Texas Instruments TLV70031DSER

Overview

TLV70031DSER from Texas Instruments is a 3.1-V fixed-output, 200-mA low-dropout linear regulator (LDO) with 31 μA quiescent current, 2% output accuracy, and 43 mV dropout at 50 mA - designed for power-sensitive portable applications such as Bluetooth headsets and ZigBee sensor nodes.

For engineers reviewing the TLV70031DSER datasheet, TLV70031DSER pinout, TLV70031DSER application, or TLV70031DSER equivalent, key selection considerations include its 0.1-μF minimum stable output capacitance, active-high enable functionality, thermal shutdown behavior, and WSON-6 package footprint compatibility with space-constrained PCB layouts.

Technical Context

The TLV70031DSER uses a PMOS pass transistor to achieve ultra-low dropout voltage that scales with load current - 43 mV at 50 mA, 85 mV at 100 mA, and 175 mV at 200 mA under specified conditions. Its precision bandgap reference and error amplifier deliver ±2% DC output accuracy across –40°C to +125°C junction temperature.

It integrates undervoltage lockout (UVLO) triggering at 1.9 V, thermal shutdown at ~160°C with hysteresis (~20°C), and current limiting at 220–860 mA. The EN pin requires ≥0.9 V to activate regulation and ≤0.4 V to enter 1-μA shutdown mode.

Key Specifications

Pinout & Package

TLV70031DSER is packaged in a 1.5-mm × 1.5-mm WSON-6 (DSE) thermally enhanced leadless package with wettable flanks, optimized for automated optical inspection and thermal dissipation in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850B0TE/V33 and MCP1700T-3102E/MB, TLV70031DSER offers the optimal balance of low dropout (43 mV), moderate IQ (31 μA), integrated EN and thermal protection, and industrial-grade reliability - making it ideal for cost-sensitive, space-constrained portable electronics where full automotive qualification is unnecessary.

Availability

TLV70031DSER is available at Aetrix Electronics and suitable for wireless handsets, ZigBee networks, and Li-ion operated handheld products requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for TLV70031DSER 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions across industrial, automotive, and personal electronics markets.

The TLV700 series was developed specifically for portable, battery-powered equipment - emphasizing ultra-low quiescent current, minimal external components, and robust operation across wide temperature and load ranges.

FAQ

What is the minimum input voltage required for TLV70031DSER to regulate 3.1 V output?

The TLV70031DSER 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. Absolute minimum VIN is 2 V per spec, but regulation only occurs above VOUT + VDO under load.

Does TLV70031DSER require an input capacitor for stability?

No - TLV70031DSER does not require an input capacitor for stability. However, TI recommends a 0.1–1 μF low-ESR ceramic capacitor from IN to GND to improve transient response, noise rejection, and ripple suppression - especially when source impedance exceeds 2 Ω or layout introduces inductance.

Can TLV70031DSER operate with a 0.1-μF output capacitor?

Yes - TLV70031DSER is explicitly designed to be stable with an effective output capacitance of ≥0.1 μF. This refers to the capacitance value under actual operating bias voltage and temperature, not the rated value. X5R/X7R ceramics are recommended to ensure sufficient effective capacitance across conditions.

What happens to TLV70031DSER when the junction temperature reaches 160°C?

When the junction temperature reaches ~160°C, TLV70031DSER activates thermal shutdown and disables the output. It remains off until the junction cools to ~140°C, then automatically resumes regulation. This cycling protects the device during sustained overload or poor heatsinking conditions.

Is TLV70031DSER pin-compatible with other packages in the TLV700 family?

No - TLV70031DSER uses the 6-pin WSON (DSE) package, while SC70-5 (DCK) and SOT-23-5 (DDC) variants have different pin counts and assignments. Pin mapping differs significantly: DSE has EN on Pin 6 and two NC pins, whereas DCK/DDC place EN on Pin 3 and lack Pin 6 entirely. PCB layout is not interchangeable.