Texas Instruments TLV4011QDCKRQ1

Overview

TLV4011QDCKRQ1 from Texas Instruments is an automotive-grade, low-power comparator with integrated 1.226 V precision reference, open-drain RESET output, ±1.5% threshold accuracy, and 3 μA supply current - used for undervoltage detection in battery management and telematics systems.

For engineers reviewing the TLV4011QDCKRQ1 datasheet, TLV4011QDCKRQ1 pinout, TLV4011QDCKRQ1 application, or TLV4011QDCKRQ1 equivalent, key selection considerations include adjustable threshold down to 1.226 V, –40°C to 125°C operation, SC-70 (5-pin) package, AEC-Q100 Grade 1 qualification, and transient-immune SENSE input behavior.

Technical Context

The TLV4011QDCKRQ1 implements a non-inverting comparator architecture with factory-trimmed 1.226 V reference and 15 mV hysteresis, enabling stable reset assertion/deassertion without external components. Its SENSE input monitors system voltage via resistor divider, asserting active-low RESET when input falls below VIT.

Designed for harsh automotive environments, it rejects short negative transients on SENSE through built-in immunity circuitry and operates across 1.3 V–6 V supply range. Power-on reset triggers at VDD > 0.8 V, and open-drain output supports level-shifting to 3.3 V microcontrollers.

Key Specifications

Pinout & Package

TLV4011QDCKRQ1 is housed in a 5-pin SC-70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained automotive PCBs and compatible with standard SMT reflow profiles (MSL Level-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4011QDCKRQ1, TLV809E33DBVR offers lower quiescent current but no adjustable threshold or SENSE pin flexibility, while TPS3803-01QDBVRQ1 provides dual thresholds at higher power cost and reduced noise immunity - making TLV4011QDCKRQ1 optimal for precision, low-power, single-rail automotive supervision.

Availability

TLV4011QDCKRQ1 is available at Aetrix Electronics and suitable for emergency call (eCall), telematics control unit (TCU), and battery management system (BMS) applications requiring stable component supply across automotive production lifecycles.

Supply support for TLV4011QDCKRQ1 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 deep expertise in automotive electronics, power management, and precision analog design.

The TLV4011QDCKRQ1 belongs to TI's automotive-qualified voltage supervisor product line, engineered specifically for reliable undervoltage detection and reset generation in harsh-temperature, high-reliability vehicle subsystems.

FAQ

What is the minimum supply voltage required for TLV4011QDCKRQ1 to assert power-on reset?

The TLV4011QDCKRQ1 asserts power-on reset (RESET low) when VDD rises above 0.8 V, as specified in the Electrical Characteristics table under VPOR. This ensures reliable initialization during battery cold-cranking or low-voltage startup sequences. The device remains functional down to 1.3 V supply, but the POR function activates precisely at 0.8 V with 50 μA sink capability. TLV4011QDCKRQ1 maintains this behavior across its full –40°C to 125°C operating range.

Can TLV4011QDCKRQ1 monitor a 5 V rail directly without a resistor divider?

No - TLV4011QDCKRQ1's SENSE input is referenced to its internal 1.226 V threshold and cannot tolerate direct 5 V application. To monitor a 5 V rail, a resistor divider (e.g., R1 = 3.07 MΩ, R2 = 1 MΩ) must scale the input so that 5 V produces exactly 1.226 V at SENSE. This preserves ±1.5% accuracy and leverages the device's hysteresis. Direct 5 V connection violates absolute maximum ratings (VI max = VDD + 0.3 V) and risks permanent damage to TLV4011QDCKRQ1.

Does TLV4011QDCKRQ1 require an external hysteresis network?

No - TLV4011QDCKRQ1 integrates 15 mV of factory-trimmed hysteresis, eliminating need for external positive feedback. This internal hysteresis ensures clean RESET transitions during slow-moving or noisy inputs, such as battery discharge curves or alternator ripple. External hysteresis is only recommended if system-level noise exceeds 15 mV peak-to-peak - in which case TLV4011QDCKRQ1's SENSE pin supports standard RC feedback configurations per TI Application Note SNVA865.

What is the maximum sink current capability of the TLV4011QDCKRQ1 RESET output?

The TLV4011QDCKRQ1 RESET output supports up to 5 mA sink current (IOL) continuously, as defined in Absolute Maximum Ratings. At 3.3 V pull-up and 2 mA load, typical VOL is ≤0.3 V - ensuring solid logic-low recognition by 3.3 V CMOS inputs. For higher-current loads, derating per thermal metrics (RθJA = 246.6°C/W) applies; sustained 5 mA operation requires board-level thermal management. TLV4011QDCKRQ1's open-drain architecture maintains compatibility with mixed-voltage systems.

How does TLV4011QDCKRQ1 reject short transients on the SENSE pin?

TLV4011QDCKRQ1 rejects short negative transients via internal filtering and threshold overdrive immunity, characterized in Figure 7-3: transients shorter than 5.5 μs or with overdrive <100 mV are ignored. This behavior stems from proprietary input stage design that filters sub-microsecond spikes without external capacitors. In practice, this prevents false resets from load-dump coupling or CAN bus noise - a key differentiator versus generic comparators. TLV4011QDCKRQ1's transient rejection is validated across –40°C to 125°C and forms part of its AEC-Q100 qualification.