The part number "TPS74801RGWR" corresponds to a Texas Instruments (TI) product. This part is a low-dropout (LDO) regulator used to supply voltage in electronic circuits. The "RGWR" in the part number refers to a specific package type, and based on this, the part comes in a WQFN-16 (4x4mm) package, which has 16 pins.
Here is the detailed explanation of the pin function specifications, as well as a table showing the full pinout and its usage instructions. After that, I’ll provide a list of 20 FAQ-style questions and answers related to this part.
Pinout and Pin Function Details
The TPS74801RGWR is a 16-pin WQFN package, and here are the details for each pin:
Pin Number Pin Name Pin Type Function Description Usage Description 1 VIN Input Voltage Input Input voltage to the regulator, typically 2.3V to 5.5V. 2 EN Input Enable Active high input to enable the regulator. Low to disable. 3 GND Ground Ground Ground connection for the device. 4 VOUT Output Voltage Output Regulated output voltage, typically set to 1.8V, 3.3V, or other values. 5 VOUT2 Output Additional Voltage Output For providing another regulated voltage if required. 6 NC No Connect Not connected This pin is not internally connected. 7 FB Input Feedback Input Voltage feedback for the regulator. Connect to a resistive divider for regulation. 8 NC No Connect Not connected This pin is not internally connected. 9 PG Output Power Good Open-drain output that indicates if the output voltage is within regulation. 10 PGOOD Output Power Good Same function as PG, indicating proper output voltage. 11 OUT2 Output Output Voltage 2 Second regulated voltage output pin. 12 PGND Power Ground Power Ground Connect to system ground for high-current return path. 13 PWRGD Output Power Good Indicates whether the power supply is operating normally. 14 NC No Connect Not connected Not internally connected. 15 GND Ground Ground Another ground connection, usually for high current paths. 16 NC No Connect Not connected Not internally connected.Common FAQ for TPS74801RGWR
Here are the 20 frequently asked questions (FAQ) for this device:
Q: What is the input voltage range for the TPS74801RGWR? A: The input voltage range for the TPS74801RGWR is from 2.3V to 5.5V.
Q: What is the output voltage of the TPS74801RGWR? A: The output voltage of the TPS74801RGWR is adjustable depending on external resistors. It typically provides 1.8V, 3.3V, or other voltage configurations.
Q: How does the enable (EN) pin work on this part? A: The EN pin is used to enable or disable the regulator. When the EN pin is high, the device operates; when it is low, the device is disabled.
Q: Can the TPS74801RGWR be used in a system that requires multiple output voltages? A: Yes, the device provides multiple output pins (VOUT, VOUT2) for systems that require more than one regulated output voltage.
Q: What does the "Power Good" (PG) pin do? A: The PG pin is an open-drain output that indicates whether the output voltage is within regulation.
Q: What is the recommended input capacitance for the TPS74801RGWR? A: A recommended input capacitance of 10µF ceramic capacitor is typical for stable operation.
Q: What is the recommended output capacitance for stable operation? A: A 10µF ceramic output capacitor is recommended for the TPS74801RGWR.
Q: Can the TPS74801RGWR regulate 5V input to a lower voltage output? A: Yes, the device can regulate a 5V input down to 3.3V, 1.8V, or other specified output voltages.
Q: What is the typical dropout voltage for the TPS74801RGWR? A: The typical dropout voltage is 50mV to 300mV, depending on the output current.
Q: Is there overcurrent protection on the TPS74801RGWR? A: Yes, the device features overcurrent protection to safeguard the regulator from excessive current draw.
Q: What is the thermal shutdown feature of the TPS74801RGWR? A: The TPS74801RGWR includes a thermal shutdown feature that turns off the regulator if it overheats to prevent damage.
Q: What is the efficiency of the TPS74801RGWR under typical conditions? A: The efficiency of the device is typically high due to its low dropout voltage, which reduces wasted power.
Q: Does the TPS74801RGWR require any special external components for operation? A: The device requires external capacitors for stability, typically a 10µF input and output capacitor.
Q: What is the output voltage tolerance of the TPS74801RGWR? A: The output voltage tolerance is typically within ±2% of the nominal value.
Q: How do I use the feedback pin (FB) for adjusting the output voltage? A: The feedback pin is used to connect a resistive divider to set the desired output voltage. The feedback voltage is compared to an internal reference.
Q: How does the TPS74801RGWR handle transient loads? A: The TPS74801RGWR includes a low dropout design that ensures stable operation even under fast transient loads.
Q: What is the maximum output current the TPS74801RGWR can provide? A: The device can typically provide up to 1A of output current.
Q: Is the TPS74801RGWR RoHS compliant? A: Yes, the TPS74801RGWR is RoHS compliant.
Q: What is the operating temperature range for the TPS74801RGWR? A: The operating temperature range is from -40°C to 125°C.
Q: What happens if the EN pin is left floating? A: If the EN pin is left floating, the device will be disabled, as it requires a logic high to operate.
Let me know if you need more details or specific explanations!
