Texas Instruments TPS3106E16DBVT

Overview

TPS3106E16DBVT from Texas Instruments is an ultralow-supply-current voltage supervisor IC with dual open-drain reset outputs (RSTVDD and RSTSENSE), fixed 1.523 V VDD threshold (±0.75% accuracy), 1.2 μA typical supply current, and operation from 0.9 V to 3.6 V. It monitors both main supply (VDD) and auxiliary voltage (SENSE) in battery-powered microcontroller systems requiring precise power-on reset and brownout detection.

For engineers reviewing the TPS3106E16DBVT datasheet, TPS3106E16DBVT pinout, TPS3106E16DBVT application, or TPS3106E16DBVT equivalent, key selection criteria include its dual-sense capability, −40°C to 125°C operating range, SOT-23-6 package, 130 ms power-on reset delay, and compatibility with low-voltage DSPs and portable equipment where quiescent current and threshold accuracy are critical.

Technical Context

The TPS3106E16DBVT implements two independent comparators: one for VDD (with fixed 1.523 V trip point) and one for SENSE (with 0.551 V reference), each driving dedicated open-drain outputs (RSTVDD and RSTSENSE). Its internal timer initiates a 130 ms delay after VDD exceeds VIT– + VHYS before releasing RSTVDD, ensuring stable power-up sequencing.

It features manual reset (MR) with internal 100 kΩ pullup, operates down to 0.4 V VDD for early reset assertion, and maintains functional supervision across its full −40°C to 125°C temperature range without external components beyond decoupling capacitance.

Key Specifications

Pinout & Package

TPS3106E16DBVT is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 2.80 mm, optimized for space-constrained PCB layouts in portable and industrial applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3106K33DBVT and TPS3808G15DBVR, the TPS3106E16DBVT uniquely delivers fixed 1.523 V VDD supervision with concurrent SENSE monitoring in a single SOT-23-6 package-enabling compact, low-component-count designs for 1.6 V–based embedded systems without sacrificing accuracy or temperature robustness.

Availability

TPS3106E16DBVT is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial PLC I/O modules, and automotive body control units requiring stable component supply and long-term lifecycle support.

Supply support for TPS3106E16DBVT 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and high-reliability ICs.

The TPS31xx family is designed for precision voltage supervision in low-power DSP, microcontroller, and microprocessor systems-delivering guaranteed reset behavior across wide voltage and temperature ranges with minimal quiescent current.

FAQ

What is the exact VDD threshold voltage of the TPS3106E16DBVT?

The TPS3106E16DBVT has a nominal VDD threshold voltage (VIT−) of 1.523 V, with a maximum deviation of ±0.75% over temperature and process variation. This value is factory-trimmed and specified in the Electrical Characteristics table under "TPS31xxE16" row at TA = 25°C. The TPS3106E16DBVT uses this fixed threshold to supervise 1.6 V supply rails without external resistors.

Does the TPS3106E16DBVT support monitoring two different voltage rails simultaneously?

Yes, the TPS3106E16DBVT supports simultaneous dual-rail supervision: VDD is monitored internally against its 1.523 V threshold, producing RSTVDD, while the SENSE pin compares an external voltage against a 0.551 V reference, producing RSTSENSE. Both outputs are active-low open-drain and operate independently-enabling coordinated reset of logic and analog subsystems in mixed-voltage designs.

What is the minimum VDD voltage required for the TPS3106E16DBVT to assert RESET during power-up?

The TPS3106E16DBVT asserts RSTVDD when VDD rises above 0.4 V, per the datasheet's power-on reset specification. This early assertion ensures reliable initialization even during ultra-low-voltage startup conditions, such as battery recovery after deep discharge. Full supervision (including hysteresis and delay timing) becomes active once VDD exceeds 0.8 V.

Can the TPS3106E16DBVT be used in automotive under-hood applications?

Yes, the TPS3106E16DBVT is characterized for operation from −40°C to 125°C and packaged in a thermally robust SOT-23-6 (DBV) case. Its 125°C rating, 20 mV hysteresis, and guaranteed performance across temperature make it suitable for under-hood body control modules and engine management peripherals where ambient temperatures exceed 105°C.

What is the function of the MR pin on the TPS3106E16DBVT?

The MR (manual reset) pin on the TPS3106E16DBVT is an active-low input that forces both RSTVDD and RSTSENSE low when pulled below 0.3 × VDD. Reset remains asserted for 130 ms after MR returns high. An internal 100 kΩ pullup resistor allows MR to be left unconnected if unused; for pushbutton reset, connect a momentary switch from MR to GND.