Texas Instruments TLV4031R1YKAR

Overview

TLV4031R1YKAR from Texas Instruments is an ultra-small, low-power, inverting-input comparator with a factory-trimmed 1.2 V precision reference, open-drain output, 2 µA quiescent current, and 360 ns propagation delay-designed for voltage monitoring in space-constrained, battery-powered systems such as lithium-ion protection circuits.

For engineers reviewing the TLV4031R1YKAR datasheet, TLV4031R1YKAR pinout, TLV4031R1YKAR application, or TLV4031R1YKAR equivalent, this page delivers verified package mapping (DSBGA-4), input polarity confirmation (inverting), reference accuracy (±0.5% at 25°C), hysteresis (20 mV), and thermal performance (R_θJA = 205.5°C/W) to support rapid design-in and reliability validation.

Technical Context

The TLV4031R1YKAR implements a rail-to-rail input stage with factory-trimmed hysteresis (20 mV) and dual thresholding (V_IT+ = 1.200 V, V_IT− = 1.180 V at 25°C), enabling robust noise immunity in noisy power rails. Its inverting configuration asserts low when the input exceeds the 1.2 V reference, supporting undervoltage detection via external resistor dividers.

It integrates a Power-On Reset (POR) circuit that forces output high-impedance until supply reaches 1.45 V, ensuring known startup behavior. The DSBGA-4 package (0.73 mm × 0.73 mm) supports high-density PCB layouts while maintaining thermal resistance of 205.5°C/W (junction-to-ambient).

Key Specifications

Pinout & Package

TLV4031R1YKAR is packaged in a 0.73 mm × 0.73 mm, 4-bump DSBGA (YKA) package with bottom-side solder balls. This ultra-compact footprint targets wearables, hearing aids, and IoT sensors where board area is constrained.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar comparator-with-reference applications.

Compared with TLV4031R1DBVR, TLV4031R1YKAR saves >90% board area and suits ultra-dense designs; compared with TLV4041R1YKAR, it provides open-drain flexibility for bus arbitration and level translation, critical in multi-rail systems.

Availability

TLV4031R1YKAR is available at Aetrix Electronics and suitable for lithium-ion battery protection, point-of-load voltage monitoring, and portable medical sensor self-diagnostics requiring stable component supply across automotive, industrial, and consumer production programs.

Supply support for TLV4031R1YKAR 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 leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs and low-power design.

The TLV40x1 family was engineered for space-constrained, battery-sensitive applications demanding integrated precision references, sub-µA quiescent current, and guaranteed startup behavior-targeting portable electronics, energy harvesting, and automotive subsystems.

FAQ

What is the input configuration of TLV4031R1YKAR?

The TLV4031R1YKAR features an inverting input configuration: the output goes low when the voltage at the IN pin exceeds the internal 1.2 V reference. This makes it ideal for overvoltage detection in battery protection circuits where the monitored rail connects directly to IN. The inverting topology eliminates the need for external inversion logic in such applications.

Does TLV4031R1YKAR require an external pull-up resistor?

Yes, TLV4031R1YKAR has an open-drain output and requires an external pull-up resistor to establish a logic-high state. The value depends on speed and drive strength needs-typically 4.99 kΩ for 360 ns propagation delay with 15 pF load. No pull-up is needed if interfacing only with open-drain or OC inputs, but a pull-up is mandatory for driving standard CMOS logic.

What is the guaranteed reference accuracy over temperature for TLV4031R1YKAR?

The TLV4031R1YKAR reference is specified at ±1% over the full operating temperature range (–40°C to +125°C). At 25°C, accuracy is tighter: ±0.5%. This is confirmed in Table 6-5 of the datasheet, where V_IT+ min/max spans 1.188 V to 1.212 V across temperature-critical for UVLO/OLVO margining in automotive and industrial systems.

Can TLV4031R1YKAR operate from a 1.8 V supply?

Yes, TLV4031R1YKAR operates from 1.6 V to 5.5 V, including 1.8 V. At 1.8 V, quiescent current remains 2 µA typical, and propagation delay increases only marginally (to ~400 ns). The 1.2 V reference remains fully functional, enabling accurate threshold detection even at minimum supply-essential for single-cell Li-ion and energy-harvesting applications.

How does the Power-On Reset (POR) function in TLV4031R1YKAR?

The TLV4031R1YKAR POR circuit holds the output in high-impedance until the supply voltage reaches 1.45 V. Below this threshold, the output is undefined and must not be relied upon. Once V_S ≥ 1.45 V, the comparator begins normal operation, reflecting the IN pin state. This ensures deterministic startup without false triggering during power ramp-up-verified in Figure 8-1 of the datasheet.