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TPS7A4700RGWR

TITPS7A4700RGWR

Texas Instruments
Linear Voltage Regulator IC Positive Adjustable 1 Output 1A 20-VQFN (5x5)
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Overview

The TPS7A4700RGWR is a positive, adjustable linear voltage regulator capable of supplying up to 1A of output current. It features a wide input voltage range from 3V to 36V and offers a low-noise output, making it suitable for sensitive analog and RF applications. This regulator includes built-in protection features such as over-current and over-temperature shutdown.

Why Choose This Part

Engineers choose the TPS7A4700RGWR for its exceptionally low noise (4.17 nV/rtHz) and high PSRR (78dB at 1kHz), which are critical for powering noise-sensitive analog and RF circuitry. Its ability to handle up to 1A output current and a broad input voltage range of 3V to 36V offers design flexibility. The integrated protection features enhance system reliability and robustness.

Applications

RF Transceivers and Modules
The low noise output of 4.17 nV/rtHz at 1kHz provides a clean power supply for sensitive RF components, minimizing performance degradation from power supply ripple.
Audio Amplifiers and DACs
Its stable and clean power delivery helps maintain high fidelity in audio circuits by reducing power supply noise that could otherwise be coupled into the audio signal.
Precision Instrumentation
The adjustable output voltage and low quiescent current make it ideal for powering sensors, ADCs, and other analog front-end components where stable and precise voltage is critical.
Test and Measurement Equipment
Provides a reliable and adjustable power source for various sub-circuits within test equipment, contributing to accurate and repeatable measurements.
Post-Regulation in Switching Power Supplies
Can be used to filter and stabilize the output of a switching power supply, providing a cleaner voltage rail for noise-sensitive loads.

Key Specifications

PSRR 78dB (1kHz)
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 20-VQFN Exposed Pad
Control Features Enable
Current - Output 1A
Protection Features Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC
Voltage - Input (Max) 35V
Voltage Dropout (Max) 0.45V @ 1A
Current - Supply (Max) 6.1 mA
Voltage - Output (Max) 20.5V
Supplier Device Package 20-VQFN (5x5)
Current - Quiescent (Iq) 1 mA
Voltage - Output (Min/Fixed) 1.4V

Getting Started

To get started with the TPS7A4700RGWR, consult the datasheet for recommended PCB layout guidelines, especially for managing thermal performance in the 20-VQFN package. The output voltage is user-programmable via external resistors, requiring careful selection to achieve the desired output between 1.4V and 20.5V. Texas Instruments provides evaluation modules for faster prototyping and testing.

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