Texas Instruments TLV4011DCKR

Overview

TLV4011DCKR from Texas Instruments is a precision voltage-monitoring comparator with integrated 1.226 V reference, open-drain RESET output, ±1.5% threshold accuracy, 3 μA supply current, and operation from 1.3 V to 6 V supply. It asserts active-low RESET when SENSE voltage falls below V_IT, enabling reliable undervoltage detection in battery-powered systems.

For engineers reviewing the TLV4011DCKR datasheet, TLV4011DCKR pinout, TLV4011DCKR application, or TLV4011DCKR equivalent, key selection considerations include its factory-trimmed 1.226 V threshold, 15 mV hysteresis, SC-70 (5-pin) package, –40°C to 85°C temperature range, and immunity to short negative transients on the SENSE input.

Technical Context

The TLV4011DCKR implements a precision comparator architecture with an internal bandgap reference and built-in hysteresis (15 mV typ), eliminating external components for stable threshold detection. Its SENSE input monitors system voltages down to 1.226 V via resistor divider networks, while the open-drain RESET output interfaces directly with microcontroller reset inputs requiring active-low assertion.

During power-up, RESET is asserted low until V_DD exceeds 0.8 V; thereafter, it remains low while SENSE stays below V_IT, and de-asserts only when SENSE rises above V_IT + V_hys. The device rejects brief glitches and negative transients on SENSE due to overdrive-dependent pulse-duration immunity, ensuring robust operation in electrically noisy environments like cordless tools or circuit breakers.

Key Specifications

Pinout & Package

TLV4011DCKR is housed in a 5-pin SC-70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4011DCKR, TLV4021DCKR adds channel count at cost of higher total current and larger layout footprint, while TPS3803-01DBVR trades adjustability and open-drain flexibility for lower power and fixed functionality-neither is pin-compatible, and both require schematic and layout revision.

Availability

TLV4011DCKR is available at Aetrix Electronics and suitable for electricity meters, cordless power tools, circuit breakers, and thermostats requiring stable component supply across long production lifecycles.

Supply support for TLV4011DCKR 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 ICs and power management solutions.

The TLV4011DCKR belongs to TI's precision voltage supervisor family, designed specifically for low-power, high-accuracy undervoltage detection in battery-operated and industrial equipment where reliability under electrical stress is critical.

FAQ

What is the minimum supply voltage required for TLV4011DCKR to assert RESET during power-up?

The TLV4011DCKR asserts RESET low during power-on when V_DD exceeds 0.8 V, as specified in the power-up reset voltage (V_POR) parameter. This ensures reliable initialization even with weak or slowly ramping supplies. Below 0.8 V, the device remains in undefined state; once V_DD crosses this threshold, RESET remains active until SENSE rises above V_IT. TLV4011DCKR maintains this behavior across its full –40°C to 85°C operating range.

Can TLV4011DCKR monitor a 5-V rail directly, and what resistor values are recommended for the SENSE divider?

Yes, TLV4011DCKR can monitor a 5-V rail directly using a resistor divider on the SENSE pin. To trigger RESET at 5.0 V, set R1 and R2 so that (R2/(R1+R2)) × 5.0 V = 1.226 V. For example, with R2 = 1 MΩ, R1 ≈ 3.08 MΩ. Total divider current should exceed 100× the input bias current (25 nA), so ≤10 μA is sufficient-enabling high-value resistors to minimize power draw. TLV4011DCKR's ±25 nA input current ensures minimal loading error.

Does TLV4011DCKR require an external bypass capacitor, and where should it be placed?

Yes, TLV4011DCKR requires a 0.1-μF ceramic capacitor placed as close as possible between VDD and GND pins to suppress supply noise and ensure stable reference operation. TI also recommends a 1-nF to 100-nF capacitor from SENSE to GND in electrically noisy environments to reduce sensitivity to transients. These capacitors are mandatory for achieving specified ±1.5% threshold accuracy and glitch immunity. TLV4011DCKR's performance degrades without proper decoupling.

How does the hysteresis of TLV4011DCKR affect its undervoltage detection behavior?

TLV4011DCKR's 15 mV typical hysteresis creates separate rising and falling thresholds: RESET de-asserts when SENSE rises above V_IT + 15 mV, and re-asserts only when SENSE falls below V_IT. This prevents chatter during slow or noisy voltage recovery, especially critical in battery-powered tools where voltage sags may be temporary. The hysteresis is internal and fixed-no external components are needed. TLV4011DCKR's hysteresis value is trimmed and characterized across temperature, ensuring consistent behavior from –40°C to 85°C.

Is TLV4011DCKR suitable for automotive applications, and what is its qualification status?

TLV4011DCKR is not AEC-Q200 qualified and is intended for industrial and consumer applications only. For automotive use, TI offers the pin-compatible TLV4011-Q1, which is qualified to AEC-Q100 Grade 2 (–40°C to 105°C) and includes enhanced ESD protection and extended temperature validation. TLV4011DCKR operates from –40°C to 85°C and meets JEDEC JESD22-A114 (±2000 V HBM) ESD ratings, but lacks automotive-specific reliability testing. Customers designing for automotive systems must specify TLV4011-Q1 instead of TLV4011DCKR.