SNVSCN2 September 2024 TPS37100-Q1
ADVANCE INFORMATION
The TPS3710x-Q1 is a family of high voltage and low quiescent current voltage supervisors with overvoltage and undervoltage threshold voltage, delay timings, Built-In Self-Test (TPS37102-Q1 only), and AOUT. The TPS3710x-Q1 over and undervoltage thresholds are device specific and are offered in either adjustable thresholds or fixed thresholds. The adjustable threshold option uses an external resistor ladder to make a voltage divider on SENSE pin which uses the internal 800mV threshold to trigger overvoltage and/or undervoltage faults. The benefit of using an adjustable option with external resistors is the faster reaction speed compared to a fixed internal threshold variant. The TPS3710x-Q1 fixed threshold option utilizes an integrated voltage divider to eliminate the need for external resistors and provides a lower total current consumption.
VDD, SENSE, and OUT A pins can support 105V continuous operation. SENSE has -105V reverse polarity protection for fixed threshold options only. VDD, SENSE, OUT A, and OUT B pins are voltage level independent of each other. Fixed and programmable sense and release time delay options are available to avoid false assertion and false deassertions.
The AOUT pins provides a scaled output voltage from the SENSE for both fixed and adjustable options. The AOUT pin is intended to be sampled with an ADC for supply voltage measurements. The AOUT and supervisor combination simplifies high voltage rail monitoring for low voltage ADCs.