The model "TPS26631PWPR" belongs to Texas Instruments (TI), which is a renowned manufacturer of semiconductor products and analog integrated circuits.
Package Type:
The "TPS26631PWPR" model comes in a TSSOP-20 package. This package has 20 pins in total, with each pin serving a specific function in the device's operation.Pin Function Specifications:
Below is the detailed explanation of the pin functions and the usage of each pin. Since this device has 20 pins, the following list provides the corresponding functions for each of them:
Pin Number Pin Name Pin Function Description 1 VDD Power supply pin (Input voltage, typically 3.3V to 5V for proper operation). 2 GND Ground pin (Connect to system ground for proper operation). 3 EN (Enable) Enable control pin (When low, the device is disabled; when high, the device is enabled). 4 Fault Fault indication pin (Active low signal when a fault condition is detected). 5 OUT Output voltage pin (Provides regulated output based on the device's function). 6 PGND Power ground pin (Must be connected to the system's power ground to complete the circuit). 7 SNS+ Positive current sense input ( Monitors the input current for current limit or overload protection). 8 SNS- Negative current sense input (Works in conjunction with SNS+ for current sensing). 9 ISET Current setting pin (Set the current limit threshold based on an external resistor). 10 VID Voltage identification input (Used to adjust the output voltage dynamically). 11 PGOOD Power good signal (Indicates the operational status of the device, typically high when the device is functioning properly). 12 STBY Standby pin (Used to place the device in a low-power standby mode). 13 Vout Output voltage pin (Connects to the load requiring regulated voltage output). 14 FB Feedback input (Monitors output voltage for regulation; typically connected to the output to form a feedback loop). 15 TRK Tracking input (Used to track another supply’s voltage or adjust output voltage according to external conditions). 16 NC No connection (Unused or internal connection; typically left floating). 17 ALIM Auxiliary input for additional power (Optional, based on device configuration). 18 SEL Selection pin (Used to select certain operational modes or configure the device’s behavior). 19 TST Test pin (Used for factory testing or debugging). 20 NC No connection (Unused pin, may be internally connected to a different part of the device).Pin Function FAQs (20 Common Questions):
Q: What is the purpose of pin 1, VDD? A: Pin 1, VDD, provides the input power supply voltage to the device, typically between 3.3V to 5V, enabling proper operation of the device.
Q: How should pin 2, GND, be connected? A: Pin 2, GND, must be connected to the system's ground to ensure a proper reference for the device's operation.
Q: What does pin 3, EN, control? A: Pin 3, EN (Enable), controls the device's power state. A high signal enables the device, while a low signal disables it.
Q: What does pin 4, Fault, indicate? A: Pin 4, Fault, indicates a fault condition by outputting a low signal when the device encounters an issue such as overcurrent or overvoltage.
Q: What is the function of pin 5, OUT? A: Pin 5, OUT, provides the regulated output voltage, which is used to power the downstream circuit.
Q: Can I use pin 6, PGND, for general grounding? A: Pin 6, PGND, should specifically be used for the power ground connection, separate from the system's general ground to avoid noise interference.
Q: What is the role of pins 7 and 8, SNS+ and SNS-? A: Pins 7 (SNS+) and 8 (SNS-) are used for current sensing, allowing the device to monitor the input current for safety features like current limiting.
Q: How do I set the current limit with pin 9, ISET? A: Pin 9, ISET, is used to set the current limit threshold by connecting an external resistor, which defines the current limit level.
Q: What is the function of pin 10, VID? A: Pin 10, VID, allows for voltage identification, enabling dynamic adjustments to the output voltage based on external control signals.
Q: What is the Power Good signal on pin 11? A: Pin 11, PGOOD, provides a high signal when the device is operating correctly and within voltage specifications.
Q: How does pin 12, STBY, affect the device? A: Pin 12, STBY, puts the device in a low-power standby mode when activated, reducing power consumption when the device is not in active use.
Q: What is the purpose of pin 13, Vout? A: Pin 13, Vout, delivers the regulated output voltage to power external circuits.
Q: What is the role of pin 14, FB? A: Pin 14, FB (Feedback), is used to regulate the output voltage by feeding back a portion of the output to the internal control loop.
Q: How does pin 15, TRK, work? A: Pin 15, TRK, allows the output voltage to track the voltage of another supply, providing dynamic voltage adjustment based on external conditions.
Q: What is pin 16, NC, used for? A: Pin 16, NC, is typically not connected to any internal functionality and can be left unconnected in most applications.
Q: What is the purpose of pin 17, ALIM? A: Pin 17, ALIM, provides an auxiliary power input for specific device configurations, though it may not be used in all cases.
Q: How is pin 18, SEL, used? A: Pin 18, SEL, is used for selecting operational modes or configuring certain device parameters depending on the application.
Q: What is pin 19, TST, used for? A: Pin 19, TST, is used for factory testing or debugging purposes and should generally not be connected in standard applications.
Q: What is the significance of pin 20, NC? A: Pin 20, NC, is a no-connection pin, meaning it is either unused or connected internally within the device.
Q: Can I leave unused pins (like NC) unconnected? A: Yes, unused pins like NC can typically be left unconnected as they serve no functional purpose in most standard applications.
This detailed explanation provides a comprehensive overview of the "TPS26631PWPR" pin functions, their specifications, and the role each pin plays in the device's operation.