The TPS3828-33DBVR is a voltage supervisor and reset IC from Texas Instruments (TI). This part is typically used for monitoring supply voltage levels and generating a reset signal when certain conditions are met (e.g., when voltage falls outside of a specified range).
Packaging Details
The TPS3828-33DBVR is available in the SOT-23-5 package. It has 5 pins in total, not 200 pins, so the requested detailed description of 200 pins is not applicable. Instead, I will provide a comprehensive explanation for each of the 5 pins in the SOT-23-5 package.
Pinout and Pin Functions
Pin Number Pin Name Pin Function Description 1 VDD Power Supply Pin: Connect to the positive power rail. This is the supply voltage pin for the device (typically 1.8V to 5.5V). 2 GND Ground Pin: Connect to the system ground to complete the circuit. 3 RESET Reset Output Pin: The output that signals the reset condition. It goes low when the voltage is below the threshold and high when the voltage is within a valid range. 4 SENSE Voltage Sense Input: This pin is used to monitor the supply voltage. It connects to the power rail that is being monitored for undervoltage detection. 5 NC (Not Connected) No Connection: This pin does not have a function in this specific package and can be left unconnected.Circuit Principles and Functionality
Power Supply (VDD) and Ground (GND): These pins provide the power for the operation of the device. The VDD pin connects to the supply voltage of the system, and GND connects to the common ground. Ensuring proper power delivery is essential for stable operation.
Voltage Sensing (SENSE Pin): The SENSE pin monitors the voltage level of the system. When the monitored voltage falls below the specified threshold, the reset pin will assert a low signal. Once the voltage returns to normal, the reset pin will return to a high state.
Reset Output (RESET Pin): This is the output that is driven low if the monitored voltage is out of range or unstable. The RESET pin helps ensure that systems are only powered up or running when the supply voltage is within acceptable limits.
FAQs about TPS3828-33DBVR
Q: What is the recommended supply voltage range for the TPS3828-33DBVR? A: The recommended supply voltage range for the TPS3828-33DBVR is from 1.8V to 5.5V.
Q: What is the purpose of the RESET pin in the TPS3828-33DBVR? A: The RESET pin is an output signal that goes low when the monitored voltage falls below the specified threshold, indicating that the system should be reset.
Q: How many pins are there in the SOT-23-5 package of the TPS3828-33DBVR? A: The TPS3828-33DBVR in the SOT-23-5 package has 5 pins in total.
Q: Can I leave the NC (Not Connected) pin unconnected in the TPS3828-33DBVR? A: Yes, the NC pin is not connected to any internal circuitry and can be left unconnected.
Q: What should I connect to the SENSE pin in the TPS3828-33DBVR? A: The SENSE pin should be connected to the power rail that you want to monitor for undervoltage detection.
Q: How do I reset the system using the TPS3828-33DBVR? A: The system is reset when the RESET pin goes low, which occurs when the monitored voltage is below the threshold. Once the voltage returns to normal, the RESET pin will go high.
Q: Is the TPS3828-33DBVR adjustable in terms of threshold voltage? A: No, the threshold voltage for this device is fixed at 3.3V.
Q: Can the TPS3828-33DBVR be used in 3.3V and 5V systems? A: Yes, the TPS3828-33DBVR can work in both 3.3V and 5V systems as long as the supply voltage is within the 1.8V to 5.5V range.
Q: What is the maximum current rating for the TPS3828-33DBVR? A: The maximum current rating for the TPS3828-33DBVR is typically low, and the device typically consumes microampere currents during operation.
Q: Can the TPS3828-33DBVR be used in battery-powered devices? A: Yes, the TPS3828-33DBVR is suitable for battery-powered applications due to its low quiescent current.
Q: What is the typical application of the TPS3828-33DBVR? A: It is typically used in power management systems for monitoring power rails and generating reset signals when the voltage is out of range.
Q: Does the TPS3828-33DBVR have overvoltage protection? A: No, the TPS3828-33DBVR is designed to monitor for undervoltage conditions and does not provide overvoltage protection.
Q: Is the RESET output active low or active high? A: The RESET output is active low, meaning it goes low when the voltage is out of the specified range.
Q: How does the TPS3828-33DBVR detect undervoltage conditions? A: The TPS3828-33DBVR detects undervoltage by comparing the voltage at the SENSE pin to the internal threshold voltage. If the SENSE voltage is below the threshold, the RESET pin goes low.
Q: What is the threshold voltage of the TPS3828-33DBVR? A: The threshold voltage for the TPS3828-33DBVR is fixed at 3.3V.
Q: Is there any internal filtering for the voltage detection on the SENSE pin? A: Yes, the device includes some internal filtering to prevent false triggering from voltage spikes or noise.
Q: Can I use the TPS3828-33DBVR for low-voltage applications (e.g., below 1.8V)? A: No, the TPS3828-33DBVR is not designed to operate below 1.8V.
Q: What happens to the RESET pin when the supply voltage is within the acceptable range? A: When the supply voltage is within the acceptable range, the RESET pin will be high, indicating normal operation.
Q: What is the output impedance of the RESET pin on the TPS3828-33DBVR? A: The output impedance of the RESET pin is typically low when the pin is low (active state) and high when the pin is high (inactive state).
Q: Can the TPS3828-33DBVR be used in automotive applications? A: Yes, the TPS3828-33DBVR can be used in automotive applications, as it operates across a wide voltage range, but ensure that the operating conditions meet the specifications for your application.
If you need further information or clarification on any aspect, feel free to ask!
