Texas Instruments TLV4051R2DBVR

Overview

TLV4051R2DBVR from Texas Instruments is a precision, low-power, inverting-input comparator with push-pull output and factory-trimmed 0.2 V internal reference. It operates from 1.6 V to 5.5 V, draws only 2 µA quiescent current, delivers 360 ns propagation delay, and supports operation from –40°C to +125°C - ideal for lithium-ion battery voltage monitoring and overvoltage protection in space-constrained portable electronics.

For engineers reviewing the TLV4051R2DBVR datasheet, TLV4051R2DBVR pinout, TLV4051R2DBVR application, or TLV4051R2DBVR equivalent, key selection considerations include its inverting input topology, 0.2 V precision threshold (±0.5% at 25°C), push-pull output drive capability, DSBGA-4 package footprint (0.73 mm × 0.73 mm), and guaranteed startup behavior via integrated power-on reset.

Technical Context

The TLV4051R2DBVR implements a rail-to-rail input stage comparing an external signal at its inverting input against a factory-trimmed 0.2 V internal reference. Its dual-threshold architecture provides 20 mV of precision hysteresis (VIT+ = 0.200 V, VIT− = 0.180 V at 25°C) to reject noise and prevent false triggering on slow-moving or glitchy inputs.

It features a dedicated Power-On Reset (POR) circuit that holds the push-pull output low during power ramp-up until supply reaches ≥1.45 V, ensuring deterministic startup. Output swing is specified to within 100 mV of rails at 200 µA load across full temperature range, enabling direct interfacing with 1.8 V–5 V logic systems.

Key Specifications

Pinout & Package

TLV4051R2DBVR is packaged in a 0.73 mm × 0.73 mm, 4-bump DSBGA (YKA) package 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 TLV4051R5DBVR and TLV4031R2DBVR, TLV4051R2DBVR uniquely combines 0.2 V precision threshold, inverting input, and push-pull output in the smallest DSBGA-4 package - making it optimal for ultra-low-power, space-constrained battery voltage supervision where active high/low drive is needed without external passives.

Availability

TLV4051R2DBVR 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 and long-term production support.

Supply support for TLV4051R2DBVR 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 signal chains and low-power design.

The TLV40x1 family was engineered specifically for compact, battery-operated systems needing reliable, low-quiescent-current voltage monitoring - emphasizing factory-trimmed references, deterministic startup, and minimal external components.

FAQ

What is the exact input threshold voltage of TLV4051R2DBVR and how stable is it over temperature?

The TLV4051R2DBVR has a factory-trimmed positive-going input threshold (VIT+) of 0.200 V ±0.5% at 25°C and ±1% over –40°C to +125°C. Its negative-going threshold (VIT−) is 0.180 V at 25°C, yielding 20 mV of precision hysteresis. These values are guaranteed in production test and do not require external calibration - critical for consistent battery cutoff behavior across environmental conditions.

Does TLV4051R2DBVR require external components to operate, and what is its minimum supply voltage?

No, TLV4051R2DBVR requires no external resistors, capacitors, or references to function - its 0.2 V internal reference, hysteresis, and power-on reset are fully integrated. It operates down to 1.6 V supply voltage, enabling use with partially discharged single-cell Li-ion batteries (≥2.5 V after divider scaling) and 1.8 V logic domains.

How does the inverting input configuration of TLV4051R2DBVR simplify high-side voltage monitoring?

With its inverting input, TLV4051R2DBVR asserts low when the input voltage exceeds the 0.2 V threshold. To monitor a high-side rail (e.g., 3.3 V), connect a resistor divider from the rail to GND, feeding the midpoint to IN. When rail voltage rises above the trip point, IN exceeds 0.2 V and OUT goes low - directly enabling simple, robust overvoltage detection without op-amp inversion stages.

What is the purpose and behavior of the Power-On Reset (POR) circuit in TLV4051R2DBVR?

The POR circuit in TLV4051R2DBVR forces the push-pull output low whenever supply voltage (V+) is below 1.45 V. This ensures a known, safe state during power ramp-up or brownout - preventing spurious logic transitions in connected microcontrollers or protection FETs. Once V+ ≥ 1.45 V, normal comparator operation resumes immediately.

Can TLV4051R2DBVR drive logic inputs directly, and what is its output voltage swing specification?

Yes, TLV4051R2DBVR's push-pull output can drive 1.8 V, 3.3 V, or 5 V CMOS logic inputs directly. At VS = 5 V and sink/source current of 200 µA, output swing is within 100 mV of the rails (V− and V+). Even at 3 mA load and full temperature range, VOL ≤ 400 mV and VOH ≥ (V+ − 400 mV), ensuring robust noise margins.