Texas Instruments TLV71211DSET

Overview

TLV71211DSET from Texas Instruments is a 300-mA, sub-bandgap low-dropout linear regulator (LDO) delivering a fixed 1.1 V output with ±2% DC accuracy, 35 µA quiescent current, and 68 dB PSRR at 1 kHz. It operates from 2.0 V to 5.5 V input and supports stable regulation down to 0.1 µF effective output capacitance-enabling use in ultra-low-power wireless handsets and Li-ion–powered portable devices.

For engineers reviewing the TLV71211DSET datasheet, TLV71211DSET pinout, TLV71211DSET application, or TLV71211DSET equivalent, this page delivers verified electrical specs, SON-6 package layout guidance, thermal performance data, and validated alternative LDOs for sub-1.2 V core rail generation in space-constrained battery-operated systems.

Technical Context

The TLV71211DSET uses a PMOS pass transistor architecture to achieve sub-bandgap output voltage (1.1 V) with minimal dropout headroom, enabling operation from as low as 2.0 V input while maintaining full 300-mA load capability. Its precision bandgap reference and error amplifier deliver ±2% output accuracy across –40°C to +125°C.

It integrates active high-enable logic (EN threshold: 0.9 V), thermal shutdown (+165°C trip), overcurrent protection (320–860 mA limit), and undervoltage lockout (1.9 V). Unlike the P-suffix variant, TLV71211DSET lacks internal active pull-down; shutdown draws only 1–2 mA.

Key Specifications

Pinout & Package

TLV71211DSET is housed in a 1.5-mm × 1.5-mm, 6-pin WSON (SON-6) package with exposed thermal pad (DSE suffix). The package supports fine-pitch assembly and provides 180°C/W junction-to-ambient thermal resistance on a 2-layer PCB with 2 oz copper.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-IQ, sub-1.2 V LDO applications.

Compared with TLV71211DSET, TLV71211DBVT trades miniaturization for easier handling and thermal derating, while TPS7A0211PDBVR offers nanoscale IQ at the cost of stricter output capacitance and non-drop-in enable logic-making TLV71211DSET optimal for balanced size, efficiency, and design simplicity in production-grade portable electronics.

Availability

TLV71211DSET is available at Aetrix Electronics and suitable for wireless handsets, Bluetooth® devices, and ZigBee® network nodes requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant sourcing.

Supply support for TLV71211DSET 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 specializing in analog, embedded processing, and power management technologies, with decades of LDO design expertise and broad automotive/industrial qualification.

The TLV712xx series was engineered specifically for ultra-low-power, sub-1.2 V core rail generation in battery-constrained portable electronics-prioritizing quiescent current, small footprint, and wide-temperature reliability over high-current capability.

FAQ

What is the output voltage tolerance of the TLV71211DSET over temperature and line/load conditions?

The TLV71211DSET guarantees ±2% DC output accuracy (±22 mV around 1.1 V) across –40°C to +125°C junction temperature, 2.0–5.5 V input, and 0–300 mA load. This is achieved via a precision bandgap reference and error amplifier, with line regulation of ≤5 mV and load regulation of ≤15 mV under specified conditions. The TLV71211DSET maintains this accuracy without external components or trimming.

Does the TLV71211DSET include an internal output discharge circuit?

No, the TLV71211DSET does not include an internal active pull-down circuit. Only the TLV712xxP variants (e.g., TLV71211DSER.P) integrate a 120-Ω discharge path activated during shutdown. When TLV71211DSET is disabled via the EN pin, the OUT pin remains floating and retains charge until discharged externally. This is confirmed by the functional block diagram and absence of "P" suffix in the part number.

What is the minimum output capacitance required for stability with the TLV71211DSET?

The TLV71211DSET is stable with an effective output capacitance of ≥0.1 µF-defined as the capacitance value after accounting for DC bias and temperature derating of the chosen ceramic capacitor. While 1.0 µF is recommended for optimal transient response, 0.1 µF X5R/X7R ceramics in 0402 or 0603 packages are sufficient for basic regulation, enabling significant board area savings in space-constrained designs.

Can the TLV71211DSET operate from a single-cell Li-ion battery throughout its full discharge curve?

Yes, the TLV71211DSET supports input voltages from 2.0 V to 5.5 V, covering the full usable range of a single-cell Li-ion battery (2.7 V–4.2 V nominal, down to ~2.5 V cutoff). With its PMOS pass element and 1.1 V output, it maintains regulation even at 2.5 V input (1.4 V headroom), delivering full 300 mA load current without dropout-verified in the Load Regulation and Dropout Voltage sections of the datasheet.

What thermal performance can be expected from the TLV71211DSET in a standard 2-layer PCB layout?

On a standard 2-layer PCB with 2 oz copper, the TLV71211DSET (SON-6/DSE package) exhibits a junction-to-ambient thermal resistance (R_θJA) of 180°C/W. At 70°C ambient, it supports up to 305 mW power dissipation-sufficient for 300 mA load at 2.5 V input (0.4 V dropout → 120 mW dissipation). Layout best practices (thermal pad soldering, ground plane connection) are essential to achieve this rating.