The part number "TPS386000RGPR" is a product from Texas Instruments. It is a Supervisory IC designed for Power supply sequencing, monitoring, and reset generation. The detailed explanation of pin functions, packaging information, and circuit principles for this device can be found in the datasheet, and I will provide the relevant information about the pin functions and the usage.
Pin Function Specifications and Circuit Principles:
Package Type: The "TPS386000RGPR" is packaged in a QFN-16 package. QFN stands for "Quad Flat No-lead," and this particular package has 16 pins.
Pin Function Table:
Here is the detailed list of each of the 16 pins and their functions:
Pin Number Pin Name Pin Function Description 1 VDD Power supply input pin. Connect this pin to a positive voltage supply (typically 3.3V to 5V). 2 GND Ground pin. Connect this pin to the ground of the system. 3 SENSE Voltage sense input for monitoring the target voltage. This pin is used to detect voltage deviations. 4 PGOOD Power-good output. Indicates whether the monitored voltage is within the acceptable range. 5 RESET Active-low reset output. This signal is generated when the monitored voltage is outside the acceptable range. 6 SENSE2 Additional voltage sense input. Monitors a second voltage rail. 7 PGOOD2 Power-good output for the second monitored rail. Indicates the status of the second rail. 8 RESET2 Active-low reset output for the second monitored voltage rail. 9 NC No connection. This pin is not connected internally and should be left unconnected in the circuit. 10 VDD Power supply input (secondary). Connect to the same supply as pin 1. 11 GND Ground pin. Connect to the same ground as pin 2. 12 SENSE3 Voltage sense input for an additional voltage rail. Used to monitor a third voltage in the system. 13 PGOOD3 Power-good output for the third monitored voltage rail. 14 RESET3 Active-low reset output for the third monitored voltage rail. 15 RESET4 Active-low reset output for a fourth monitored voltage rail. 16 SENSE4 Voltage sense input for a fourth voltage rail.Circuit Principles:
The device monitors the input voltage rails through the SENSE pins. If the voltage is within the programmed threshold, the corresponding PGOOD pin will indicate a high output. If the voltage deviates from the acceptable range, the RESET pins will be triggered to low, signaling a fault condition. The PGOOD output is used to indicate a healthy or valid power supply, while the RESET pins are used to reset system components in case of a fault or abnormal power condition. The IC includes multiple sense and reset outputs, allowing it to monitor and control the state of several different voltage rails within a system.Frequently Asked Questions (FAQs) about TPS386000RGPR:
Q: What is the purpose of the TPS386000RGPR? A: The TPS386000RGPR is a voltage supervisor IC used for power sequencing, monitoring, and generating reset signals for power systems.
Q: How many pins does the TPS386000RGPR have? A: The TPS386000RGPR has 16 pins in the QFN-16 package.
Q: What is the recommended operating voltage for the VDD pin? A: The VDD pin should be supplied with a voltage between 3.3V and 5V.
Q: What should I connect the GND pin to? A: The GND pin should be connected to the ground of the system.
Q: What does the RESET output do? A: The RESET output goes low to signal a fault condition when a monitored voltage rail is out of range.
Q: What is the function of the PGOOD pin? A: The PGOOD pin outputs a high signal when the monitored voltage is within the acceptable range.
Q: How does the device sense voltage? A: The device uses the SENSE pins to monitor the voltage of different rails in the system.
Q: How many voltage rails can the TPS386000RGPR monitor? A: The TPS386000RGPR can monitor up to four voltage rails, each with a corresponding SENSE, PGOOD, and RESET output.
Q: What happens if the voltage on a sense pin goes outside the threshold? A: If the voltage goes outside the programmed threshold, the corresponding RESET output will go low.
Q: Can I use this IC for multiple voltage rails in my system? A: Yes, the TPS386000RGPR is designed to monitor multiple voltage rails simultaneously.
Q: Can the device generate multiple reset signals for different voltage rails? A: Yes, the device generates multiple reset signals, one for each monitored voltage rail.
Q: What is the purpose of the NC pin? A: The NC pin is not connected internally and should be left unconnected in the circuit.
Q: Can I use the TPS386000RGPR in a 5V system? A: Yes, the TPS386000RGPR operates within a 3.3V to 5V supply range.
Q: How does the TPS386000RGPR handle fault conditions? A: When a voltage is out of range, the RESET output is activated to signal a fault condition.
Q: Is the TPS386000RGPR suitable for use in automotive applications? A: The device is not specifically rated for automotive applications. Check the datasheet for more details on environmental ratings.
Q: Can I cascade multiple TPS386000RGPR devices? A: Yes, you can cascade multiple devices to monitor more than four voltage rails, but the design should consider the output reset logic.
Q: What is the typical application for the TPS386000RGPR? A: It is commonly used in systems requiring multiple power rails with reset and sequencing control, such as in FPGA s, microcontrollers, and other complex power systems.
Q: Does the device have an internal watchdog timer? A: The TPS386000RGPR does not feature an internal watchdog timer. It only monitors voltage and generates reset signals.
Q: What is the maximum output current for the PGOOD pin? A: The datasheet specifies the maximum current for the PGOOD pin, which is typically around 10mA; check the datasheet for more details.
Q: How should I handle the reset output in my system design? A: The RESET output is an active-low signal. It can be used to reset processors, FPGAs, or other critical components in your system when the monitored voltage is out of range.
This information should give a detailed overview of the TPS386000RGPR device's functionality, pinouts, and typical usage.