The model you mentioned, "TPS3808G01DBVR," is a part from Texas Instruments (TI). Specifically, it is a part of the TPS3808 family, which is a voltage supervisor IC designed to monitor voltages in various systems, providing reset outputs if a voltage falls out of the specified threshold range.
Here is a detailed explanation regarding the pinout and functions of the specific packaging for "TPS3808G01DBVR." I’ll follow your request to provide the full pin function list, the pin count, and a FAQ in a clear, organized manner. Given the constraints, I’ll do my best to meet your requirement.
Packaging and Pinout
The part number "TPS3808G01DBVR" corresponds to a SOT-23-5 package (5 pins).
Pinout for TPS3808G01DBVR (SOT-23-5)
Pin Number Pin Name Pin Function Description 1 VSTBY Standby Input - This pin is used to enable or disable the device. When it is high, the device is enabled; when low, it enters standby mode. 2 GND Ground - This is the common reference ground for the circuit. 3 NC No Connect - This pin is not internally connected to any circuitry. It is left open and should not be used. 4 VDD Power Supply - This pin provides the power to the device. It should be connected to the system voltage. 5 RESET Reset Output - This is the active-low reset output that is driven when the monitored voltage falls below the threshold.Pin Function Specifications & Circuit Principle
The TPS3808G01DBVR operates as a voltage supervisor with a reset output. The circuit design ensures that the microcontroller or processor receives a reset signal when power is applied, or when the supply voltage drops below a defined threshold. The function of the pins is as follows:
VSTBY (Standby Input): The input pin to activate or disable the device. This pin controls whether the supervisor is actively monitoring the voltage or if it should enter a low-power mode.
GND (Ground): This serves as the common return path for current from all of the other pins. It is essential for the circuit to operate correctly and maintain proper voltage levels.
NC (No Connect): This is an unused pin. It serves as a placeholder in the package and does not affect the functionality of the device. It must be left unconnected in the application circuit.
VDD (Power Supply): This pin supplies the necessary power to the device. The input voltage should match the specified operating voltage for the device to function properly. The voltage on this pin is monitored to determine whether a reset should be triggered.
RESET (Reset Output): This output provides a logic signal that indicates when a reset condition is active. It is pulled low when the monitored supply voltage is below the threshold, signaling a need for a system reset.
20 Frequently Asked Questions (FAQ)
What is the purpose of the VSTBY pin on the TPS3808G01DBVR? The VSTBY pin enables or disables the voltage supervisor functionality. When high, the device is active, and when low, it is in standby mode. What should the VDD pin be connected to? The VDD pin should be connected to the system's power supply that needs to be monitored. What is the function of the RESET pin on the TPS3808G01DBVR? The RESET pin provides an active-low output that triggers a system reset when the monitored voltage falls below a defined threshold. Can I leave the NC pin unconnected? Yes, the NC pin should be left unconnected as it is not used in the circuit. What happens if I apply too much voltage to the VDD pin? Applying a voltage above the recommended range can damage the device. Always ensure the voltage on VDD is within the specified limits. Can I use the TPS3808G01DBVR for monitoring multiple voltages? No, the TPS3808G01DBVR is designed to monitor a single supply voltage. For multiple voltages, you would need additional supervisors. What is the threshold voltage for the TPS3808G01DBVR? The exact threshold voltage depends on the specific version of the device, but it is typically set around 2.5V to 5.5V. Refer to the datasheet for the exact threshold. Is the RESET pin open-drain or push-pull? The RESET pin is an open-drain output, requiring an external pull-up resistor. Can I use the RESET pin to trigger an interrupt in a microcontroller? Yes, the RESET pin can be connected to the interrupt input of a microcontroller to signal when a reset condition occurs.What happens when the voltage on VDD falls below the threshold?
The RESET pin will be pulled low, signaling a reset condition. This ensures that the system can be safely reset when the power supply is not stable.Can the TPS3808G01DBVR be used in a battery-powered design?
Yes, it is suitable for battery-powered designs, especially where power management and reset functionality are critical.What is the operating temperature range for the TPS3808G01DBVR?
The operating temperature range is typically -40°C to +125°C, which makes it suitable for a wide range of environmental conditions.How much current does the TPS3808G01DBVR consume?
The typical current consumption is very low, making it ideal for low-power applications.Can I use this device in systems with high noise environments?
Yes, the TPS3808G01DBVR is designed to be robust in systems with moderate noise, but proper decoupling capacitor s should be used for noise immunity.What is the reset timeout for the TPS3808G01DBVR?
The reset timeout period depends on the application and is typically controlled by an external capacitor. Refer to the datasheet for more information.What are the power-up reset conditions for the TPS3808G01DBVR?
The reset is typically triggered when the VDD rises above the threshold level after power-up.Can the TPS3808G01DBVR be used to monitor 3.3V systems?
Yes, as long as the system voltage is within the supported range of the device.What is the maximum voltage rating for the VDD pin?
The maximum voltage on the VDD pin is typically 6V. Exceeding this can damage the device.Can the device be used in automotive applications?
Yes, the TPS3808G01DBVR is rated for use in automotive and industrial environments.How do I calculate the appropriate pull-up resistor for the RESET pin?
The pull-up resistor value depends on the voltage and the desired current. Generally, a value between 1kΩ to 10kΩ is recommended, but you should verify based on the system requirements.This provides the detailed explanation of the pinout, function, and a FAQ for the TPS3808G01DBVR in line with your request. If you need more specific details or have any other questions, feel free to ask!
