Texas Instruments TLV4031R2YKAR

Overview

TLV4031R2YKAR from Texas Instruments is an ultra-small, low-power, inverting-input comparator with a factory-trimmed 0.2 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 TLV4031R2YKAR datasheet, TLV4031R2YKAR pinout, TLV4031R2YKAR application, or TLV4031R2YKAR equivalent, key selection considerations include its inverting input topology, 0.2 V threshold accuracy (±0.5% at 25°C), DSBGA-4 package footprint (0.73 mm × 0.73 mm), and operation across –40°C to +125°C industrial temperature range.

Technical Context

The TLV4031R2YKAR implements a rail-to-rail input stage with factory-trimmed hysteresis (20 mV) and dual switching thresholds: V_IT+ = 0.200 V (±0.003 V at 25°C) and V_IT− = 0.180 V (±0.003 V at 25°C). Its internal 0.2 V reference eliminates external resistor dividers for low-voltage detection.

It features a Power-on Reset (POR) circuit that forces the open-drain output into high-impedance state until supply voltage (V_S) reaches ≥1.45 V, ensuring known startup behavior. Input bias current is 10 pA over full temperature range, enabling high-impedance sensing without loading.

Key Specifications

Pinout & Package

TLV4031R2YKAR is packaged in a 0.73 mm × 0.73 mm, 4-bump DSBGA (YKA) package-optimized for ultra-dense PCB layouts in wearables and portable medical devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4031R1YKAR and TLV4021R2YKAR, TLV4031R2YKAR uniquely combines inverting input topology with 0.2 V precision reference-enabling direct, low-component-count implementation of sub-1 V undervoltage detection with active-low fault signaling.

Availability

TLV4031R2YKAR is available at Aetrix Electronics and suitable for lithium-ion battery protection, point-of-load undervoltage detection, and portable medical sensor self-diagnostics requiring stable component supply across automotive, industrial, and consumer production programs.

Supply support for TLV4031R2YKAR 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 decades of expertise in precision analog ICs, low-power design, and automotive-grade qualification.

The TLV40x1 family-including TLV4031R2YKAR-is engineered for ultra-low-power voltage monitoring in space-constrained, harsh-environment applications such as battery management, power sequencing, and system health diagnostics.

FAQ

What is the input configuration of the TLV4031R2YKAR?

The TLV4031R2YKAR features an inverting input configuration: its output asserts low when the voltage at the IN pin exceeds the internal 0.2 V reference threshold (V_IT+ = 0.200 V), and enters high-impedance state when IN falls below the hysteresis-adjusted lower threshold (V_IT− = 0.180 V). This behavior is confirmed in Table 8-1 and Figure 8-1 of the official datasheet for TLV4031R2YKAR.

Does the TLV4031R2YKAR require external components to set its threshold?

No. The TLV4031R2YKAR integrates a factory-trimmed 0.2 V precision reference, eliminating the need for external resistor dividers to establish its switching threshold. This is explicitly stated in the "Description" section and verified in the "TLV40x1 Truth Table" (Table 3-1), where TLV4031R2 denotes the 0.2 V inverting open-drain variant of TLV4031R2YKAR.

What is the guaranteed operating temperature range for TLV4031R2YKAR?

The TLV4031R2YKAR is specified to operate across –40°C to +125°C ambient temperature, as defined in Section 6.3 ("Recommended Operating Conditions") of the datasheet. This range is validated for all electrical parameters including reference accuracy (±1% over temperature), propagation delay, and quiescent current.

How does the Power-on Reset (POR) function in TLV4031R2YKAR?

The TLV4031R2YKAR incorporates a POR circuit that holds the open-drain output in high-impedance state until the supply voltage (V_S) reaches ≥1.45 V. This ensures predictable startup behavior-critical for avoiding false alarms during power ramp-up. The POR behavior is documented in Section 8.4.1 and illustrated in Figure 8-1 for TLV4031R2YKAR.

Is TLV4031R2YKAR pin-compatible with other TLV40x1 variants in the YKA package?

Yes. All TLV40x1 devices in the YKA (DSBGA-4) package-including TLV4031R2YKAR, TLV4021R2YKAR, TLV4041R2YKAR, and TLV4051R2YKAR-share identical pinout (A1=OUT, B1=V+, B2=V−, A2=IN) and mechanical footprint. Pin compatibility is confirmed in Table 5-1 ("DSBGA Package Pin Functions") and the "Device Information" table of the datasheet.