Texas Instruments TLV4041R1YKAR

Overview

TLV4041R1YKAR from Texas Instruments is a precision, low-power comparator with integrated 1.2 V reference, non-inverting input configuration, and push-pull output. It operates from 1.6 V to 5.5 V, consumes only 2 µA quiescent current, delivers 360 ns propagation delay, and supports –40°C to +125°C ambient operation - ideal for lithium-ion battery voltage monitoring in portable power management systems.

For engineers reviewing the TLV4041R1YKAR datasheet, TLV4041R1YKAR pinout, TLV4041R1YKAR application, or TLV4041R1YKAR equivalent, key selection considerations include its factory-trimmed 1.2 V threshold (±0.5% at 25°C, ±1% over temperature), rail-to-rail input stage, known startup behavior via POR circuit, and compatibility with space-constrained DSBGA-4 packaging.

Technical Context

The TLV4041R1YKAR implements a precision comparator core with dual trimmed thresholds (V_IT+ = 1.200 V, V_IT− = 1.180 V at 25°C) and 20 mV hysteresis, enabling reliable undervoltage/overvoltage detection without external components. Its rail-to-rail input stage accepts signals from V₋ to V₊, and the push-pull output drives high/low actively without pull-up resistors.

Power-on reset (POR) asserts output low during supply ramp-up until V_S ≥ 1.45 V, ensuring deterministic startup. The device uses a single internal reference - no external resistor divider required - and maintains stable switching performance across 1.6–5.5 V supply and full industrial temperature range.

Key Specifications

Pinout & Package

The TLV4041R1YKAR is packaged in a 0.73 mm × 0.73 mm, 4-bump DSBGA (YKA) package - one of the smallest comparator footprints available, optimized for ultra-compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4041R1DBVR, the TLV4041R1YKAR offers superior board-area efficiency and thermal resistance in ultra-compact designs, while TLV4021R1YKAR provides open-drain flexibility at the cost of added external components and reduced noise immunity in high-speed digital interfaces.

Availability

TLV4041R1YKAR is available at Aetrix Electronics and suitable for lithium-ion battery protection, point-of-load voltage monitoring, and self-diagnostic power sequencing requiring stable component supply across automotive, industrial, and portable electronics programs.

Supply support for TLV4041R1YKAR 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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain and power management solutions.

The TLV40x1 family was designed specifically for space- and power-constrained voltage monitoring applications - delivering factory-trimmed references, low quiescent current, and robust noise immunity in sub-1-mm² packages.

FAQ

What is the exact reference voltage and accuracy of the TLV4041R1YKAR?

The TLV4041R1YKAR features a factory-trimmed 1.2 V internal reference with ±0.5% accuracy at 25°C and ±1% accuracy over the full –40°C to +125°C operating temperature range. This specification is guaranteed per datasheet Table 6-5 and applies directly to the TLV4041R1YKAR variant - no external calibration or adjustment is required for precision threshold detection.

Does the TLV4041R1YKAR require external components to function as a voltage monitor?

No, the TLV4041R1YKAR operates as a complete voltage monitor with no external components required for basic threshold detection. Its integrated 1.2 V reference, rail-to-rail input, and push-pull output allow direct connection to a voltage divider (for scaling inputs above 1.2 V) and to digital logic - eliminating external reference ICs, pull-up resistors, or filtering networks in most implementations.

How does the power-on reset (POR) circuit behave in the TLV4041R1YKAR?

The TLV4041R1YKAR's POR circuit holds the output low (≈V−) whenever the supply voltage V_S is below 1.45 V. Once V_S rises to or exceeds 1.45 V, the comparator exits POR mode after ~500 µs and begins normal operation - reflecting the IN-to-reference comparison. This ensures deterministic startup in battery-powered systems where supply ramps slowly.

Can the TLV4041R1YKAR be used with input voltages higher than its 1.2 V reference?

Yes - the TLV4041R1YKAR's rail-to-rail input stage accepts voltages from V₋ to V₊. To monitor voltages above 1.2 V (e.g., 3.3 V or 5 V rails), use a precision resistor divider to scale the input down to ≤1.2 V at the IN pin. The device's 10 pA input bias current minimizes divider error, supporting high-impedance sensing without loading effects.

What is the maximum recommended load for the TLV4041R1YKAR's push-pull output?

The TLV4041R1YKAR push-pull output is specified to sink or source up to 3 mA while maintaining VOL ≤ 400 mV and VOH ≤ 400 mV (vs. V− and V+, respectively) across –40°C to +125°C. For reliable logic-level interfacing, keep capacitive loads ≤50 pF and resistive loads ≥1 kΩ - consistent with standard CMOS/TTL fan-out requirements.