The model "TLV70218DBVR" is a part of the Texas Instruments product line. The TLV70218 is a low-voltage, low-quiescent current, precision voltage regulator with a fixed output voltage.
1. Packaging Type:
The "TLV70218DBVR" uses a SOT-23-5 package, which includes five pins.
2. Pin Function Specification and Circuit Principle:
Here is the detailed pinout and explanation of the five pins in the SOT-23-5 package:
Pin Number Pin Name Pin Type Description 1 VOUT Output This is the output pin, providing the regulated output voltage from the device. It is where the load connects to receive the regulated voltage. 2 VIN Input This is the input pin, where the unregulated voltage is applied to the device to be regulated. The input voltage must be higher than the output voltage by at least the dropout voltage. 3 EN Input The enable pin. A logic high level enables the regulator, while a logic low turns it off, placing the device in a shutdown state. 4 NC No Connect This is a no-connect pin. It is internally not connected to the circuit, so it does not affect the operation of the regulator. 5 GND Ground This is the ground pin. It is the reference point for the input and output voltage and must be connected to the system ground.3. Full Pin Function List and Usage Instructions:
Pin 1 - VOUT (Output): Function: Provides the regulated output voltage to the load. Usage Instructions: Ensure that the output voltage is properly connected to the load that requires regulation. The value of the output voltage is determined by the internal circuitry and cannot be adjusted externally. Pin 2 - VIN (Input): Function: This is the input voltage pin, where an unregulated voltage is applied to the device. Usage Instructions: The input voltage must be higher than the output voltage by the required dropout voltage for proper operation. It is essential to ensure that the input voltage is within the specified range for the device to work. Pin 3 - EN (Enable): Function: Controls whether the voltage regulator is enabled or in shutdown mode. Usage Instructions: Apply a logic high (typically above 1.5V) to enable the regulator. To disable the regulator, apply a logic low (below 0.4V). This pin can be driven directly by a microcontroller or logic signal. Pin 4 - NC (No Connect): Function: This pin is not internally connected to any part of the circuit. Usage Instructions: This pin can be left floating or connected to ground or any other appropriate signal, but it will not affect the operation of the device. Pin 5 - GND (Ground): Function: Ground pin, the reference for input and output voltages. Usage Instructions: Connect this pin directly to the system ground to ensure proper operation and reference for the input and output voltages.4. 20 Frequently Asked Questions (FAQs) about the TLV70218DBVR:
1. What is the output voltage of the TLV70218DBVR?Answer: The output voltage of the TLV70218DBVR is a fixed value of 1.8V.
2. What is the input voltage range for the TLV70218DBVR?Answer: The input voltage range for the TLV70218DBVR is 2.2V to 5.5V.
3. Can I adjust the output voltage of the TLV70218DBVR?Answer: No, the TLV70218DBVR has a fixed output voltage of 1.8V, and it cannot be adjusted externally.
4. What is the dropout voltage for the TLV70218DBVR?Answer: The dropout voltage for the TLV70218DBVR is typically 30mV at 1mA load and 250mV at 150mA load.
5. How do I enable or disable the TLV70218DBVR?Answer: To enable the device, apply a logic high (typically above 1.5V) to the EN pin. To disable, apply a logic low (below 0.4V) to the EN pin.
6. What is the quiescent current of the TLV70218DBVR?Answer: The quiescent current is typically 25nA, which makes the device suitable for battery-powered applications.
7. Can I use the TLV70218DBVR in a 5V system?Answer: Yes, the TLV70218DBVR can be used in a 5V system as the input voltage range extends up to 5.5V.
8. What is the maximum output current for the TLV70218DBVR?Answer: The TLV70218DBVR can supply up to 150mA of output current.
9. What is the package type of the TLV70218DBVR?Answer: The TLV70218DBVR is available in a SOT-23-5 package.
10. Is the TLV70218DBVR suitable for use in automotive applications?Answer: The TLV70218DBVR is not explicitly rated for automotive applications, but it can be used in a wide range of systems where low power consumption is critical.
11. How do I connect the ground for the TLV70218DBVR?Answer: Connect the GND pin (Pin 5) directly to the system ground for proper operation.
12. Can the TLV70218DBVR be used with capacitive loads?Answer: Yes, the TLV70218DBVR is designed to work with capacitive loads, but it is recommended to use a 1µF to 10µF ceramic capacitor for stability.
13. What is the thermal shutdown temperature for the TLV70218DBVR?Answer: The thermal shutdown temperature for the TLV70218DBVR is 150°C.
14. How does the TLV70218DBVR handle transient response?Answer: The TLV70218DBVR features fast transient response, ensuring stable output voltage during load changes.
15. What is the maximum operating temperature for the TLV70218DBVR?Answer: The maximum operating temperature is 125°C.
16. Does the TLV70218DBVR require external resistors for operation?Answer: No, the TLV70218DBVR does not require external resistors for setting the output voltage because it has a fixed output.
17. Can I use the TLV70218DBVR to power sensitive analog circuits?Answer: Yes, the low quiescent current and low noise characteristics of the TLV70218DBVR make it suitable for powering sensitive analog circuits.
18. Can I use the TLV70218DBVR in a portable device?Answer: Yes, its low quiescent current and small SOT-23-5 package make it ideal for use in portable devices.
19. What is the efficiency of the TLV70218DBVR?Answer: The efficiency depends on the input-output voltage difference, but as a low-dropout regulator, it operates with high efficiency in many use cases.
20. How should I handle the TLV70218DBVR during assembly?Answer: Follow standard SMD (Surface-Mount Device) assembly procedures. Ensure proper soldering of all pins to avoid poor connections.
This covers the detailed explanation of the TLV70218DBVR model, including its pin functions, usage, and FAQs.
