Texas Instruments TPS7A8300ARGWT

Overview

TPS7A8300ARGWT 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 delivers ultra-low dropout (200 mV max at 2 A), supports input voltages from 1.1 V to 6.5 V (with BIAS), and offers pin-programmable output from 0.8 V to 3.95 V (50-mV steps) for powering noise-sensitive RF and analog circuits in macro RRU and mMIMO systems.

For engineers reviewing the TPS7A8300ARGWT datasheet, TPS7A8300ARGWT pinout, TPS7A8300ARGWT application, or TPS7A8300ARGWT equivalent, key selection criteria include its 4.4 μVRMS output noise, 40 dB PSRR at 500 kHz, open-drain power-good output, adjustable soft-start, and ANY-OUT™ programmability - all critical for SerDes, ADC/DAC, and RF amplifier supply rails where phase noise and jitter must be minimized.

Technical Context

The TPS7A8300ARGWT implements a precision bandgap reference with low-noise error amplifier and PMOS pass transistor architecture, enabling stable 2-A regulation with minimal headroom. Its dual-input design accepts separate BIAS supply to maintain high PSRR and accuracy under LILO conditions (e.g., VIN = 1.2 V, VOUT = 1.0 V).

It integrates remote sensing (SNS pin), feed-forward capacitor support (CFF), and NR/SS pin for simultaneous noise reduction and controlled inrush. The ANY-OUT™ configuration uses six dedicated pins (50-mV resolution) to set output without external resistors, while FB-based adjustable mode supports 0.8–5.2 V with ±1.0% accuracy over line/load/temperature.

Key Specifications

Pinout & Package

TPS7A8300ARGWT is housed in a 3.5 mm × 3.5 mm, 20-pin VQFN package (RGW) with exposed thermal pad. The package supports high-power dissipation via low R_θJB (13.0°C/W) and requires solder connection of the thermal pad to a large ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A8300ARGWT, TPS7A8301ARGWT provides finer 25-mV ANY-OUT resolution at lower voltages but sacrifices maximum output (2.075 V vs. 3.95 V) and RF-grade noise performance; LP5907MFX-3.3/NOPB offers cost-effective simplicity for low-power digital rails but cannot meet the 2-A, 4.4-μVRMS, or LILO requirements of high-performance analog systems.

Availability

TPS7A8300ARGWT is available at Aetrix Electronics and suitable for macro RRU, active antenna systems, and ultrasound scanner designs requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for TPS7A8300ARGWT 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 precision power management ICs.

The TPS7A83A product line was designed specifically for high-performance, noise-sensitive applications-including 5G infrastructure, medical imaging, and test equipment-where ultra-low noise, high PSRR, and LILO capability are mandatory for signal integrity.

FAQ

What is the maximum output current supported by the TPS7A8300ARGWT?

The TPS7A8300ARGWT supports up to 2 A of continuous output current under recommended operating conditions (TJ ≤ 125°C, adequate PCB copper, and proper thermal pad connection). Its internal current limit is 2.8–3.8 A, but sustained operation above 2 A requires careful thermal design due to power dissipation constraints in the 3.5-mm VQFN package.

Does the TPS7A8300ARGWT require an external BIAS supply to operate?

The TPS7A8300ARGWT does not require an external BIAS supply for standard operation (VIN ≥ 1.4 V). However, when VIN drops below 1.4 V - such as in LILO scenarios - connecting a 3.0–6.5 V BIAS supply to pin 12 improves accuracy to ±0.75%, enhances PSRR, and enables stable regulation down to VIN = 1.1 V.

How does the ANY-OUT™ feature work on the TPS7A8300ARGWT?

The TPS7A8300ARGWT uses pins 5–11 (labeled 50mV, 100mV, 200mV, 400mV, 800mV, 1.6V) to set output voltage in 50-mV increments from 0.8 V to 3.95 V. Grounding specific combinations selects the target voltage; connecting to SNS increases resolution but narrows the range. Pins left floating default to 0.8 V.

What is the purpose of the SNS pin on the TPS7A8300ARGWT?

The SNS (sense) pin on the TPS7A8300ARGWT enables remote voltage sensing by connecting to the load side of the output trace. This compensates for IR drop across PCB traces, ensuring the regulated voltage at the load matches the programmed value - especially critical in ANY-OUT™ mode with high-current, long-trace layouts.

Can the TPS7A8300ARGWT be used in adjustable mode with external resistors?

Yes, the TPS7A8300ARGWT supports adjustable operation via the FB pin using an external resistor divider. It achieves 0.8–5.2 V output with ±1.0% accuracy (±0.75% with BIAS), and TI recommends R1 = 12.1 kΩ and R2 = 160 kΩ to optimize PSRR and noise performance while maintaining feedback network accuracy.