent current and wide supply voltage range make it suitable for battery-operated devices, extending battery life.
4. Industrial Control Systems: The voltage supervisor helps maintain stable operation in industrial control systems, preventing damage or data corruption due to power issues.

Alternative Models

1. TPS3820-50QDBVRQ1
2. TPS3823-50QDBVRQ1
3. TPS3824-50QDBVRQ1
4. TPS3825-50QDBVRQ1
5. TPS3826-50QDBVRQ1

These alternative models offer similar voltage monitoring and reset functionalities with slight variations in specifications