Texas Instruments TLV707185ADQNR

Overview

TLV707185ADQNR from Texas Instruments is a 200-mA, low-quiescent-current (25 µA), low-noise LDO regulator with 0.5% output accuracy and 185-mV dropout at 150 mA for 1.85-V output. It operates from 2.0 V to 5.5 V input, delivers high PSRR (70 dB @ 100 Hz), and is stable with only 0.1-µF output capacitance - enabling compact, cost-effective power delivery in space-constrained portable RF systems.

For engineers reviewing the TLV707185ADQNR datasheet, TLV707185ADQNR pinout, TLV707185ADQNR application, or TLV707185ADQNR equivalent, key selection criteria include ultra-low IQ for battery longevity, guaranteed 1.85-V fixed output with ±1.5% DC accuracy over –40°C to +125°C, thermal/overcurrent protection, and compatibility with small ceramic capacitors for minimal PCB footprint.

Technical Context

The TLV707185ADQNR uses a PMOS pass transistor architecture enabling low dropout and reverse-voltage tolerance via its intrinsic body diode. Its enable circuitry accepts logic-high thresholds as low as 0.9 V, supporting direct interfacing with modern low-voltage GPIOs without level-shifting.

It integrates thermal shutdown and foldback current limiting (240–450 mA typical), and - unlike standard TLV707 variants - the "A" suffix denotes enhanced electrical specifications per Revision G (June 2023), including tighter dropout voltage tolerances and updated current-limit characterization across output voltage ranges.

Key Specifications

Pinout & Package

TLV707185ADQNR is housed in a 1.0 mm × 1.0 mm DQN (X2SON-4) package with wettable flank terminations for automated optical inspection. The thermal pad is electrically connected to GND and must be soldered to a PCB thermal plane for rated performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F0TESK and AP7361D-18SAG-7, TLV707185ADQNR offers the lowest quiescent current (25 µA), smallest footprint (1.0 mm²), and highest PSRR - making it optimal for miniaturized, battery-critical portable RF systems where enable control and precision 1.85-V output are essential.

Availability

TLV707185ADQNR is available at Aetrix Electronics and suitable for wearable electronics, Bluetooth audio subsystems, and industrial handheld scanners requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.

Supply support for TLV707185ADQNR 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 for industrial, automotive, and personal electronics markets.

The TLV707 series was designed specifically for portable RF applications demanding ultra-low IQ, fast transient response, and minimal solution size - targeting smartphones, wearables, and wireless sensors where battery life and PCB real estate are critical constraints.

FAQ

What is the minimum input voltage required for TLV707185ADQNR to regulate 1.85 V at 150 mA?

The TLV707185ADQNR requires a minimum input voltage of 2.07 V to maintain regulation at 150 mA load, based on its maximum dropout voltage of 220 mV at that current. This headroom allows reliable operation from partially discharged single-cell Li-ion batteries (≥3.0 V nominal) and dual-cell alkaline sources.

Does TLV707185ADQNR include an active pulldown circuit on the output?

No, TLV707185ADQNR does not include an active pulldown circuit. That feature is exclusive to the TLV707P variant (e.g., TLV707185PDQNR). TLV707185ADQNR relies on natural discharge through the load; for rapid output discharge, an external pulldown resistor or dedicated load switch is required.

Can TLV707185ADQNR operate without an output capacitor?

No, TLV707185ADQNR requires a minimum effective output capacitance of 0.1 µF for stability. While it does not require an ESR range like older LDOs, omitting the capacitor causes oscillation and loss of regulation. A 0.22-µF X5R 0402 ceramic capacitor is recommended for robust performance across temperature and bias.

What is the thermal resistance (R_θJA) of TLV707185ADQNR in its DQN package?

The junction-to-ambient thermal resistance (R_θJA) for TLV707185ADQNR in the 1-mm × 1-mm DQN (X2SON-4) package is 208.1°C/W under standard JEDEC JESD51-7 conditions. Achieving lower thermal resistance requires soldering the exposed thermal pad to a ≥40 mm² copper pour with ≥4 thermal vias.

Is TLV707185ADQNR compatible with 1.2-V GPIO enable signals?

Yes, TLV707185ADQNR is compatible with 1.2-V GPIOs: its enable threshold (V_IH) is specified at 0.9 V minimum, well within the high-output voltage range of 1.2-V logic families. No level shifter is needed, simplifying interface design in modern low-voltage SoC platforms.