Texas Instruments TPS7A8300ARGWR

Overview

TPS7A8300ARGWR from Texas Instruments is a 2-A, high-accuracy (±0.75%), low-noise (4.4 μVRMS) LDO regulator in a 20-pin VQFN (RGW) package. It supports adjustable output (0.8–5.2 V) and ANY-OUT™ programmable operation (0.8–3.95 V), with max dropout of 200 mV at 2 A and 40 dB PSRR at 500 kHz. It powers noise-sensitive RF and data-converter circuits in macro remote radio units and ultrasound scanners.

For engineers reviewing the TPS7A8300ARGWR datasheet, TPS7A8300ARGWR pinout, TPS7A8300ARGWR application, or TPS7A8300ARGWR equivalent, key selection criteria include output accuracy over temperature, ultra-low noise performance, BIAS-supply-enabled LILO operation (VIN as low as 1.1 V), and open-drain power-good signaling for system sequencing.

Technical Context

The TPS7A8300ARGWR integrates a precision bandgap reference, low-noise error amplifier, and high-current pass element optimized for stability with ceramic output capacitors ≥22 μF. Its ANY-OUT™ architecture uses six dedicated voltage-setting pins (50-mV resolution) to configure fixed outputs without external resistors.

It features dual-input capability: main IN supply (1.1–6.5 V with BIAS, 1.4–6.5 V without) and separate BIAS pin (3.0–6.5 V) that improves PSRR and reduces dropout under low-VIN conditions. The NR/SS pin enables simultaneous noise reduction and soft-start via external capacitor.

Key Specifications

Pinout & Package

TPS7A8300ARGWR 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 PCB-level thermal vias to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A8300ARGWR, TPS7A8301ARGWR offers finer low-voltage resolution but lacks 3.3-V/5-V compatibility, while TPS7A4700RGWR trades current and programmability for broader input range and marginally lower noise - making TPS7A8300ARGWR uniquely suited for 2-A, multi-rail, LILO RF power delivery.

Availability

TPS7A8300ARGWR is available at Aetrix Electronics and suitable for macro remote radio units, ultrasound scanners, active antenna systems, and lab instrumentation requiring stable component supply with guaranteed long-term availability and full traceability.

Supply support for TPS7A8300ARGWR 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, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The TPS7A83A product line was designed specifically to address ultra-low-noise, high-accuracy power needs in RF infrastructure and high-performance data acquisition - emphasizing LILO operation, programmable outputs, and jitter-critical PSRR performance.

FAQ

What is the maximum dropout voltage of the TPS7A8300ARGWR at full 2-A load?

The TPS7A8300ARGWR has a maximum dropout voltage of 200 mV at 2 A load under standard test conditions (VIN = 1.4 V or VOUT + 0.4 V, VFB = 0.8 V −3%). With BIAS applied, dropout drops to 125 mV at 1.1-V input - enabling true LILO operation critical for modern RF power efficiency. This specification is verified across temperature and process corners per TI's SBVS304B datasheet Section 7.6.

Does the TPS7A8300ARGWR require an external feedback resistor network for all configurations?

No - the TPS7A8300ARGWR supports both ANY-OUT™ pin-programmable operation (0.8–3.95 V in 50-mV steps) and traditional adjustable mode using external resistors (0.8–5.2 V). When using ANY-OUT, no external resistors are needed; FB pin is left unconnected. Resistor-based adjustment is only required for outputs above 3.95 V or non-standard voltages within the 0.8–5.2 V range.

How does the BIAS pin improve performance in the TPS7A8300ARGWR?

The BIAS pin on the TPS7A8300ARGWR supplies a clean auxiliary voltage (3.0–6.5 V) to the internal reference and error amplifier, improving DC accuracy (±0.75% vs. ±1.0%) and AC performance (PSRR, noise) when main input VIN ≤ 2.2 V. It enables stable 2-A operation down to 1.1-V input - a capability absent in non-BIAS LDOs - and requires only a 1-μF capacitor to GND.

What is the function of the SNS pin on the TPS7A8300ARGWR?

On the TPS7A8300ARGWR, the SNS (sense) pin provides remote voltage sensing for improved load regulation. It connects to the load side of the output trace only when ANY-OUT mode is used - allowing the regulator to compensate for IR drop in PCB traces. In adjustable mode with external resistors, SNS is left floating. Misconnecting SNS in adjustable mode can cause output voltage instability.

Can the TPS7A8300ARGWR be used without connecting the NR/SS pin?

Yes - the NR/SS pin on the TPS7A8300ARGWR is optional. Leaving it open disables both noise reduction and soft-start functions, resulting in faster startup but higher output voltage noise and potential inrush current spikes. For most noise-sensitive applications (e.g., RF, medical imaging), TI recommends a 10-nF capacitor from NR/SS to GND to optimize AC performance and control turn-on slew rate.