The model you mentioned, "TPS70933DRVR," is part of Texas Instruments. It is a Low Dropout (LDO) Voltage Regulator IC, specifically designed to provide stable output voltage for systems that require low dropout characteristics.
Package Type and Pin Function Specifications
The "TPS70933DRVR" typically comes in a SOT-23-5 package. This is a 5-pin package, and here is a detailed breakdown of each pin function:
Pin Number Pin Name Pin Type Function Description Pin 1 VIN Input Input Voltage Pin - This pin is where the input voltage is supplied to the regulator. The voltage must be higher than the output voltage by at least the dropout voltage for the regulator to function properly. Pin 2 GND Ground Ground Pin - This pin should be connected to the system ground (0V). Pin 3 EN Input Enable Pin - This pin is used to turn the regulator on or off. It requires a logic high (typically 1.4V or above) to enable the output. Pin 4 VOUT Output Output Voltage Pin - This pin provides the regulated output voltage. It will output the regulated voltage specified for the device. Pin 5 NC No Connect No Connect Pin - This pin is not internally connected to the circuit and should be left floating or tied to ground as per manufacturer recommendations.Package Details
Package Type: SOT-23-5 Number of Pins: 5 Pin Layout: The layout for the SOT-23-5 package is designed for compact integration, making it ideal for applications with space constraints.Pin Function FAQ (20 Frequently Asked Questions)
Q: What is the purpose of Pin 1 on the TPS70933DRVR? A: Pin 1 (VIN) is the input voltage pin, where the supply voltage is applied. It must be higher than the output voltage by at least the dropout voltage.
Q: Can Pin 1 handle a wide range of input voltages? A: Yes, the TPS70933DRVR can operate with input voltages from 2.2V to 6V, as long as the input is higher than the output voltage by the required dropout voltage.
Q: What does Pin 2 (GND) do? A: Pin 2 is the ground pin and should be connected to the system ground.
Q: How should I use Pin 3 (EN)? A: Pin 3 is the enable pin. It should be driven high to enable the regulator output, and low to disable it.
Q: How much voltage is needed to enable the TPS70933DRVR via Pin 3? A: A voltage of at least 1.4V is required to enable the regulator. Below this voltage, the output will be disabled.
Q: What is the role of Pin 4 (VOUT)? A: Pin 4 is the output voltage pin, providing the regulated output voltage to the circuit.
Q: What should be the voltage at Pin 4 (VOUT)? A: The output voltage depends on the specific version of the TPS70933DRVR used, but it is typically 3.3V for the model you mentioned.
Q: Can Pin 5 (NC) be connected to anything? A: No, Pin 5 (NC) is a "no connect" pin. It should not be connected to anything, and it can be left floating.
Q: What is the input voltage range for the TPS70933DRVR? A: The input voltage range is 2.2V to 6V, which allows flexibility in various system designs.
Q: What is the dropout voltage of the TPS70933DRVR? A: The dropout voltage is typically 40mV at light load conditions, making it an ultra-low dropout regulator.
Q: Is thermal management required for this device? A: Yes, proper thermal management should be applied, especially when the input voltage is significantly higher than the output voltage.
Q: Can the TPS70933DRVR be used in battery-powered applications? A: Yes, due to its low dropout voltage, it is ideal for battery-powered systems that need to conserve energy.
Q: What happens if the input voltage drops below the output voltage? A: If the input voltage drops too close to the output, the regulator will stop functioning properly, and the output voltage will drop as well.
Q: How do I know if the TPS70933DRVR is damaged? A: If there is no output voltage on Pin 4 (VOUT) when Pin 3 (EN) is high, or if the input voltage is within the specified range, the device might be damaged.
Q: Can I use the TPS70933DRVR in a 5V system? A: Yes, as long as the input voltage is appropriately higher than the output voltage and within the specified range.
Q: What is the recommended capacitance for the input and output capacitor s? A: The TPS70933DRVR typically requires a 1µF ceramic capacitor on the input and a 1µF ceramic capacitor on the output for stable operation.
Q: What are the typical applications for the TPS70933DRVR? A: Common applications include powering low-voltage analog and digital circuits, providing power to sensors, and systems with tight space requirements.
Q: Is there any protection in the TPS70933DRVR against overcurrent? A: Yes, the device includes internal thermal shutdown and current limiting features to protect against overcurrent and overheating conditions.
Q: What are the output voltage tolerances for the TPS70933DRVR? A: The output voltage tolerance is typically within ±2% of the nominal value at 25°C, ensuring precise regulation.
Q: How do I disable the TPS70933DRVR output? A: To disable the output, simply pull the EN pin (Pin 3) low to turn off the regulator and stop supplying power to the load.
This should give you a comprehensive understanding of the TPS70933DRVR, its pinout, and its functionality. If you need any additional information or have further questions, feel free to ask!
