Texas Instruments TLV803EA30DCKR

Overview

TLV803EA30DCKR from Texas Instruments is an open-drain, active-low voltage supervisor IC designed for reliable power-on reset and brownout detection in ultra-low-power systems. It features a 3.0 V factory-programmed threshold (±0.5% typical accuracy), 200 ms fixed reset delay, 250 nA typical supply current, and guaranteed operation down to 0.7 V VDD - making it ideal for battery-backed microcontrollers and energy-harvesting sensors.

For engineers reviewing the TLV803EA30DCKR datasheet, TLV803EA30DCKR pinout, TLV803EA30DCKR application, or TLV803EA30DCKR equivalent, key selection criteria include its SC-70 (DCK) 3-pin package, open-drain output requiring external pull-up, glitch immunity (10 µs typical), wide –40°C to +125°C operating range, and compatibility with legacy MAX803/TPS3809-based designs.

Technical Context

The TLV803EA30DCKR implements a precision bandgap-referenced comparator with built-in hysteresis (1.2% typical) to prevent chatter during threshold crossing. Its internal timer enforces a fixed 200 ms reset assertion window after VDD recovers above the rising threshold (VIT+ = VIT– + VHYS), ensuring stable MCU initialization.

Unlike push-pull variants, the open-drain topology supports wired-OR reset bus configurations and level-shifting across voltage domains. Glitch immunity is achieved via a dedicated filter that rejects transients shorter than 10 µs at 5% overdrive, eliminating false resets from switching noise or ESD-induced supply dips.

Key Specifications

Pinout & Package

TLV803EA30DCKR is housed in a 3-pin SC-70 (DCK) package (2.00 mm × 1.25 mm body), optimized for space-constrained PCB layouts. Pin 1 = RESET, Pin 2 = GND, Pin 3 = VDD - standard pinout compatible with TI's TLV80x family and legacy SOT-23 supervisors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EA30DCKR, TLV803EA30DBVR offers identical electrical performance in a larger, more manufacturable package, while TPS3809L30DBVR trades 4× higher IQ and reduced brownout coverage for legacy design continuity - making the DCK variant optimal for miniaturized, battery-critical systems.

Availability

TLV803EA30DCKR is available at Aetrix Electronics and suitable for electricity meters, portable medical sensors, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TLV803EA30DCKR 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 power management and signal chain ICs.

The TLV803E series belongs to TI's low-power voltage supervisor product line, engineered specifically for battery-operated, space-constrained, and high-reliability applications where deterministic reset behavior and nanoscale quiescent current are mandatory.

FAQ

What is the exact reset threshold voltage of TLV803EA30DCKR?

The TLV803EA30DCKR has a factory-programmed falling threshold voltage (VIT–) of 3.0 V with ±0.5% typical accuracy across –40°C to +125°C. This value is laser-trimmed during production and does not require external components. The rising threshold (VIT+) is VIT– plus hysteresis (1.2% typical), ensuring stable release without oscillation near the trip point. TLV803EA30DCKR maintains this specification under all recommended operating conditions.

Does TLV803EA30DCKR require an external pull-up resistor on the RESET pin?

Yes, TLV803EA30DCKR uses an open-drain active-low output and requires an external pull-up resistor to define the logic-high voltage level. A 10 kΩ resistor to the target logic rail (e.g., 1.8 V, 3.3 V, or 5 V) is typical. Unlike push-pull variants (e.g., TLV809E), this topology enables wired-OR reset buses and voltage-level translation. TLV803EA30DCKR's leakage current remains below 350 nA at 6 V, minimizing power penalty.

What is the minimum supply voltage at which TLV803EA30DCKR guarantees correct reset assertion?

TLV803EA30DCKR guarantees a defined reset output state down to 0.7 V VDD (VPOR = 700 mV). Below this voltage, the output becomes undefined. This ultra-low VPOR enables reliable reset generation during severe brownout events - such as automotive cold cranking or end-of-life battery discharge - where other supervisors may fail silently. TLV803EA30DCKR's internal circuitry remains functional and responsive throughout this range.

Can TLV803EA30DCKR replace MAX803L in an existing design?

Yes, TLV803EA30DCKR is pin-to-pin compatible with MAX803L in the SC-70 (DCK) package and shares identical 3.0 V threshold, open-drain output, and 200 ms reset delay. Electrical differences - including 4× lower IQ (250 nA vs. 1 µA), tighter threshold accuracy (±0.5% vs. ±1.5%), and extended temperature range (–40°C to +125°C vs. –40°C to +85°C) - provide immediate reliability and efficiency upgrades. No PCB changes are needed for TLV803EA30DCKR drop-in replacement.

How does the glitch immunity feature work in TLV803EA30DCKR?

TLV803EA30DCKR incorporates a built-in glitch filter that ignores transients on VDD shorter than 10 µs (typical) when overdrive is ≥5%. This prevents false resets caused by switching regulator noise, ESD coupling, or cable-bounce events. The filter operates independently of the comparator and timer blocks, ensuring that only sustained undervoltage conditions trigger reset assertion. TLV803EA30DCKR's glitch immunity is characterized per JEDEC JESD78 and verified across temperature and voltage extremes.