The part number you provided, "TPS73201DBVR," is part of the Texas Instruments product line. This component is a low-dropout (LDO) voltage regulator, and it is often used in applications where a stable voltage is required even with a small difference between input and output voltage.
Package Type:
The "DBVR" suffix indicates that the part comes in a SOT-23-5 package, which is a 5-pin small outline transistor (SOT) package.
Pin Function Specification:
Here is a breakdown of the 5 pins for the TPS73201DBVR in the SOT-23-5 package:
Pin Number Pin Name Function Description Pin 1 IN Input voltage pin. This pin is where the input supply voltage is connected. The device operates with input voltages from 2.2V to 6V. The input voltage should be higher than the output voltage by at least the dropout voltage for proper regulation. Pin 2 GND Ground. This pin should be connected to the ground of the system to complete the circuit. It provides the reference for the output voltage. Pin 3 OUT Output voltage pin. This pin provides the regulated output voltage. The output is set internally to 2.1V (fixed version) but can vary depending on the model (adjustable versions may be available). Pin 4 ON/OFF Enable or ON/OFF control pin. When this pin is high (typically connected to a logic high), the regulator is enabled, providing the output voltage. When low (logic low), the device is disabled and no output voltage is produced. Pin 5 FB Feedback pin. For adjustable versions of the device, this pin is used to set the output voltage via an external resistor divider. For fixed-output versions, this pin is internally connected to a voltage reference.Circuit Principle:
The TPS73201DBVR is a low dropout linear regulator (LDO). Here's an explanation of how it works:
Input voltage (IN) is supplied to the LDO. The regulator uses an internal feedback loop to maintain a constant output voltage at the OUT pin. The ON/OFF pin allows the regulator to be turned on or off based on the input control signal. The FB pin is used for the feedback mechanism in adjustable versions, determining the output voltage. The GND pin provides the reference ground for the operation.This LDO is ideal for applications where a stable, low-noise, low-dropout voltage is needed, such as powering analog circuits, microcontrollers, and other sensitive electronics.
FAQ on the TPS73201DBVR (Pin Function)
Here is a list of 20 Frequently Asked Questions (FAQ) regarding the TPS73201DBVR:
Q: What is the input voltage range for the TPS73201DBVR? A: The input voltage range is from 2.2V to 6V.
Q: What is the output voltage of the TPS73201DBVR? A: The output voltage is 2.1V for the fixed version. For adjustable versions, the output voltage can be set via external resistors.
Q: What is the dropout voltage of the TPS73201DBVR? A: The typical dropout voltage is 40mV at 50mA output current.
Q: What is the maximum output current for the TPS73201DBVR? A: The maximum output current is 200mA.
Q: How can I turn off the TPS73201DBVR? A: The TPS73201DBVR can be turned off by pulling the ON/OFF pin low.
Q: What is the typical quiescent current for the TPS73201DBVR? A: The typical quiescent current is 35µA.
Q: Can I use the TPS73201DBVR for high-power applications? A: No, the TPS73201DBVR is designed for low-power applications with a maximum output current of 200mA.
Q: How do I adjust the output voltage of the TPS73201DBVR? A: For adjustable versions, the output voltage can be set using external resistors connected to the FB pin.
**Q: What is the purpose of the *FB* pin?** A: The FB pin is used for feedback in adjustable versions of the LDO to regulate the output voltage.
Q: What type of package does the TPS73201DBVR come in? A: The TPS73201DBVR comes in a SOT-23-5 package, which has 5 pins.
Q: Can I use the TPS73201DBVR with a 12V input? A: No, the input voltage must be between 2.2V and 6V for proper operation.
Q: Is the TPS73201DBVR suitable for battery-powered applications? A: Yes, it is ideal for battery-powered applications, as it has a low dropout voltage and low quiescent current.
Q: What is the typical output noise of the TPS73201DBVR? A: The typical output noise is low, making it suitable for sensitive analog circuits.
Q: What are the limitations of the TPS73201DBVR? A: The main limitation is the maximum output current of 200mA, which is not suitable for high-power applications.
Q: Can I use the TPS73201DBVR in a multi-output application? A: The TPS73201DBVR is designed for single-output applications. For multiple outputs, you may need multiple regulators.
Q: How can I improve the stability of the TPS73201DBVR? A: Adding a capacitor at the output pin can help improve stability and reduce noise.
Q: What is the thermal shutdown temperature of the TPS73201DBVR? A: The thermal shutdown occurs at 160°C.
Q: Is the TPS73201DBVR a good choice for powering microcontrollers? A: Yes, it is a great choice for powering microcontrollers, as it provides a stable output voltage with low noise.
Q: Can I use the TPS73201DBVR with inductive loads? A: The TPS73201DBVR is better suited for capacitive and resistive loads. Using it with inductive loads may require additional filtering or protection.
Q: Where can I find the full datasheet for the TPS73201DBVR? A: The full datasheet can be found on the Texas Instruments website or by searching for the part number "TPS73201DBVR" in your preferred search engine.
Conclusion:
This component from Texas Instruments is a versatile LDO voltage regulator suitable for a variety of low-power applications. Its small package and low dropout voltage make it ideal for battery-powered systems. By understanding the pin functions and application details, you can easily integrate it into your designs.
