Description:

The TPS7A52 is a low-noise (4.4µVRMS), low-dropout linear regulator (LDO) that delivers 2A of current with a maximum dropout of only 125mV. The device’s output voltage is adjustable via an external resistor divider from 0.8V to 5.2V. Combining low noise (4.4µVRMS), high PSRR, and high output current capability, the TPS7A52 is well-suited for powering noise-sensitive components in high-speed communications, video, medical, or test and measurement applications. The device’s high performance suppresses phase noise and clock jitter from the power supply, making it ideal for powering high-performance serializers and deserializers (SerDes), analog-to-digital converters (ADCs), and digital-to-analog converters (DACs). With its high performance and output capability up to 5.2V, the TPS7A52 is especially suitable for RF amplifiers. For digital loads such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs) that require low input and low output (LILO) voltage operation, the TPS7A52 offers excellent system performance with its high accuracy (0.75% over load and temperature), remote sensing, excellent transient performance, and soft-start functionality. As an adjustable regulator, the TPS7A52 enables versatile design, making it suitable for analog loads such as voltage-controlled oscillators (VCOs), ADCs, DACs, and imaging sensors, as well as digital loads such as SerDes, FPGAs, and DSPs.

Features:

Input voltage range:

– Without bias: 1.4V to 6.5V

– With bias: 1.1V to 6.5V

Adjustable output voltage range: 0.8V to 5.2V

Low dropout: 125mV (max, with bias) at 2A

Output voltage noise: 4.4µVRMS

Maximum accuracy of 1% over line, load, and temperature, with bias

Power supply rejection: 40dB at 500kHz

Adjustable soft-start for inrush control

Open-drain power-good (PG) output

2.2mm × 2.5mm 12-pin VQFN package

Applications:

Macro RRU

Microwave antennas

Active antenna system mMIMO (AAS)

Ultrasound scanners

Laboratory and field instrumentation

Sensors, imaging, and radar