Texas Instruments TLV809I50DBVR

Overview

TLV809I50DBVR from Texas Instruments is a 3-pin push-pull supply voltage supervisor IC designed for undervoltage monitoring of 5-V systems, featuring a fixed 4.55-V threshold (V_IT–), 200-ms reset delay (t_d), 9-µA typical supply current, and operation across –40°C to +85°C. It provides reliable power-on reset generation in microcontroller, FPGA, and ASIC power sequencing circuits.

For engineers reviewing the TLV809I50DBVR datasheet, TLV809I50DBVR pinout, TLV809I50DBVR application, or TLV809I50DBVR equivalent, key selection criteria include its precise 4.55-V detection threshold, push-pull RESET output with 0.3-V low-level voltage at 500 µA, SOT-23 (DBV) 3-pin package, and compatibility with industrial-grade 5-V rail supervision where fast transient rejection and no external components are required.

Technical Context

The TLV809I50DBVR integrates an internal 1.137-V reference, precision resistor divider, oscillator-based timer, and push-pull output stage to deliver deterministic reset assertion during power-up (when V_DD < 4.45 V) and deassertion (after 120–280 ms delay once V_DD exceeds 4.55 V). Its active-low RESET remains valid down to V_DD = 1.1 V.

It operates within 2–6 V supply range, requires only a 0.1-µF ceramic bypass capacitor on V_DD, and rejects transients ≥10 µs duration per specification - enabling robust performance in noisy industrial and metering environments without external filtering.

Key Specifications

Pinout & Package

SOT-23 (DBV) 3-pin plastic package, 2.90 mm × 1.60 mm body size, tape-and-reel packaging (3000 pcs/reel), RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV809K33DBVR and MAX809TRD3+T, the TLV809I50DBVR uniquely delivers 4.55-V threshold accuracy, push-pull output, and 9-µA quiescent current in a drop-in SOT-23 package - making it optimal for new 5-V industrial designs prioritizing simplicity, low power, and deterministic timing.

Availability

TLV809I50DBVR is available at Aetrix Electronics and suitable for factory automation, electricity meters, and building automation systems requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant sourcing.

Supply support for TLV809I50DBVR 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, with decades of experience in high-reliability industrial and automotive ICs.

The TLV809 family was engineered specifically for cost-sensitive, space-constrained power supervision in industrial control, energy metering, and consumer electronics - delivering precision threshold detection and integrated timing in minimal 3-pin form factor.

FAQ

What is the exact threshold voltage range for TLV809I50DBVR?

The TLV809I50DBVR has a guaranteed negative-going input threshold voltage (V_IT–) range of 4.45 V (minimum) to 4.65 V (maximum) across –40°C to +85°C. This 4.55-V nominal threshold is factory-trimmed and optimized for reliable supervision of standard 5-V power rails, with 60-mV hysteresis to prevent chatter during slow voltage transitions.

Does TLV809I50DBVR require an external pull-up resistor on the RESET pin?

No, TLV809I50DBVR does not require an external pull-up resistor because it features a push-pull RESET output stage. The device actively drives RESET high (to V_DD – 0.2 V typical) and low (to 0.3 V at 500 µA), enabling direct connection to CMOS inputs without additional components - unlike open-drain supervisors such as the TLV803 series.

What is the recommended bypass capacitor for TLV809I50DBVR?

A 0.1-µF ceramic capacitor is recommended between the V_DD and GND pins of TLV809I50DBVR, placed as close as possible to the device. This capacitor stabilizes the internal reference and threshold detection circuitry, improves noise immunity, and ensures accurate reset timing - especially critical during fast transients or high-EMI conditions in industrial applications.

Can TLV809I50DBVR be used to monitor a 3.3-V supply?

No, TLV809I50DBVR is not suitable for monitoring 3.3-V supplies because its 4.45–4.65-V threshold exceeds the nominal 3.3-V rail. For 3.3-V supervision, TI recommends TLV809K33DBVR (2.87–2.99-V threshold). Using TLV809I50DBVR on a 3.3-V rail would result in permanent RESET assertion, preventing system operation.

What is the maximum supply voltage rating for TLV809I50DBVR?

The absolute maximum supply voltage (V_DD) for TLV809I50DBVR is 6.5 V, but for reliable long-term operation, TI specifies a recommended maximum of 6 V. Continuous operation at 6.5 V is limited to ≤1000 hours per datasheet guidance; sustained use above 6 V risks accelerated parametric drift or reduced lifetime reliability.