1 Features

• Low dropout: 180 mV (maximum) at 3 A with BIAS

• 0.75% (maximum) accuracy over line, load, and

temperature with BIAS

• Output voltage noise: 4.4 μVRMS

• Input voltage range:

– Without BIAS: 1.4 V to 6.5 V

– With BIAS: 1.1 V to 6.5 V

• TPS7A8400A output voltage range:

– Adjustable operation: 0.8 V to 5.15 V

– ANY-OUT™ operation: 0.8 V to 3.95 V

• TPS7A8401A output voltage range:

– Adjustable operation: 0.5 V to 5.15 V

– ANY-OUT™ operation: 0.5 V to 2.075 V

• Power-supply ripple rejection:

– 40 dB at 500 kHz

• Excellent load transient response

• Adjustable soft-start in-rush control

• Open-drain power-good (PG) output

2 Applications

• Macro remote radio units (RRU)

• Outdoor backhaul units

• Active antenna system mMIMO (AAS)

• Ultrasound scanners

• Lab and field instrumentation

• Sensor, imaging, and radar

3 Description

The TPS7A84A is a low-noise, low-dropout linear

regulator (LDO) capable of sourcing 3 A with only

180-mV of maximum dropout. The device is offered in

two output voltage ranges. The TPS7A8400A output

voltage is pin-programmable from 0.8 V to 3.95 V, with

a 50-mV resolution, and adjustable from 0.8 V to 5.15

V using an external resistor divider. The TPS7A8401A

output voltage is pin-programmable from 0.5 V to

2.075 V, with a 25-mV resolution, and adjustable from

0.5 V to 5.15 V using an external resistor divider.

The combination of low-noise, high-PSRR, and high

output-current capability makes the TPS7A84A ideal

to power noise-sensitive components such as those

found in high-speed communications, video, medical,

or test and measurement applications. The high

performance of the TPS7A84A limits power-supplygenerated

phase noise and clock jitter, making this

device ideal for powering high-performance serializer

and deserializer (SerDes), analog-to-digital converters

(ADCs), digital-to-analog converters (DACs), and RF

components. Specifically, RF amplifiers benefit from

the high-performance and

> 5-V output capability of the device.

For digital loads [such as application-specific

integrated circuits (ASICs), field-programmable gate

arrays (FPGAs), and digital signal processors (DSPs)]

requiring low-input voltage, low-output (LILO) voltage

operation, the exceptional accuracy (0.75% over line,

load, and temperature), remote sensing, excellent

transient performance, and soft-start capabilities of

the TPS7A84A ensure optimal system performance.

The versatility of the TPS7A84A makes the device a

component of choice for many demanding

applications.