Texas Instruments TLV4041R5YKAR

Overview

TLV4041R5YKAR from Texas Instruments is a precision, low-power comparator with integrated 0.5 V reference, non-inverting input configuration, and push-pull output. It operates from 1.6 V to 5.5 V, draws only 2 µA quiescent current, delivers 360 ns propagation delay, and supports –40°C to +125°C operation - ideal for lithium-ion battery voltage monitoring in portable power management systems.

For engineers reviewing the TLV4041R5YKAR datasheet, TLV4041R5YKAR pinout, TLV4041R5YKAR application, or TLV4041R5YKAR equivalent, key selection considerations include its factory-trimmed 0.5 V threshold (±0.5% at 25°C, ±1% over temperature), rail-to-rail input stage, precision hysteresis (20 mV), known startup behavior via POR circuit, and dual-package availability (DSBGA YKA / SOT-23).

Technical Context

The TLV4041R5YKAR implements a rail-to-rail input comparator core with internal 0.5 V precision reference, where V_IT+ = 0.495–0.505 V and V_IT− = 0.4752–0.4848 V at 25°C, and hysteresis fixed at 20 mV. Its push-pull output drives high (≤100 mV below V+) and low (≤100 mV above V−) under 200 µA load across full temperature range.

Power-on reset activates below 1.45 V supply, forcing output low during ramp-up; operation transitions to input-controlled state once V_S ≥ 1.6 V. Input bias current is ≤10 pA, enabling high-impedance sensing without loading source circuits.

Key Specifications

Pinout & Package

TLV4041R5YKAR is available in two packages: ultra-compact 0.73 mm × 0.73 mm DSBGA (YKA, 4-bump) and industry-standard SOT-23 (DBV, 5-pin). The YKA package uses all four bumps; the SOT-23 includes a no-connect (NC) pin (Pin 3) for mechanical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4041R5DBVR and TLV4021R5YKAR, TLV4041R5YKAR uniquely combines ultra-small DSBGA size, push-pull drive, and 0.5 V precision reference - optimizing for space-constrained, low-power battery systems needing immediate logic-level output assertion.

Availability

TLV4041R5YKAR is available at Aetrix Electronics and suitable for lithium-ion battery monitoring, point-of-load regulator protection, and industrial sensor interface applications requiring stable component supply across automotive, medical, and industrial production cycles.

Supply support for TLV4041R5YKAR 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 for industrial, automotive, and personal electronics markets.

The TLV40x1 product line targets ultra-low-power, precision voltage detection in space- and energy-constrained systems - specifically designed for battery management, power sequencing, and self-diagnostic functions where reliability and minimal footprint are critical.

FAQ

What is the exact reference voltage and tolerance of TLV4041R5YKAR?

The TLV4041R5YKAR features a factory-trimmed internal reference voltage of 0.5 V with ±0.5% accuracy at 25°C and ±1% over the full –40°C to +125°C operating temperature range. This is confirmed in Section 6.5 Electrical Characteristics of the official TI datasheet (SNVSB04C), where V_IT+ is specified as 0.495–0.505 V at 25°C and 0.49–0.51 V across temperature. TLV4041R5YKAR uses this reference directly for non-inverting threshold comparison.

Does TLV4041R5YKAR require external components to operate as a voltage detector?

No, TLV4041R5YKAR requires no external components to function as a 0.5 V threshold detector. Its internal precision reference, rail-to-rail input, and push-pull output enable direct connection of the IN pin to a voltage divider (for scaled thresholds) or to a low-voltage source (e.g., shunt regulator output). Only V+ and V− supply connections are mandatory; no pull-up resistors, compensation caps, or reference buffers are needed for basic operation.

How does the power-on reset (POR) circuit affect TLV4041R5YKAR output behavior during startup?

The TLV4041R5YKAR POR circuit holds the OUT pin low whenever supply voltage V_S is below 1.45 V. Once V_S rises to ≥1.6 V (minimum recommended operating voltage), the output transitions to normal comparator operation - asserting high when IN > 0.5 V and low when IN < 0.5 V. This ensures deterministic startup without glitches, which is critical in power sequencing applications. TLV4041R5YKAR's POR behavior is explicitly documented in Section 8.4.1 and Figure 8-3 of the datasheet.

Can TLV4041R5YKAR be used with supply voltages below 1.8 V?

Yes, TLV4041R5YKAR is fully specified down to 1.6 V supply voltage per Section 6.3 Recommended Operating Conditions. Electrical characteristics including 0.5 V reference accuracy, 2 µA quiescent current, and 360 ns propagation delay are guaranteed across 1.6–5.5 V. This makes TLV4041R5YKAR suitable for single-cell alkaline (1.5 V nominal) or NiMH (1.2 V) systems when initial voltage exceeds 1.6 V, and for Li-ion cells down to ~2.7 V with appropriate scaling.

What is the maximum sink/source current capability of TLV4041R5YKAR's push-pull output?

TLV4041R5YKAR's push-pull output can sink up to 50 mA and source up to 50 mA (per Section 6.5 Electrical Characteristics, ISC parameter). Under typical loads (≤3 mA), it guarantees VOL ≤ 100 mV above V− and VOH ≤ 100 mV below V+ across –40°C to +125°C. This allows direct driving of LED indicators, MOSFET gates, or logic inputs without buffer stages - a key advantage over open-drain comparators like TLV4021R5YKAR.