TPS73601DBVR Detailed explanation of pin function specifications and circuit principle instructions

The part number "TPS73601DBVR" corresponds to a voltage regulator from Texas Instruments (TI). Specifically, it is a low dropout regulator (LDO) designed for use in various applications that require precise voltage regulation.

Pin Function Specifications and Circuit Principle Instructions

The TPS73601DBVR is packaged in a SOT-23-5 package, which features a total of 5 pins. Below is a detailed explanation of each of these 5 pins:

Pin Function List (For the SOT-23-5 Package): Pin Number Pin Name Pin Type Description 1 VOUT Output The output voltage pin. This is the regulated voltage output, which provides the desired voltage to the load. 2 GND Ground This pin is the ground reference for the regulator. It should be connected to the ground of the system. 3 IN Input The input voltage pin. This is where the unregulated voltage is applied, typically a higher voltage that the regulator steps down. 4 ON/OFF Control The ON/OFF control pin. When this pin is pulled high, the regulator is enabled, and when it is pulled low, the regulator is disabled. 5 NC No Connect This pin is not internally connected to anything and can be left floating or used for mechanical support.

Circuit Principle Instructions:

Input Voltage: The input voltage (IN) is typically higher than the regulated output voltage (VOUT). The TPS73601DBVR is a low-dropout (LDO) regulator, meaning it can function with a small difference between input and output voltages. This is especially useful for battery-operated devices or systems where the input voltage is close to the desired output voltage.

Output Voltage: The VOUT pin provides the regulated voltage to the system. It can be set to a specific value using external components, typically resistors. The output voltage is stable, provided the input voltage is sufficiently higher than the output, as per the LDO’s dropout voltage specifications.

Ground: The GND pin serves as the common reference point for the regulator’s input and output voltages. Proper grounding is critical for the stability and accurate operation of the regulator.

Control Pin: The ON/OFF pin is used to control the operation of the regulator. By pulling the ON/OFF pin high, the regulator turns on and provides the output voltage. Pulling it low disables the regulator, which can be used to conserve energy in power-sensitive applications.

No Connect (NC): This pin does not serve any electrical function within the circuit. It is typically used for mechanical purposes or may be omitted in certain designs.

Frequently Asked Questions (FAQ)

Q: What is the input voltage range for the TPS73601DBVR? A: The input voltage range for the TPS73601DBVR is from 2.5V to 6V.

Q: What is the output voltage range? A: The output voltage of the TPS73601DBVR is 3.3V, and it is a fixed output voltage version.

Q: What is the dropout voltage of the TPS73601DBVR? A: The typical dropout voltage is 40mV at 100mA output current.

Q: How does the ON/OFF pin work? A: The ON/OFF pin enables or disables the regulator. A high signal enables the regulator, and a low signal disables it.

Q: Can the TPS73601DBVR be used in battery-powered applications? A: Yes, due to its low dropout voltage, the TPS73601DBVR is suitable for use in battery-powered systems, especially where the input voltage is only slightly higher than the output voltage.

Q: What is the typical output current that the TPS73601DBVR can supply? A: The TPS73601DBVR can supply up to 150mA of output current.

Q: What is the maximum output current for the TPS73601DBVR? A: The maximum output current is 150mA, and exceeding this can result in thermal shutdown or damage.

Q: Is thermal protection built into the TPS73601DBVR? A: Yes, the TPS73601DBVR includes thermal shutdown protection, which prevents overheating if the regulator is overloaded.

Q: Does the TPS73601DBVR have overcurrent protection? A: Yes, the TPS73601DBVR has built-in overcurrent protection to prevent damage under fault conditions.

Q: What is the operating temperature range for the TPS73601DBVR? A: The operating temperature range is from -40°C to +125°C.

Q: Can the TPS73601DBVR be used for higher power applications? A: No, the TPS73601DBVR is designed for low-power applications with a maximum output current of 150mA. For higher power needs, a different regulator should be considered.

Q: What is the quiescent current of the TPS73601DBVR? A: The typical quiescent current is around 30µA when the regulator is enabled.

Q: How can the TPS73601DBVR be used in power-sensitive applications? A: The TPS73601DBVR is ideal for power-sensitive applications due to its low quiescent current and low dropout voltage.

Q: Is the TPS73601DBVR available in other output voltage versions? A: The TPS73601DBVR is available in fixed voltage versions, such as 3.3V. For other output voltages, you may need to look for other models or use external feedback components.

Q: What type of package is the TPS73601DBVR available in? A: The TPS73601DBVR is available in the SOT-23-5 package.

Q: Is the TPS73601DBVR lead-free? A: Yes, the TPS73601DBVR is lead-free and compliant with RoHS standards.

Q: Can the TPS73601DBVR be used in automotive applications? A: Yes, the TPS73601DBVR can be used in automotive applications within its specified operating temperature range of -40°C to +125°C.

Q: What is the typical efficiency of the TPS73601DBVR? A: The efficiency is typically high for LDO regulators but depends on the difference between input and output voltages. The closer the input voltage is to the output, the higher the efficiency.

Q: What should be done if the TPS73601DBVR overheats? A: If the TPS73601DBVR overheats, the built-in thermal shutdown protection will disable the regulator. Allow the device to cool before re-enabling it.

Q: How can I improve the stability of the TPS73601DBVR in my circuit? A: To improve stability, ensure that the input and output capacitor s meet the recommended values as specified in the datasheet, and use proper PCB layout techniques.

The TPS73601DBVR is a robust, low-dropout voltage regulator from Texas Instruments, designed to offer reliable performance in low-power systems. The above explanation covers all pin functions, circuit principles, and frequently asked questions that could assist you in using this component effectively in your designs.