TLV1822QDRQ1

Comparators Overview

The TLV1822QDRQ1 is an automotive-grade, dual-channel micro-power high-voltage comparator from Texas Instruments. It features rail-to-rail inputs and open-drain outputs capable of pulling up to 40V independent of the supply voltage. The device operates on a wide supply range of 2.4V to 40V with a quiescent current of 5µA per channel. Key electrical parameters include a typical propagation delay of 420ns, input offset voltage of 500µV, and input bias current of 150fA. It includes a Power-On Reset (POR) feature for known startup states.

Comparators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for Grade 1 temperature ranges.

Comparators Applications

• HEV/EV and power train systems
• Infotainment and cluster applications
• Body control modules

Comparators Procurement Notes

Verify the specific package suffix 'D' corresponds to the SOIC-8 footprint required for your PCB layout. Confirm that the 'Q1' designation meets your project's automotive reliability requirements. Ensure the open-drain output configuration aligns with your system's logic level translation needs. Check for any recent documentation updates regarding functional safety manuals or pinout revisions before finalizing procurement.

Comparators Selection Notes

Select this component when a dual-channel comparator with high-voltage tolerance and low static power consumption is required. The open-drain output is suitable for interfacing with different voltage domains via external pull-up resistors. Consider the push-pull variant if sourcing current capability is needed without external components. Verify that the 40V maximum rating covers your system's peak supply conditions.

Comparators Part Context

This part belongs to the TLV18xx-Q1 family of comparators, which offers both single, dual, and quad channel options. The family shares common specifications such as 40V operation, 5µA quiescent current, and rail-to-rail inputs. The TLV1822-Q1 specifically provides the open-drain output option within the dual-channel form factor, distinguishing it from the push-pull TLV1812-Q1.

Comparators Replacement Considerations

TLV1822QPWRQ1 (TSSOP-8 package)

Comparators FAQ

What is the function of the Power-On Reset (POR) feature?

The POR ensures the output remains in a known state until the minimum supply voltage is reached, preventing false outputs during system power-up and power-down.

Can the open-drain output be pulled up to a voltage higher than the supply voltage?

Yes, the open-drain output can be pulled up to 40V independent of the comparator's supply voltage.