Texas Instruments TLV6703DDCT

Overview

TLV6703DDCT from Texas Instruments is a micropower, 18-V single-channel non-inverting comparator with integrated 400-mV reference, open-drain output rated to 18 V, ±0.5% threshold accuracy at 25°C, and 5.5 µA typical quiescent current - used for precision undervoltage monitoring in battery-powered systems.

For engineers reviewing the TLV6703DDCT datasheet, TLV6703DDCT pinout, TLV6703DDCT application, or TLV6703DDCT equivalent, key selection considerations include its adjustable detection threshold (down to 400 mV), built-in 5.5-mV hysteresis, –40°C to +125°C operating range, SOT-23-6 package, and compatibility with supply rails up to 18 V independent of VDD.

Technical Context

The TLV6703DDCT implements a high-accuracy comparator core with internal 400-mV reference and trimmed rising threshold (VIT+ = 400 mV ±0.5% at 25°C). Its input stage accepts SENSE voltages from 0 V to 6.5 V regardless of VDD, enabling monitoring of rails higher than the supply voltage via external resistor dividers.

It features open-drain output with 40-mA sink capability and 18-V absolute maximum rating, supporting pullup to any rail ≤18 V. Internal hysteresis (5.5 mV typ) suppresses noise-induced false triggering, and undervoltage lockout (UVLO = 1.3–1.7 V) ensures predictable behavior during power ramp-up.

Key Specifications

Pinout & Package

TLV6703DDCT is housed in a thin SOT-23-6 package (2.90 mm × 1.60 mm body size) with lead-free NiPdAu plating and Moisture Sensitivity Level 2 (260°C, 1 year).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-monitoring applications.

Compared with TLV6700DDCT and TPS3839G33DBVR, the TLV6703DDCT uniquely combines adjustable 400-mV threshold, 18-V output tolerance, and micropower operation - making it the only option among the three capable of monitoring arbitrary high-voltage rails while maintaining precision and low standby current.

Availability

TLV6703DDCT is available at Aetrix Electronics and suitable for battery-powered medical devices, industrial sensor nodes, and portable consumer electronics requiring stable component supply and long-term lifecycle support.

Supply support for TLV6703DDCT 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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The TLV6703DDCT belongs to TI's TLV67xx integrated comparator family, designed specifically for high-accuracy, low-power voltage monitoring in space-constrained and battery-sensitive applications across industrial, automotive, and portable markets.

FAQ

What is the function of the SENSE pin on the TLV6703DDCT?

The SENSE pin on the TLV6703DDCT is the input node for the monitored voltage, which is compared against the internal 400-mV reference. When the SENSE voltage drops below VIT− (e.g., 394.5 mV at 25°C), the TLV6703DDCT drives OUT low; it returns to high-impedance when SENSE rises above VIT+ (e.g., 400 mV). The pin accepts 0–6.5 V regardless of VDD, enabling flexible rail monitoring.

Can the TLV6703DDCT output be pulled up to a voltage higher than its VDD supply?

Yes, the TLV6703DDCT output is rated for 18 V and can be pulled up to any voltage ≤18 V, independent of VDD. For example, with VDD = 3.3 V, the OUT pin may be pulled up to 12 V to interface directly with a microcontroller's 12-V reset input. This eliminates level-shifting components and simplifies system design.

What is the minimum recommended pullup resistor value for the TLV6703DDCT OUT pin?

The minimum pullup resistor value for the TLV6703DDCT OUT pin depends on the desired VOL and pullup voltage. With VDD = 5 V and VPULLUP = 5 V, a 10-kΩ resistor yields VOL ≈ 250 mV at 5 mA sink. To maintain VOL ≤ 400 mV while sinking 40 mA, RPULLUP must be ≥ (VPULLUP − 0.4 V)/0.04 A - e.g., ≥24 kΩ for VPULLUP = 10 V. Always verify using Equation 2 from the TLV6703DDCT datasheet.

Does the TLV6703DDCT require an external reference or trimming components?

No, the TLV6703DDCT integrates a factory-trimmed 400-mV reference with ±0.5% accuracy at 25°C and ±1.0% over –40°C to +125°C. No external reference, calibration resistors, or trimming components are needed - the threshold is set solely by the external resistor divider connected to the SENSE pin, simplifying design and reducing cost.

How does the TLV6703DDCT handle power-supply ramp-up and brownout conditions?

The TLV6703DDCT incorporates undervoltage lockout (UVLO = 1.3–1.7 V) and power-on reset (POR = 0.8 V) circuitry. During ramp-up, OUT remains undefined until VDD exceeds UVLO for ≥150 µs. Below UVLO but above POR, OUT is forced low regardless of SENSE. Below POR, OUT enters high-impedance - ensuring deterministic behavior during power transitions in the TLV6703DDCT.