Texas Instruments TLV70031DSET

Overview

TLV70031DSET from Texas Instruments is a 3.1-V fixed-output, 200-mA low-dropout (LDO) linear regulator in a 1.5-mm × 1.5-mm WSON-6 package. It delivers 2% output accuracy, 31 μA quiescent current, 43 mV dropout at 50 mA, and 68 dB PSRR at 1 kHz-designed for Li-ion–powered handheld devices requiring stable, low-noise bias for RF sections.

For engineers reviewing the TLV70031DSET datasheet, TLV70031DSET pinout, TLV70031DSET application, or TLV70031DSET equivalent, key selection criteria include ultra-low IQ for battery runtime, minimal 0.1-μF output capacitance support for space-constrained layouts, thermal shutdown and current limit for fault resilience, and compatibility with ceramic capacitors across –40°C to +125°C operating range.

Technical Context

The TLV70031DSET employs a PMOS pass transistor architecture enabling low dropout voltage that scales with load current-43 mV at 50 mA and 175 mV at 200 mA-and maintains regulation down to zero load. Its precision bandgap reference and error amplifier ensure ±2% DC accuracy over full temperature and line/load conditions.

Functional modes include normal regulation, dropout operation (where VOUT = VIN – VDO), current limiting (ICL = 220–860 mA), and thermal shutdown triggered at ~160°C with hysteresis reset at ~140°C. Enable logic is active-high (VEN ≥ 0.9 V), with shutdown current <2 μA.

Key Specifications

Pinout & Package

TLV70031DSET uses the DSE (WSON-6) package: 1.5 mm × 1.5 mm, 0.5-mm pitch, exposed thermal pad. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT, Pin 4 = NC, Pin 5 = NC, Pin 6 = EN. NC pins may be tied to GND to improve thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TLV70031DSET, TLC70031DSET trades higher quiescent current and reduced output current for smaller die size in SC-70, while TPS7A0530DSET offers lower IQ and better thermal performance in identical packaging but at 3.0 V-requiring voltage-margin analysis for 3.1-V–dependent loads.

Availability

TLV70031DSET is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, industrial handheld scanners, and Bluetooth audio earbuds requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TLV70031DSET 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 ICs and precision analog solutions.

The TLV700 series was designed specifically for portable, battery-powered equipment-emphasizing ultra-low IQ, small footprint, and robust transient performance in space- and energy-constrained applications.

FAQ

What is the minimum input voltage required for TLV70031DSET to regulate at 3.1 V?

The TLV70031DSET requires VIN ≥ VOUT + VDO. At 50 mA load, VDO = 43 mV, so minimum VIN = 3.143 V. At 200 mA, VDO = 175 mV, requiring VIN ≥ 3.275 V. The device also enforces UVLO at 1.9 V, below which it remains disabled regardless of load.

Can TLV70031DSET operate with a 0.1-μF output capacitor?

Yes, TLV70031DSET is explicitly designed to be stable with an effective output capacitance of 0.1 μF or greater. This refers to the capacitance value under actual operating bias voltage and temperature-not the rated value-so X5R/X7R ceramics rated ≥0.1 μF are recommended to maintain ≥0.1 μF effective capacitance.

Does TLV70031DSET require an input capacitor?

An input capacitor is not required for stability, but TI recommends a 0.1–1 μF low-ESR ceramic capacitor from IN to GND to improve transient response, reduce noise coupling, and counteract source impedance. It becomes essential if source impedance exceeds 2 Ω or fast load transients are present.

How does the enable pin (EN) behave on TLV70031DSET?

The EN pin is active-high: TLV70031DSET turns on when EN ≥ 0.9 V and shuts down when EN ≤ 0.4 V. In shutdown, ground current drops to <2 μA. If enable functionality is unused, EN may be tied directly to IN to ensure permanent operation without additional circuitry.

What thermal protection features does TLV70031DSET include?

TLV70031DSET integrates thermal shutdown that disables the output when junction temperature reaches ~160°C. It automatically recovers when temperature falls to ~140°C, providing hysteresis. This cycling protects against permanent damage during sustained overload or inadequate heatsinking, with full specification across –40°C to +125°C junction range.