Texas Instruments TLV7081YKAR

Overview

TLV7081YKAR from Texas Instruments is a single-channel, nano-power comparator with open-drain output, operating from 1.7 V to 5.5 V supply and featuring 370 nA quiescent current, 4 µs propagation delay, 10 mV internal hysteresis, and input voltage range up to 5.6 V independent of supply-designed for battery voltage monitoring in space-constrained portable electronics.

For engineers reviewing the TLV7081YKAR datasheet, TLV7081YKAR pinout, TLV7081YKAR application, or TLV7081YKAR equivalent, key selection considerations include ultra-low IQ for multi-year battery life, fault-tolerant input operation during system power-down, open-drain level-shifting capability up to 5.5 V, and WCSP package compatibility with high-density PCB layouts.

Technical Context

The TLV7081YKAR implements a rail-to-rail input stage with the inverting input internally tied to V+, enabling direct use of the supply as reference. Its input operates from V− to 5.6 V regardless of V+ value-allowing connection to active external sources even when unpowered.

It integrates a power-on-reset (POR) circuit that holds the open-drain output in high-impedance state until supply reaches ≥1 V, then transitions to normal comparator operation. Internal 10 mV hysteresis suppresses noise-induced output oscillation without requiring external components.

Key Specifications

Pinout & Package

TLV7081YKAR uses a 0.7 mm × 0.7 mm, 4-bump DSBGA (WCSP) package designated YKA - optimized for minimal PCB footprint in ultra-thin portable devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nano-power comparator applications.

Compared with TLV7081YKAR, TLV7041YFPR offers lower IQ and faster response but sacrifices input voltage independence and open-drain flexibility; TLV7031YFPR matches input range but replaces open-drain with push-pull-making TLV7081YKAR uniquely suited for level-translating, zero-power-sense, and ultra-compact designs.

Availability

TLV7081YKAR is available at Aetrix Electronics and suitable for smartphone battery management, portable medical device monitoring, IoT sensor node power supervision, optical module bias control, and industrial edge-node voltage supervision requiring stable component supply across long product lifecycles.

Supply support for TLV7081YKAR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in precision analog, low-power design, and high-reliability packaging technologies.

The TLV7081YKAR belongs to TI's nano-power comparator family, engineered specifically for ultra-low-quiescent-current voltage monitoring in battery-powered and space-constrained systems - emphasizing fault tolerance, input flexibility, and minimal external component count.

FAQ

What is the maximum input voltage the TLV7081YKAR can tolerate when V+ is unpowered?

The TLV7081YKAR supports an input voltage range of 0 V to 5.6 V independent of V+, meaning it can safely accept up to 5.6 V on the IN pin even when V+ = 0 V. This fault-tolerant behavior is enabled by internal protection circuitry and allows continuous monitoring of external voltage sources during system power-down - a key capability confirmed in the datasheet's Section 7.4.1 and Absolute Maximum Ratings table.

Does the TLV7081YKAR require external hysteresis components for stable operation?

No, the TLV7081YKAR integrates 10 mV of internal hysteresis, eliminating the need for external feedback resistors. This is explicitly specified in the Electrical Characteristics table (VHYS = 10 mV) and described in Section 7.4.2 as a built-in feature to reduce sensitivity to noise during slow or noisy threshold crossings - making it suitable for direct use in battery monitor circuits without additional components.

Can the TLV7081YKAR output interface directly with a 1.8 V microcontroller GPIO?

Yes, the TLV7081YKAR features an open-drain output that can be pulled up to any voltage ≤5.5 V. By connecting a pull-up resistor to a 1.8 V rail, the output logic-high level becomes 1.8 V - fully compatible with 1.8 V CMOS inputs. This level-shifting capability is documented in the Features list, Pin Functions table, and Application section Figure 21, confirming direct interoperability without additional logic buffers.

What is the thermal performance of the TLV7081YKAR in its YKA package?

The TLV7081YKAR in the 0.7 mm × 0.7 mm DSBGA (YKA) package has a junction-to-ambient thermal resistance (RθJA) of 207°C/W, junction-to-board (RθJB) of 73.2°C/W, and junction-to-case (top) of 1.8°C/W - per Section 6.4. These values confirm suitability for thermally constrained environments, especially when mounted on standard FR-4 with adequate copper pour, and support reliable operation across the full –40°C to +125°C ambient range.

How does the power-on-reset (POR) function affect TLV7081YKAR output behavior during startup?

The TLV7081YKAR incorporates a POR circuit that holds the open-drain output in high-impedance (logically high) state while supply voltage ramps between ~1 V and the minimum operating voltage (1.7 V). Once VS ≥ 1.7 V, the comparator begins normal operation - ensuring no false triggering or undefined states during power-up. This behavior is defined in Section 7.4 and guarantees deterministic initialization in battery-powered systems.