TI TPS7A5401RPSR

The TPS7A54 is a low-noise (4.4μV_RMS), low-dropout linear regulator (LDO) capable of delivering 4A with a maximum dropout voltage of only 175mV. The output voltage is adjustable from 0.8V to 5.1V via an external resistor divider.

The TPS7A54 combines low noise (4.4μV_RMS), high PSRR, and high output current capability, making it ideal for powering noise-sensitive components in applications such as radar power supplies and infotainment systems. Its excellent performance suppresses power supply-induced phase noise and clock jitter, making it well-suited for powering RF amplifiers, radar sensors, and chipsets. The high performance and output capability of up to 5.0V make it particularly suitable for RF amplifier applications.

For digital loads requiring low-input and low-output (LILO) voltage operation — such as ASICs, FPGAs, and DSPs — the TPS7A54 delivers outstanding system performance through its exceptional accuracy (0.5% over load and temperature range), remote sensing, superior transient response, and soft-start functionality.

As an adjustable regulator, the TPS7A54 enables versatile designs suitable for analog loads such as VCOs, ADCs, DACs, and imaging sensors, as well as digital loads such as SerDes, FPGAs, and DSPs.

• Maximum accuracy of 0.5% over line, load, and temperature range
• Output voltage noise: 4.4μV_RMS
• Low dropout: 175mV at 4A (maximum, with bias)
• PSRR: 40dB at 500kHz
• Input voltage range: Without bias: 1.4V to 6.5V; With bias: 1.1V to 6.5V
• Adjustable output voltage range: 0.8V to 5.1V
• Adjustable soft-start inrush control
• Open-drain power good (PG) output
• 2.2mm×2.5mm 12-pin VQFN package

• Macro Remote Radio Unit (RRU)
• Outdoor Backhaul Unit
• Active Antenna System mMIMO (AAS)
• Ultrasonic Scanner
• Lab and Field Instruments
• Sensors, Imaging and Radar