Texas Instruments TPS3106E09DBVTG4

Overview

TPS3106E09DBVTG4 from Texas Instruments is an ultralow-supply-current voltage supervisor IC with dual reset outputs (RSTVDD and RSTSENSE), fixed 0.86 V VDD threshold, 0.551 V SENSE threshold, 1.2 μA typical supply current, and –40°C to 125°C operation. It monitors both main supply (VDD) and auxiliary rail (via SENSE) in battery-powered microcontroller systems requiring precise, low-power power-on reset and brownout detection.

For engineers reviewing the TPS3106E09DBVTG4 datasheet, TPS3106E09DBVTG4 pinout, TPS3106E09DBVTG4 application, or TPS3106E09DBVTG4 equivalent, this page delivers verified functional identity, exact pin roles, confirmed timing behavior (130 ms reset delay), true operating range (0.9 V–3.6 V), and validated alternative options for dual-rail supervision in space- and power-constrained embedded designs.

Technical Context

The TPS3106E09DBVTG4 implements two independent comparators: one monitoring VDD against a factory-trimmed 0.86 V threshold (±0.75% accuracy), and another comparing SENSE input to a 0.551 V reference (±0.009 V over temperature). Both paths feed separate open-drain reset outputs-RSTVDD and RSTSENSE-with identical 130 ms power-on reset delay and hysteresis (20 mV on VDD, 15 mV on SENSE).

It features a manual reset (MR) input with internal 100 kΩ pullup, operates down to 0.4 V VDD for early assertion, and maintains defined reset logic across its full –40°C to 125°C junction temperature range. No watchdog timer or PFI/PFO functionality is present-this is strictly a dual-threshold, dual-output supervisor.

Key Specifications

Pinout & Package

TPS3106E09DBVTG4 is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 2.80 mm, optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3106K33DBVR and MAX6326LT29D2T, the TPS3106E09DBVTG4 uniquely delivers factory-trimmed 0.86 V VDD supervision plus independent SENSE monitoring in a single SOT-23 package-enabling compact, low-power dual-rail reset without design compromises or supplemental components.

Availability

TPS3106E09DBVTG4 is available at Aetrix Electronics and suitable for battery-powered microcontrollers, industrial PLC I/O modules, and automotive body control units requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS3106E09DBVTG4 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 was designed specifically for low-power, precision voltage supervision in DSP and microcontroller systems-emphasizing ultralow current, wide temperature operation, and flexible reset architectures for mission-critical embedded applications.

FAQ

What is the exact VDD threshold voltage of the TPS3106E09DBVTG4?

The TPS3106E09DBVTG4 has a factory-trimmed VDD threshold voltage (VIT−) of 0.86 V, with ±0.75% accuracy at 25°C and a guaranteed range of 0.817 V to 0.903 V across –40°C to 125°C. This value is laser-trimmed during production and documented in Section 6.5 of the SLVS363H datasheet. The 'E09' suffix explicitly denotes the 0.86 V variant.

Does the TPS3106E09DBVTG4 include a watchdog timer?

No, the TPS3106E09DBVTG4 does not include a watchdog timer. It belongs to the TPS3106 subfamily, which provides dual open-drain reset outputs (RSTVDD and RSTSENSE) but omits the WDI input and watchdog logic found only in the TPS3110 series. The presence of pins 1 (RSTVDD), 5 (SENSE), and 6 (RSTSENSE), and absence of WDI, confirms this functional distinction per Figures 5-2 and 7-2 in the datasheet.

Can the TPS3106E09DBVTG4 monitor a 1.8 V rail using the SENSE input?

Yes, the TPS3106E09DBVTG4 can monitor a 1.8 V rail via the SENSE input using an external resistor divider. Since the SENSE comparator threshold is fixed at 0.551 V, a divider ratio of R1/R2 = (1.8 V / 0.551 V) − 1 ≈ 2.27 achieves trip at 1.8 V. Per Section 7.3.4 and Figure 8-1, total divider current should be ~1 μA-e.g., R1 = 1.1 MΩ, R2 = 487 kΩ-ensuring minimal loading and accurate threshold tracking.

What is the function of the MR pin on the TPS3106E09DBVTG4?

The MR (manual reset) pin on the TPS3106E09DBVTG4 is an active-low input that forces both RSTVDD and RSTSENSE outputs low when pulled below 0.3×VDD. Reset remains asserted for the full 130 ms delay after MR returns high. An internal 100 kΩ pullup resistor allows MR to be left floating if unused, and the pin tolerates voltages up to VDD + 0.3 V per Absolute Maximum Ratings (Section 6.1).

Is the TPS3106E09DBVTG4 RoHS-compliant and lead-free?

Yes, the TPS3106E09DBVTG4 is RoHS-compliant and lead-free. Its DBV (SOT-23) package carries the 'G4' suffix, which Texas Instruments designates for lead-free, RoHS-compliant packaging per their standard ordering nomenclature and environmental compliance documentation (SLYO211B).