Texas Instruments TLV803EA17DPWR

Overview

TLV803EA17DPWR 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 1.7 V factory-programmed threshold (±0.5% typical accuracy), 250 nA typical supply current, 200 ms fixed reset delay, and guaranteed operation down to 0.7 V VDD - making it ideal for battery-backed microcontrollers and FPGA configuration sequencing.

For engineers reviewing the TLV803EA17DPWR datasheet, TLV803EA17DPWR pinout, TLV803EA17DPWR application, or TLV803EA17DPWR equivalent, key selection criteria include its X2SON-5 (DPW) package footprint, open-drain output requiring external pull-up, ±0.5% threshold accuracy over –40°C to +125°C, and glitch immunity against sub-10 µs transients on VDD.

Technical Context

The TLV803EA17DPWR implements a precision bandgap-referenced comparator with built-in hysteresis (1.2% typical) to prevent chatter during slow-rising or noisy supply rails. Its internal timer ensures a fixed 200 ms reset assertion period after VDD recovers above the rising threshold (VIT+ = VIT– + VHYS), independent of external components.

Unlike push-pull variants, the open-drain topology supports wired-OR reset bus configurations and level-shifting across voltage domains. The DPW package includes a thermal pad (Pin 3) and manual reset input (MR, Pin 2), enabling system-initiated reset without cycling VDD.

Key Specifications

Pinout & Package

X2SON-5 (DPW) package: 0.8 mm × 0.8 mm, 0.35 mm height, thermal pad (Pin 3) for enhanced thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EA17DBVR, the TLV803EA17DPWR offers MR functionality and 70% smaller footprint but requires careful thermal pad layout; versus MAX803SUR17+T, it delivers 6× lower quiescent current and extended temperature range at the cost of open-drain drive strength.

Availability

TLV803EA17DPWR is available at Aetrix Electronics and suitable for industrial sensor nodes, medical wearables, smart meter MCUs, and automotive telematics modules requiring stable component supply across long product lifecycles.

Supply support for TLV803EA17DPWR 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 specializing in analog, embedded processing, and power management technologies.

The TLV803E series belongs to TI's precision voltage supervisor product line, engineered for ultra-low-power, high-accuracy power monitoring in battery-critical and thermally demanding applications.

FAQ

What is the exact reset threshold voltage of the TLV803EA17DPWR?

The TLV803EA17DPWR has a factory-programmed falling threshold voltage (VIT–) of 1.7 V with ±0.5% typical accuracy across –40°C to +125°C. This value is laser-trimmed during production and does not require external calibration. The rising threshold (VIT+) equals VIT– plus hysteresis (1.2% typical), ensuring stable release without oscillation during slow-rising supplies.

Does the TLV803EA17DPWR require an external pull-up resistor on the RESET pin?

Yes, the TLV803EA17DPWR uses an open-drain, active-low output architecture and requires an external pull-up resistor on the RESET pin. A 10 kΩ resistor to the monitored VDD rail (or another compatible voltage domain) is recommended per the datasheet. Unlike push-pull variants such as TLV809E, this topology enables wired-OR reset buses and level translation between different logic families.

What is the function of Pin 2 (MR) on the TLV803EA17DPWR DPW package?

Pin 2 (MR) is an active-low manual reset input that allows external circuitry or firmware to assert a hardware reset independently of VDD conditions. Pulling MR low forces RESET to active state for the full 200 ms delay period. When left floating, the internal 100 kΩ pull-up resistor holds MR high, rendering it inactive. This feature supports field firmware updates and diagnostic recovery sequences in the TLV803EA17DPWR.

Can the TLV803EA17DPWR operate reliably below 1.7 V?

Yes - the TLV803EA17DPWR guarantees defined output behavior down to 0.7 V VDD (VPOR), well below its 1.7 V threshold. Below VPOR, the RESET state is undefined; however, once VDD rises above 0.7 V, the device becomes functional and will assert RESET if VDD remains below 1.7 V. This enables robust cold-start behavior in energy-harvesting and supercapacitor-backed systems using the TLV803EA17DPWR.

How does the TLV803EA17DPWR handle fast voltage transients on the VDD pin?

The TLV803EA17DPWR incorporates integrated glitch immunity with a 10 µs typical rejection window (tGI). Transients shorter than this duration - even those exceeding the 1.7 V threshold - are ignored by the internal comparator. This eliminates false resets caused by switching noise, ESD events, or load-dump spikes, removing the need for external RC filters and simplifying layout for the TLV803EA17DPWR.