TL391LVQDBVRQ1

Comparators Overview

The TL391LVQDBVRQ1 is an automotive-grade, low-voltage, single-channel analog comparator manufactured by Texas Instruments. It operates within a supply voltage range of 1.65 V to 5.5 V and consumes a typical operating current of 26 uA. The device features rail-to-rail input capability and an open-collector output capable of sourcing up to 100 mA per channel. Key electrical specifications include a maximum input offset voltage of 2 mV, input bias current of 5 pA, and propagation delay of 600 ns. It provides a common-mode rejection ratio of 60 dB and power supply rejection ratio of 70 dB. The component is housed in a SOT-23-5 package and supports operation across a temperature range from -40°C to +125°C.

Comparators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle applications
• Low-voltage operation enabled by a minimum supply voltage of 1.65 V
• Rail-to-rail input stage allows signal processing near supply rails
• High-current open-collector output supports direct driving of loads

Comparators Applications

• Automotive sensor signal conditioning
• Battery management system monitoring
• Low-voltage threshold detection circuits

Comparators Procurement Notes

Verify the complete part number including the Q1 suffix to confirm automotive grade status. Ensure the SOT-23-5 package variant matches the PCB footprint requirements. Confirm RoHS compliance details through the official datasheet before finalizing procurement. Check for specific ordering suffixes that may affect packaging or testing criteria.

Comparators Selection Notes

Select this component when low quiescent current is critical alongside automotive reliability requirements. The open-collector output necessitates an external pull-up resistor; ensure the chosen resistor value aligns with the desired switching speed and logic levels. Verify that the 600 ns propagation delay meets the timing constraints of the target application compared to faster alternatives.

Comparators Part Context

This device belongs to the TL391LV family of comparators designed specifically for low-power and low-voltage environments. The Q1 designation indicates it meets the rigorous quality and reliability standards required for automotive electronics. It serves as a specialized alternative to general-purpose comparators where space, power consumption, and automotive durability are primary design constraints.

Comparators Replacement Considerations

Consult the manufacturer's cross-reference documentation for verified pin-compatible substitutes. Ensure any replacement maintains the same SOT-23-5 package and automotive qualification level.