The recommended layout and placement for the TPS3838L30DBVTG4 can be found in the Texas Instruments application note 'TPS3838 Layout and Placement Guidelines' (SLVAE04). It provides guidance on component placement, routing, and thermal considerations to ensure optimal performance and reliability.
The threshold voltage (VIT-) for the TPS3838L30DBVTG4 is typically around 2.93V, but it can vary depending on the specific device and operating conditions. To calculate the threshold voltage, you can use the formula: VIT- = VREF x (1 - (R1/R2)), where VREF is the internal reference voltage (typically 1.2V), R1 is the resistor connected to the VIT- pin, and R2 is the resistor connected to GND.
The DELAY pin on the TPS3838L30DBVTG4 is used to set the delay time between the power-good signal and the reset signal. This allows the system to delay the reset signal until the power supply has stabilized, ensuring that the system boots up correctly. The delay time is set by the external capacitor connected to the DELAY pin.
Yes, the TPS3838L30DBVTG4 can be used as a voltage supervisor for multiple voltage rails. The device has a single voltage sense input (VIN) that can be connected to a resistor divider network to monitor multiple voltage rails. However, the device can only provide a single reset output, so you may need to use additional logic to generate separate reset signals for each voltage rail.
The maximum operating temperature range for the TPS3838L30DBVTG4 is -40°C to 125°C. However, the device is only specified for operation up to 105°C, and the accuracy of the voltage supervisor may degrade at higher temperatures.
TPS3838L30DBVTG4 datasheet
by Texas Instruments
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