IN

V-

V+

+

OUT

V

PULL-UP

V

REF

TLV7081

Bias

POR

10

TLV7081

SNOSD69A – MAY 2018 – REVISED JUNE 2018

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7 Detailed Description

7.1 Overview

The TLV7081 is a single-channel, nano-power comparator that does not need a dedicated power supply

connection, and can operate down to 1.7 V. The comparator is available in an ultra-small, WCSP package

measuring 0.7 mm × 0.7 mm, making the TLV7081 applicable for space-critical designs like smartphones and

other portable or battery-powered applications.

The TLV7081 features a wide input-voltage range that is independent of supply voltage. Having an input range

that is independent of supply voltage allows the TLV7081 to be directly connected to sources that are active

even if the TLV7081 is not powered.

The TLV7081 has an open-drain output stage that can be pulled beyond V+, making it appropriate for level

translators and bipolar to single-ended converters.

7.2 Functional Block Diagram

7.3 Feature Description

The TLV7081 is a single-channel, nano-power comparator that operates down to 1.7 V. The inverting input is

internally tied to V+ which helps to streamline applications which use supply as the reference. The non-inverting

input IN extends to 5.6 V which is independent of the power supply V+ (1.7 V - 5.5 V) and it's available in an

ultra-small, WCSP package measuring 0.7 mm × 0.7 mm.

7.4 Device Functional Modes

The TLV7081 has a power-on-reset (POR) circuit. While the power supply (VS) is greater than VPOR (typically 1V)

and less than the minimum operating supply voltage, either upon ramp-up or ramp-down, the POR circuitry is

activated.

The POR circuit keeps the output high impedance (logical high) while activated.

When the supply voltage is greater than, or equal to, the minimum supply voltage, the comparator output reflects

the state of the input IN.