TPS7A8300ARGWR

Core parameters

Features

Low noise output and high power supply ripple rejection capability

The TPS7A8300ARGWR has a typical output noise of 6µVRMS and high power supply ripple rejection, reducing the transmission of input power supply noise to the output. This feature is suitable for analog circuits, clock circuits, RF modules, and high-speed communication systems that are sensitive to power supply purity, helping to control phase noise and clock jitter caused by power supply noise.

Ultra-low dropout pressure and 2A output capability

This device supports a maximum output current of 2A, with a maximum dropout voltage of 125mV under a 2A load. The low dropout voltage helps maintain regulation when the input-output voltage difference is small, making it suitable for powering low-voltage processors and other high-current loads. As a linear regulator, its power consumption is still closely related to the input-output voltage difference and load current, requiring evaluation of thermal conditions during design.

Programmable soft start and surge current control

This device offers a soft-start function with an externally programmable capacitor, which controls the output voltage to gradually rise during the startup phase, reducing peak inrush current at power-on. For loads such as FPGAs, DSPs, and processors, this helps reduce transient interference during power-on and improves power-on management of multi-rail systems.

Power status monitoring and enable control

The TPS7A8300 is equipped with a Power Good (PG) output and an Enable (EN) control function. The PG signal can be used to indicate whether the output power supply has reached the specified normal state, which facilitates the system controller to perform power timing management; the EN pin supports external logic control to turn the regulator on and off.

Typical application scenarios

FPGA and processor power supply

Low-voltage power supply circuits suitable for FPGAs, DSPs, and high-performance processors provide stable voltage to digital cores or other power rails that meet output voltage and current requirements. The soft-start function is also suitable for digital systems requiring controlled power-up processes.

High-speed communication equipment

In high-speed communication equipment, power supply noise can affect clock quality and high-speed signal chain performance. The TPS7A8300’s low noise and high PSRR characteristics make it suitable for powering sensitive loads in SerDes-related circuits, clock devices, and communication modules.

ADC and DAC analog signal chain

High-precision ADCs, DACs, and related analog front-ends typically have certain requirements for power supply noise and voltage stability. This LDO can be used on relevant analog power rails, and its performance depends on load characteristics, PCB layout, input power quality, and external filtering design.

Radio frequency and wireless communication circuits

This device can be used for power supply regulation in RF amplifiers and other low-voltage RF circuits. Low output noise helps reduce power supply-introduced interference, but it still needs to be evaluated in conjunction with the RF band, load current, PSRR frequency response, and thermal dissipation during design.

Performance Comparison

The following comparison is between the TPS7A8300 and TI’s subsequent model, the TPS7A83A. Both are 2A low-noise LDOs, but their specific parameters and versions differ.

Manufacturer Profile: Texas Instruments (TI)

Texas Instruments is a semiconductor company that provides analog integrated circuits, embedded processors, and power management solutions. Its products are widely used in industrial, automotive, communications, and consumer electronics industries.

The TPS7A8300 belongs to TI’s low-noise LDO product family, primarily designed for low-voltage, high-current applications and those sensitive to power supply noise. This series supports electronic system designs with high power integrity requirements through features such as low dropout regulation, precise output regulation, and soft-start.

Why choose TPS7A8300ARGWR?

• Low-noise output: Typical output noise is 6µVRMS, suitable for sensitive analog and high-speed signal circuits.
• 2A output capability: It can meet the power supply requirements of various low-voltage, high-current loads.
• Low dropout design: The maximum dropout voltage is 125mV under a 2A load, which helps to reduce the input-output voltage difference.
• High-precision voltage regulation: 1% output accuracy within the specified circuit, load, and temperature range.
• Programmable soft start: Helps control inrush current during startup.
• Power status monitoring: Supports system power timing management via the PG pin.
• Compact package: Available in a 5mm × 5mm VQFN-20 package, suitable for space-constrained power management circuits.

Frequently Asked Questions (FAQ)

Q1: What type of device is the TPS7A8300ARGWR?

The TPS7A8300ARGWR is a low-noise, ultra-low dropout linear regulator from TI, with a maximum output current of 2A. It is suitable for power management of FPGAs, processors, high-speed communications, RF and precision analog circuits.

Q2: What is the minimum input voltage for the TPS7A8300ARGWR?

When using an independent BIAS power supply, the input voltage range can be as low as 1.1V; when not using an independent BIAS power supply, the input voltage range is 1.4V to 6.5V. The specific design should simultaneously meet the BIAS voltage, input-output voltage difference, and load requirements.

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