TLV4051R2DBVR

Comparators Overview

The TLV4051R2DBVR is a low-power, high-accuracy analog comparator from Texas Instruments featuring an integrated precision reference. It operates within a supply voltage range of 1.6 V to 5.5 V and consumes a quiescent current of 2 µA. The device provides a factory-trimmed 0.2 V switching threshold with 0.5% accuracy at 25°C. It utilizes an inverting input configuration paired with a push-pull output stage. The component exhibits a propagation delay of 360 ns and includes built-in hysteresis for noise immunity. It supports a wide operating temperature range from –40°C to +125°C and is available in SOT-23 (5-pin) packaging.

Comparators Feature Summary

• Integrates a factory-trimmed 0.2 V precision reference with defined hysteresis for stable operation in noisy environments.
• Features an inverting input configuration combined with a push-pull output stage for direct digital interfacing.
• Includes a Power-on-Reset (POR) circuit that ensures known startup conditions by holding the output low during power ramp-up.

Comparators Applications

• Lithium ion battery monitoring
• Battery management and protection systems
• Current and voltage sensing circuits
• Point of load regulators
• DC/DC and AC/DC power supplies

Comparators Procurement Notes

Verify the specific ordering suffix DBVR corresponds to the SOT-23 package and tape-and-reel delivery format as defined in the manufacturer's orderable addendum. Confirm that the R2 suffix correctly specifies the 0.2 V reference voltage and the 51 suffix denotes the inverting/push-pull topology. Ensure compatibility with the required 1.6 V to 5.5 V supply rails and check for any updated documentation revisions prior to final design implementation.

Comparators Selection Notes

Select this component when space-constrained designs require a comparator with a fixed low-voltage threshold without external resistor dividers. The push-pull output eliminates the need for external pull-up resistors, simplifying board layout. It is suitable for applications demanding low quiescent current and precise undervoltage or overvoltage detection where fast response times are secondary to accuracy and power efficiency.

Comparators Part Context

This part belongs to the TLV40x1 family of small-size, low-power comparators designed for portable and battery-powered electronics. The family offers various configurations including non-inverting and inverting inputs with either open-drain or push-pull outputs. Other members provide different reference voltages such as 0.5 V, 1.2 V, or a fixed 3.2 V threshold, allowing designers to choose the optimal device for specific voltage monitoring requirements.

Comparators Replacement Considerations

TLV4051R2DCKR: Same electrical specifications and functionality but packaged in a DSBGA (4-bump) form factor instead of SOT-23. Verify footprint compatibility if substituting due to the significant difference in physical dimensions and pinout arrangement.

Comparators FAQ

How does the TLV4051R2 handle power-on states?

The device incorporates a Power-on-Reset (POR) circuit that holds the output low until the supply voltage exceeds the POR threshold, ensuring a known startup condition before normal comparator operation begins.

What is the function of the internal hysteresis?

The integrated hysteresis prevents false triggering caused by slow-moving input signals or supply-rail noise, ensuring clean digital output transitions without requiring external components.