Texas Instruments TPS7A8301ARGWR

Overview

TPS7A8301ARGWR from Texas Instruments is a 2-A, high-accuracy (±1.25% over load/temperature), low-noise (4.4 μV_RMS) LDO regulator in a 20-pin VQFN (RGW) package. It supports adjustable output from 0.5 V to 5.2 V or ANY-OUT™ programmable operation from 0.5 V to 2.075 V with 25-mV resolution, and features open-drain power-good (PG), remote sense (SNS), and BIAS-supplied operation down to 1.1 V input - ideal for powering noise-sensitive RF amplifiers and high-speed SerDes in macro RRU and mMIMO base stations.

For engineers reviewing the TPS7A8301ARGWR datasheet, TPS7A8301ARGWR pinout, TPS7A8301ARGWR application, or TPS7A8301ARGWR equivalent, key selection criteria include its 0.5-V minimum output capability, 210-mV max dropout at 2 A, 4.4-μV_RMS noise performance, 40-dB PSRR at 500 kHz, and support for LILO (low-input, low-output) biasing - all critical for precision analog, medical imaging, and high-frequency communications power rails.

Technical Context

The TPS7A8301ARGWR implements a high-bandwidth error amplifier with remote sensing (SNS pin) and dual-path reference architecture enabling stable regulation under fast load transients. Its ANY-OUT™ configuration uses six dedicated pins (25-mV resolution) to set output voltage without external resistors, while the FB pin supports standard adjustable operation with external resistor divider.

Bias supply (BIAS pin) enables enhanced dc/ac performance below 2.2 V input by reducing internal pass transistor stress; NR/SS pin controls soft-start timing and reference noise filtering via external capacitor; PG pin provides active-high power-good indication with 5% hysteresis and 80–91% V_OUT threshold.

Key Specifications

Pinout & Package

TPS7A8301ARGWR is housed in a 3.5 mm × 3.5 mm, 20-pin VQFN package (RGW) with exposed thermal pad connected internally to GND. The package supports high-power dissipation (R_θJA = 33.4°C/W) and requires low-impedance PCB grounding for optimal thermal and noise performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A8300ARGWR, the TPS7A8301ARGWR enables lower-voltage operation critical for next-gen processors, while TPL7407LADGQR serves entirely different low-current digital functions - neither offers pin compatibility or identical performance envelope.

Availability

TPS7A8301ARGWR is available at Aetrix Electronics and suitable for macro RRU, ultrasound scanner, and active antenna system (AAS) mMIMO applications requiring stable component supply, high-volume production readiness, and long-term industrial lifecycle support.

Supply support for TPS7A8301ARGWR 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 connectivity technologies, with decades of expertise in high-performance power management ICs.

The TPS7A83A family was designed specifically for noise-sensitive, high-current applications in wireless infrastructure, medical imaging, and test equipment - prioritizing ultra-low noise, high PSRR, and LILO operation without sacrificing accuracy or thermal robustness.

FAQ

What is the minimum input voltage supported by the TPS7A8301ARGWR?

The TPS7A8301ARGWR supports an input voltage as low as 1.1 V when the BIAS pin is supplied with ≥3.0 V. Without BIAS, the minimum input is 1.4 V. This LILO capability allows the TPS7A8301ARGWR to operate efficiently in battery-powered or ultra-low-voltage FPGA core domains where headroom is constrained.

Does the TPS7A8301ARGWR require external resistors to set output voltage?

No - the TPS7A8301ARGWR supports ANY-OUT™ programmable output from 0.5 V to 2.075 V using six dedicated pins (25-mV resolution), eliminating external resistors. However, for outputs beyond 2.075 V (up to 5.2 V), the TPS7A8301ARGWR requires an external resistor divider connected to the FB pin, as specified in the datasheet.

How does the BIAS pin improve performance of the TPS7A8301ARGWR?

The BIAS pin supplies an auxiliary voltage (3.0–6.5 V) that powers the internal reference and error amplifier independently of the main input rail. This improves both DC accuracy (±1.1% vs. ±1.25%) and AC performance - especially PSRR and noise - when VIN ≤ 2.2 V, making the TPS7A8301ARGWR uniquely suited for LILO applications.

Can the TPS7A8301ARGWR be used with remote sensing (SNS) in adjustable mode?

Yes - the SNS pin must be connected to the load side of the output trace when using either ANY-OUT™ or adjustable (FB-based) configurations. In adjustable mode, SNS compensates for voltage drop across PCB traces and connectors, ensuring the TPS7A8301ARGWR maintains ±1.25% accuracy at the actual load point, not just at the OUT pin.

What is the maximum dropout voltage of the TPS7A8301ARGWR at full 2-A load?

The TPS7A8301ARGWR has a maximum dropout voltage of 210 mV at 2 A when V_OUT = 0.5 V and V_IN = 1.4 V. At higher output voltages (e.g., 5.0 V), dropout increases to 300 mV under the same conditions. This low dropout enables high efficiency in thermally constrained designs using the RGW package.