Texas Instruments TLV803EA26DPWR

Overview

TLV803EA26DPWR 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 2.64 V threshold voltage (±0.5% typical accuracy), 250 nA typical supply current, 40 µs fixed reset delay, and operates across –40°C to +125°C - enabling use in battery-powered IoT sensors and industrial edge controllers.

For engineers reviewing the TLV803EA26DPWR datasheet, TLV803EA26DPWR pinout, TLV803EA26DPWR application, or TLV803EA26DPWR equivalent, key selection criteria include its X2SON-5 (DPW) package footprint, guaranteed RESET assertion down to 0.7 V VDD, integrated glitch immunity (10 µs), and compatibility with manual reset (MR) functionality for system-level fault recovery.

Technical Context

The TLV803EA26DPWR implements a precision bandgap-referenced comparator with built-in hysteresis (0.9–1.5% of VIT–) to prevent chatter during slow-rising or noisy supply rails. Its internal timer ensures a fixed 40 µs reset timeout after VDD crosses the rising threshold (VIT+ = VIT– + VHYS), independent of external components.

Unlike push-pull variants, this open-drain output requires an external pull-up resistor but supports mixed-voltage interfacing (e.g., 3.3 V supervisor driving 1.8 V logic). The MR input (Pin 2) enables hardware-triggered reset initiation, with propagation delay under 700 ns and internal 100 kΩ pull-up specific to the DPW package.

Key Specifications

Pinout & Package

X2SON-5 (DPW) package: 0.8 mm × 0.8 mm, 0.35 mm height, thermal pad (Pin 3) - optimized for space-constrained wearables and sensor nodes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EA26DPWR, TLV803EB26DPWR trades ultra-fast reset response for extended hold time, while MAX803SUR26+T offers broader industry familiarity at the cost of 6.4× higher quiescent current and larger package - making TLV803EA26DPWR optimal for miniaturized, long-life embedded systems.

Availability

TLV803EA26DPWR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering modules, portable medical monitors, and PLC I/O modules requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLV803EA26DPWR 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 over 50 years of innovation in power management and signal chain technologies.

The TLV803E series belongs to TI's precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy reset functions in battery-operated and harsh-environment electronics.

FAQ

What is the exact reset threshold voltage for TLV803EA26DPWR?

The TLV803EA26DPWR has a factory-programmed falling threshold voltage (V_IT–) of 2.64 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 (V_IT+) is V_IT– plus hysteresis (0.9–1.5% of V_IT–), ensuring stable release without oscillation.

Does TLV803EA26DPWR require an external pull-up resistor on the RESET pin?

Yes, TLV803EA26DPWR uses an open-drain, active-low output and requires an external pull-up resistor to the target logic rail (e.g., 10 kΩ to 3.3 V). Unlike push-pull variants (TLV809E/TLV810E), this topology enables voltage-level translation and wired-OR reset bus configurations - a key design feature confirmed in the functional description and typical application diagrams for TLV803EA26DPWR.

What is the minimum VDD voltage at which TLV803EA26DPWR guarantees a defined RESET state?

TLV803EA26DPWR guarantees a defined RESET output state down to 0.7 V VDD - specified as VPOR (power-on reset voltage). Below 0.7 V, the output becomes undefined. This capability is explicitly verified in electrical characteristics tables and enables reliable operation during deep brownout events, such as those occurring in single-cell lithium primary battery applications.

How does the MR pin function on TLV803EA26DPWR, and is it internally pulled up?

The MR (manual reset) pin on TLV803EA26DPWR is active-low and features a 100 kΩ internal pull-up resistor - a DPW-package-specific implementation confirmed in Section 7.5 of the datasheet. Pulling MR low asserts RESET immediately; releasing it allows deassertion after the 40 µs delay. Leaving MR unconnected results in automatic high state due to the internal pull-up, eliminating need for external components.

Can TLV803EA26DPWR replace MAX803 in existing designs?

TLV803EA26DPWR is pin-to-pin compatible with MAX803 in SOT23-3 packages per manufacturer documentation, but the DPW (X2SON-5) variant requires PCB layout revision. While both offer 2.6 V-class thresholds, TLV803EA26DPWR delivers 250 nA I_DD versus MAX803's ~1.6 µA, and includes enhanced glitch immunity (10 µs vs. unspecified). Direct replacement is feasible only with package and timing verification.