The part number "TPS767D301QPWPRQ1" corresponds to a Voltage Regulator manufactured by Texas Instruments (TI), specifically part of the TPS767 family of regulators. It is commonly used in Power management applications.
1. Package Type:
The part TPS767D301QPWPRQ1 is housed in a QFN-20 (Quad Flat No-leads) package. QFN-20 means the package has 20 pins arranged in a flat, leadless form factor.2. Pin Functions and Description:
Here is a detailed description of each pin's function:
Pin Number Pin Name Pin Type Pin Function Description 1 IN+ Input Power input pin. Provides the voltage source to the regulator. Typically connects to the input voltage supply. 2 IN- Input Inverting input pin (for differential configurations), typically left floating in single-ended designs. 3 FB Input Feedback input pin. Used to regulate the output voltage through an external resistor divider. 4 EN Input Enable pin. When low, the regulator is disabled; when high, the regulator is enabled. 5 NC N/C No connection pin. Reserved and should not be used for any circuit connection. 6 Vout Output Output voltage pin. Provides the regulated output voltage to the load. 7 GND Ground Ground pin. Connected to the system ground. 8 Vcc Power Power supply pin. Connects to the input supply voltage. 9 COMP Output Compensation pin. Used for stabilizing the feedback loop with external components (e.g., capacitor s). 10 FB2 Input Second feedback pin for higher precision and regulation. 11 PGND Ground Power ground pin. Provides ground for power management functions. 12 SD Input Shutdown pin. Activates the shutdown mode when pulled low, turning off the regulator. 13 SW1 Output Switching output pin for power conversion, typically used in step-down regulators. 14 SW2 Output Additional switching output pin for more complex power designs. 15 Vref Reference Internal voltage reference pin. Provides a stable reference for regulation purposes. 16 Vo2 Output Secondary output pin for additional regulated voltage (optional based on design). 17 Vbias Power Bias voltage pin, helps power internal circuitry of the regulator. 18 THERM Output Temperature sensor pin. Provides temperature-related information or error signals. 19 LDO Output Low Dropout Regulator output pin. Provides a regulated output with low dropout voltage. 20 TEMP Input Input for external temperature sensing for thermal regulation purposes.3. Frequently Asked Questions (FAQ):
Q: What is the function of the EN pin on TPS767D301QPWPRQ1? A: The EN pin is the enable pin of the TPS767D301QPWPRQ1 regulator. When driven high, it enables the regulator, and when driven low, it disables the regulator, putting it in shutdown mode.
Q: How do I calculate the output voltage for the TPS767D301QPWPRQ1? A: The output voltage can be calculated using the feedback resistor network connected to the FB pin. The formula is Vout = Vref * (1 + R1/R2), where Vref is the internal reference voltage and R1, R2 are the resistors.
Q: What is the recommended input voltage range for the TPS767D301QPWPRQ1? A: The recommended input voltage range is typically between 3.3V to 20V, depending on the desired output voltage and load conditions.
Q: Can I use the TPS767D301QPWPRQ1 for both step-up and step-down applications? A: The TPS767D301QPWPRQ1 is designed as a step-down (buck) regulator. For step-up applications, a different IC would be required.
Q: What is the significance of the FB pin on the TPS767D301QPWPRQ1? A: The FB pin is used for voltage feedback and regulation. By connecting it to a voltage divider, you can set the output voltage based on the reference voltage and feedback ratio.
Q: What is the maximum output current that the TPS767D301QPWPRQ1 can supply? A: The maximum output current depends on the thermal conditions and external components. The device can typically supply up to 3A of continuous current.
Q: What is the thermal shutdown feature of the TPS767D301QPWPRQ1? A: The TPS767D301QPWPRQ1 includes thermal shutdown protection that automatically disables the regulator if the internal temperature exceeds a safe operating limit, protecting the device from damage.
Q: Can the TPS767D301QPWPRQ1 be used for high-frequency applications? A: Yes, the TPS767D301QPWPRQ1 is suitable for a wide range of applications, including those requiring high-frequency regulation, due to its fast response time and low noise output.
Q: Is the TPS767D301QPWPRQ1 a low-noise regulator? A: Yes, the TPS767D301QPWPRQ1 is designed with low-noise characteristics, making it suitable for sensitive analog and RF applications.
Q: How do I implement a soft-start feature with the TPS767D301QPWPRQ1? A: The soft-start feature is typically implemented by adding a capacitor or an external circuit to the COMP pin. This limits the inrush current during startup.
Q: What is the maximum input voltage for the TPS767D301QPWPRQ1? A: The maximum input voltage is typically 20V, but it is essential to check the datasheet for the specific voltage ratings to avoid damage to the device.
Q: What external components are required for the TPS767D301QPWPRQ1? A: External components typically include input and output capacitors, feedback resistors, and sometimes inductors, depending on the configuration and the desired performance.
Q: What is the output voltage tolerance of the TPS767D301QPWPRQ1? A: The TPS767D301QPWPRQ1 typically provides an output voltage tolerance of around ±2% depending on the load and operating conditions.
Q: How do I connect the GND pin? A: The GND pin should be connected to the system ground, ensuring a low-resistance connection for optimal performance.
Q: Can I use the TPS767D301QPWPRQ1 for automotive applications? A: Yes, the TPS767D301QPWPRQ1 is automotive-qualified, making it suitable for use in automotive and other high-reliability applications.
Q: What is the typical quiescent current of the TPS767D301QPWPRQ1? A: The typical quiescent current is low, typically around 50 µA, making it suitable for battery-powered applications.
Q: Does the TPS767D301QPWPRQ1 support overcurrent protection? A: Yes, the TPS767D301QPWPRQ1 includes built-in overcurrent protection to prevent damage under high current conditions.
Q: Can I parallel multiple TPS767D301QPWPRQ1 regulators? A: Yes, multiple regulators can be paralleled for higher current requirements, but proper load sharing techniques should be followed.
Q: What is the significance of the Vbias pin? A: The Vbias pin provides bias voltage to the internal circuitry of the regulator, ensuring stable operation.
Q: How can I implement a thermal shutdown feature in my design? A: The thermal shutdown feature is integrated into the TPS767D301QPWPRQ1. It automatically engages when the internal temperature exceeds a set limit.
This detailed response provides a full description of the pin functions and common questions associated with the TPS767D301QPWPRQ1. Each pin function is clearly defined, and the FAQ section should answer many common queries about the device's features and usage.