Texas Instruments TPS3106E16DBVRG4

Overview

TPS3106E16DBVRG4 from Texas Instruments is an ultralow-quiescent-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 –40°C to 125°C operation. 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 TPS3106E16DBVRG4 datasheet, TPS3106E16DBVRG4 pinout, TPS3106E16DBVRG4 application, or TPS3106E16DBVRG4 equivalent, key selection criteria include its dual-sense capability, sub-2 μA quiescent current at 0.9–3.6 V supply range, 130 ms power-on reset delay, and SOT-23-6 package compatibility with space-constrained portable designs.

Technical Context

The TPS3106E16DBVRG4 implements two independent comparators: one monitoring VDD against a factory-trimmed 1.523 V threshold (VIT–), and another comparing SENSE input to a fixed 0.551 V reference. Both outputs-RSTVDD and RSTSENSE-are active-low, open-drain, and asserted when their respective inputs fall below threshold, with hysteresis of 20 mV (VDD) and 15 mV (SENSE).

It integrates a manual reset (MR) input with internal 100 kΩ pullup, enabling system-initiated reset independent of supply conditions. The device operates across 0.9 V to 3.6 V supply and maintains functional supervision down to VDD = 0.4 V for RESET assertion, supporting ultra-low-voltage applications such as single-cell Li-ion or multi-cell NiMH systems.

Key Specifications

Pinout & Package

TPS3106E16DBVRG4 is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 2.80 mm, optimized for high-density PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3106K33DBVR and MAX6326XR31D3+T, the TPS3106E16DBVRG4 uniquely delivers 1.523 V VDD supervision with dual open-drain outputs in a single SOT-23-6 package-enabling compact, low-power dual-rail monitoring without compromise on accuracy or temperature range.

Availability

TPS3106E16DBVRG4 is available at Aetrix Electronics and suitable for portable medical devices, industrial edge controllers, and automotive body electronics requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned manufacturing traceability.

Supply support for TPS3106E16DBVRG4 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, signal chain, and real-time control ICs.

The TPS31xx family was engineered specifically for ultra-low-power, high-accuracy voltage supervision in battery-critical and thermally demanding applications-targeting DSP, microcontroller, and IoT endpoint systems where reset integrity directly impacts field reliability.

FAQ

What is the exact VDD threshold voltage of the TPS3106E16DBVRG4 and how is it trimmed?

The TPS3106E16DBVRG4 has a factory-trimmed VDD threshold voltage (VIT–) of 1.523 V, specified with ±0.75% accuracy over –40°C to 125°C. This value is laser-trimmed during wafer sort to match the "E16" designation in the part number, ensuring consistent 1.6 V nominal supply supervision without external calibration components.

Can the TPS3106E16DBVRG4 monitor a 1.2 V rail using the SENSE input?

Yes-the TPS3106E16DBVRG4 SENSE input compares against a fixed 0.551 V internal reference. To monitor a 1.2 V rail, use a resistor divider (e.g., R1 = 1.2 MΩ, R2 = 1.0 MΩ) to scale 1.2 V down to 0.551 V at SENSE. The device asserts RSTSENSE when the scaled voltage drops below threshold, enabling precise 1.2 V brownout detection.

Does the TPS3106E16DBVRG4 require an external capacitor for the power-on reset delay?

No-the 130 ms power-on reset delay in the TPS3106E16DBVRG4 is generated by an internal RC timer and requires no external capacitor. This simplifies design, improves timing consistency across temperature, and eliminates capacitor aging effects that could degrade reset window accuracy over product lifetime.

What is the minimum VDD voltage at which the TPS3106E16DBVRG4 can assert RESET?

The TPS3106E16DBVRG4 asserts RSTVDD when VDD rises above 0.4 V, guaranteeing reset functionality even during ultra-low-voltage battery discharge scenarios. This behavior is documented in Section 3 of the SLVS363H datasheet and enables reliable shutdown sequencing in single-cell Li-ion systems down to 2.5 V.

How does the manual reset (MR) pin interact with the two reset outputs of the TPS3106E16DBVRG4?

The MR pin forces both RSTVDD and RSTSENSE low simultaneously, regardless of VDD or SENSE voltage levels. After MR is released, both outputs remain low for the full 130 ms internal timer period before returning high-ensuring synchronized system-wide reset initiation and eliminating race conditions between power domains.