Texas Instruments TPS3779ADBVR

Overview

TPS3779ADBVR from Texas Instruments is a dual-channel, low-power, high-accuracy voltage detector with push-pull outputs in a SOT23-6 package. It monitors two independent supply rails (SENSE1/SENSE2) over 1.5 V–6.5 V input range, provides ±1% VIT+ threshold accuracy, 2 µA typical quiescent current, and 1% factory-set hysteresis - enabling precise power-rail supervision in battery-powered microcontroller systems.

For engineers reviewing the TPS3779ADBVR datasheet, TPS3779ADBVR pinout, TPS3779ADBVR application, or TPS3779ADBVR equivalent, this page delivers verified electrical specifications, thermal behavior across –40°C to 125°C, real-world timing performance (tPD(r) = 5.5 µs, tSD = 570 µs), and design-critical output drive capability (VOH = 0.8×VDD, VOL ≤ 0.25 V at 2 mA).

Technical Context

The TPS3779ADBVR implements two independent precision comparators with internal reference trimming, each featuring matched rising (VIT+) and falling (VIT–) thresholds and fixed 1% hysteresis. Its push-pull outputs eliminate external pull-up resistors and support direct interfacing with 1.5 V–6.5 V logic domains without level-shifting.

It operates across full industrial temperature range (–40°C to 125°C) with guaranteed VIT+ deviation ≤ ±0.4% over temperature and supply voltage (1.5 V ≤ VDD ≤ 6.5 V), while maintaining sub-6 µs propagation delay and 570 µs startup delay after VDD crosses VDD(min).

Key Specifications

Pinout & Package

SOT23-6 package (2.92 mm × 1.30 mm), thermally optimized for surface-mount assembly and low-profile applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel voltage detector applications.

Compared with TPS3779ADBVR, TPS3779BDBVR trades threshold precision for enhanced noise immunity, while TPS3780ADBVR replaces push-pull drive with open-drain flexibility - both retain identical footprint, temperature range, and supply compatibility.

Availability

TPS3779ADBVR is available at Aetrix Electronics and suitable for microcontroller supervision, portable medical devices, industrial building automation nodes, and SSD power-rail sequencing requiring stable component supply and long-term lifecycle support.

Supply support for TPS3779ADBVR 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 and embedded processing technologies, with decades of expertise in precision power management and signal chain solutions.

The TPS37xx family was designed specifically for space-constrained, low-power systems requiring dual-rail monitoring with high threshold accuracy and minimal external components - targeting portable, medical, and industrial edge applications.

FAQ

What is the maximum supply voltage the TPS3779ADBVR can tolerate?

The TPS3779ADBVR has an absolute maximum VDD rating of 7 V. Operation beyond 6.5 V - its recommended maximum - risks permanent damage. The device is rated for continuous operation from 1.5 V to 6.5 V, with thermal derating required above 125°C junction temperature. Always include transient suppression if the supply may exceed 7 V during hot-swap or load-dump events.

Does the TPS3779ADBVR require external pull-up resistors on its outputs?

No, the TPS3779ADBVR features push-pull outputs and does not require external pull-up resistors. Its OUT1 and OUT2 pins actively drive high (to 0.8×VDD) and low (≤0.25 V at 2 mA), enabling direct connection to CMOS inputs without additional components. This reduces bill-of-materials cost and PCB area versus open-drain alternatives like the TPS3780 series.

Can the TPS3779ADBVR monitor voltages higher than its VDD supply?

Yes, the SENSE1 and SENSE2 inputs accept voltages from 0 V to 6.5 V regardless of VDD level (1.5 V–6.5 V). This allows monitoring of higher-voltage rails - such as a 5 V supply - using a resistor divider, even when VDD is powered from a lower 3.3 V rail. Input bias current is only ±15 nA, minimizing divider error.

What is the guaranteed hysteresis value for the TPS3779ADBVR?

The TPS3779ADBVR has a factory-trimmed hysteresis of exactly 1%, defined as (VIT+ − VIT−)/VIT+. This value is guaranteed across temperature (–40°C to 125°C) and supply voltage (1.5 V–6.5 V), with no variation due to process or aging. It is distinct from the TPS3779BDBVR (5%), TPS3779CDBVR (10%), and TPS3779DDBVR (0.5%) variants.

How does the TPS3779ADBVR behave during power-up?

Upon power-up, the TPS3779ADBVR enters a 570 µs startup delay period after VDD crosses VDD(min). During this time, outputs remain in a known high-impedance state until internal circuitry stabilizes. After delay completion, outputs respond dynamically to SENSE1/SENSE2 levels. This prevents spurious resets caused by VDD ramping through intermediate voltages.