Texas Instruments TLV803ED17DPWR

Overview

TLV803ED17DPWR 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), 40 µs fixed reset delay, 250 nA typical supply current, and operation down to 0.7 V VPOR - enabling robust supervision in battery-powered microcontrollers, FPGAs, and DSPs.

For engineers reviewing the TLV803ED17DPWR datasheet, TLV803ED17DPWR pinout, TLV803ED17DPWR application, or TLV803ED17DPWR equivalent, key selection criteria include its X2SON-5 (DPW) package footprint, guaranteed reset assertion below 1.7 V with hysteresis, glitch immunity against <10 µs transients, and compatibility with manual reset (MR) input for system-level fault recovery.

Technical Context

The TLV803ED17DPWR implements a precision bandgap-referenced comparator with integrated hysteresis (VHYS = 0.9–1.5% of VIT−) to prevent chatter during slow-rising or noisy supply rails. Its internal state machine ensures reset remains asserted for exactly 40 µs after VDD crosses VIT+ (1.7 V + VHYS), independent of supply slew rate.

Unlike push-pull variants, the open-drain output requires an external pull-up resistor but enables wired-OR reset bus configurations and supports mixed-voltage system interfacing. The MR pin (Pin 2) provides asynchronous manual reset initiation with 500 ns minimum pulse width, and the thermal pad (Pin 3) enhances thermal dissipation without requiring solder connection.

Key Specifications

Pinout & Package

X2SON-5 (DPW) package: 0.8 mm × 0.8 mm, 0.35 mm height, thermally enhanced with exposed pad (Pin 3). Pin 1 = RESET, Pin 2 = MR, Pin 4 = VDD, Pin 5 = GND. Pad (Pin 3) is NC/thermal - may be connected to GND for improved thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803ED17DBVR, the TLV803ED17DPWR offers MR functionality and 60% smaller footprint; versus MAX803SUR17+T, it delivers 6.4× lower quiescent current and configurable reset timing - making it optimal for compact, battery-critical designs requiring field recoverability.

Availability

TLV803ED17DPWR is available at Aetrix Electronics and suitable for industrial automation controllers, portable medical devices, smart building sensors, and automotive cabin modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV803ED17DPWR 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TLV803E series belongs to TI's low-power voltage supervisor product line, engineered specifically for energy-constrained applications where nanoscale IQ, small footprint, and high threshold accuracy are mandatory for system reliability.

FAQ

What is the exact reset threshold voltage of TLV803ED17DPWR?

The TLV803ED17DPWR has a factory-programmed falling threshold voltage (V_IT−) 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 components. The rising threshold (V_IT+) equals V_IT− plus hysteresis (0.9–1.5% of V_IT−), ensuring stable release without oscillation.

Does TLV803ED17DPWR require an external pull-up resistor on the RESET pin?

Yes, TLV803ED17DPWR uses an open-drain output and requires an external pull-up resistor to the appropriate logic voltage (e.g., 1.8 V, 3.3 V, or 5 V). Typical values range from 10 kΩ to 100 kΩ depending on rise-time requirements and bus capacitance. Pull-up is mandatory - unlike push-pull variants such as TLV809E, the TLV803ED17DPWR cannot drive high actively.

Can TLV803ED17DPWR operate reliably below 1.0 V?

Yes - TLV803ED17DPWR maintains a defined output state down to VPOR = 700 mV, meaning it can assert reset correctly even as the supply collapses below 1.0 V. Below 700 mV, the RESET output becomes undefined. This capability is critical for detecting end-of-battery conditions in coin-cell applications where voltage decay extends into sub-1 V ranges.

What is the function of Pin 3 (PAD) on TLV803ED17DPWR?

Pin 3 is the thermal pad (NC) of the X2SON-5 (DPW) package. It is not electrically connected but serves as a thermal conduction path. While not required to be soldered, connecting it to a GND plane improves thermal performance and junction-to-board resistance (R_θJB = 320.4°C/W). It must never be used as a signal or power connection.

How does the MR pin behave during normal operation of TLV803ED17DPWR?

During normal operation, the MR pin (Pin 2) is internally pulled up (100 kΩ in DPW package) and may be left floating. When pulled low for ≥500 ns, it forces immediate reset assertion regardless of VDD level. After release, RESET remains low for the full 40 µs delay before returning high - identical to power-on reset timing. This enables hardware-initiated recovery without cycling VDD.