The TPS3828-33DBVR is a part of the Texas Instruments (TI) brand. It is a voltage supervisor integrated circuit (IC) designed to monitor power supplies and ensure proper voltage levels for digital circuits. The part number TPS3828-33DBVR specifically refers to a voltage supervisor IC with a 3.3V threshold for monitoring, and it comes in a DBV package.
Below, I'll break down the pin function specifications, pinout details, and provide an extensive FAQ in a Q&A format as you requested.
Pinout Specifications:
Package Type:
DBV (SOT-23-5) Package Pin Count: 5 pinsHere’s a detailed breakdown of the pin functions:
Pin No. Pin Name Pin Function Description 1 VDD Supply voltage pin. Provides power to the IC. The input voltage range typically ranges from 1.8V to 6V. 2 GND Ground pin. Connects to the system ground. 3 RESET Active low reset output. When the monitored voltage (VDD) falls below the threshold, this pin is pulled low to initiate a system reset. The reset signal is active until VDD is stable. 4 SVIN Supervision voltage input. Monitors the supply voltage. It is used to set the threshold voltage for triggering the reset. For the TPS3828-33DBVR, the threshold is 3.3V. 5 N.C. No connection pin. This pin is unused and should be left floating or unconnected.Functional Overview of the Pins:
VDD Pin: Function: Provides the supply voltage for the chip. Voltage Range: Typically 1.8V to 6V (can vary depending on the specific part). Usage: This pin should be connected to the system’s power supply. GND Pin: Function: Ground connection. Usage: Connect to the ground (negative terminal) of the power supply or the circuit. RESET Pin: Function: Reset signal output when the monitored voltage falls below the threshold. Behavior: Active low. This pin will be driven low if the supply voltage (VDD) drops below the set threshold, indicating the system needs to be reset. Usage: It can be connected to the reset input of the processor or other parts of the circuit that require a reset signal. SVIN Pin: Function: Supervision voltage input pin. Usage: This pin is used to set the threshold voltage at which the reset signal will be triggered. For this part (TPS3828-33DBVR), it is designed to monitor 3.3V. N.C. Pin: Function: No connection. Usage: It is typically left floating and is not used in the circuit.FAQ for TPS3828-33DBVR:
Q: What is the purpose of the TPS3828-33DBVR? A: The TPS3828-33DBVR is a voltage supervisor IC used to monitor the supply voltage and issue a reset signal when the voltage drops below a defined threshold of 3.3V.
Q: What is the operating voltage range for the TPS3828-33DBVR? A: The TPS3828-33DBVR operates with a supply voltage range from 1.8V to 6V.
Q: How many pins are available in the TPS3828-33DBVR package? A: The TPS3828-33DBVR is housed in a 5-pin SOT-23 package.
Q: What type of reset output is available on the TPS3828-33DBVR? A: The reset output on the TPS3828-33DBVR is active low. It will drive low when the monitored voltage drops below the threshold.
Q: What is the threshold voltage of the TPS3828-33DBVR? A: The TPS3828-33DBVR has a threshold voltage of 3.3V.
Q: Can the TPS3828-33DBVR be used for monitoring voltages higher than 3.3V? A: No, the TPS3828-33DBVR is specifically designed to monitor voltages around 3.3V. For other thresholds, different parts from the TPS38xx family would be needed.
Q: What happens when the VDD voltage falls below the 3.3V threshold? A: When the VDD voltage falls below the 3.3V threshold, the RESET pin is driven low to trigger a system reset.
Q: What is the typical application for the TPS3828-33DBVR? A: It is commonly used in microcontroller-based circuits or systems where a reset is required when the supply voltage falls below a safe level.
Q: How is the reset signal held low on the RESET pin? A: The RESET pin remains low until VDD has been stable and exceeds the threshold voltage of 3.3V.
Q: What is the role of the SVIN pin on the TPS3828-33DBVR? A: The SVIN pin is used to provide the supervision voltage that determines the reset threshold. It is internally set to monitor a 3.3V threshold.
Q: Can I connect the N.C. pin to any signal in my circuit? A: No, the N.C. pin (No connection) should remain unconnected or floating.
Q: How can I use the TPS3828-33DBVR in a microcontroller system? A: The RESET pin can be connected to the reset input of the microcontroller. When the monitored voltage drops below 3.3V, it will reset the microcontroller.
Q: Does the TPS3828-33DBVR require any external components? A: Typically, the TPS3828-33DBVR does not require additional components for basic functionality, though some decoupling capacitor s may be recommended for stability.
Q: Is the TPS3828-33DBVR suitable for automotive applications? A: While the TPS3828-33DBVR has an extended voltage range, it is not specifically rated for automotive use. For automotive applications, a specific automotive-grade supervisor IC should be chosen.
Q: Can the TPS3828-33DBVR be used to monitor voltages other than 3.3V? A: No, the TPS3828-33DBVR is specifically designed for 3.3V threshold voltage. For other thresholds, you would need a different part number in the TPS38xx series.
Q: What is the reset delay time for the TPS3828-33DBVR? A: The reset delay time is typically 200ms after VDD exceeds the threshold.
Q: Is the TPS3828-33DBVR available in other packages? A: The TPS3828-33DBVR is available in the SOT-23-5 package. For different package options, you may need to refer to other variants in the TPS38xx family.
Q: Can the TPS3828-33DBVR be used for 5V systems? A: Yes, the TPS3828-33DBVR can be used in systems with 5V VDD, but it will monitor the 3.3V threshold for resetting.
Q: What is the function of the GND pin? A: The GND pin is the ground connection. It is essential to connect it to the negative side of the power supply for proper operation.
Q: How sensitive is the TPS3828-33DBVR to power supply fluctuations? A: The TPS3828-33DBVR is designed to be sensitive to voltage fluctuations. It will trigger a reset when the supply voltage drops below the defined threshold.
The above table and FAQ provide a comprehensive look at the TPS3828-33DBVR and its functionality, pinout, and common usage scenarios. Let me know if you need further details or more clarifications!
