1 Features

• Low dropout: 180 mV (max) at 3 A

• 1% (max) accuracy over line, load, and

temperature

• Output voltage noise:

– 4.4 μVRMS at 0.8-V output

– 7.7 μVRMS at 5.0-V output

• Input voltage range:

– Without BIAS: 1.4 V to 6.5 V

– With BIAS: 1.1 V to 6.5 V

• ANY-OUT™ operation:

– Output voltage range: 0.8 V to 3.95 V

• Adjustable operation:

– Output voltage range: 0.8 V to 5.0 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

• Stable with a 47-μF or larger ceramic output

capacitor

• 3.5-mm × 3.5-mm, 20-pin VQFN

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 TPS7A84 is a low-noise (4.4 μVRMS), low-dropout

linear regulator (LDO) capable of sourcing 3 A with

only 180 mV of maximum dropout. The device output

voltage is pin-programmable from 0.8 V to 3.95 V

and adjustable from 0.8 V to 5.0 V using an external

resistor divider.

The combination of low-noise (4.4 μVRMS), high

PSRR, and high output current capability makes the

TPS7A84 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 TPS7A84 limits

power-supply-generated phase noise and clock

jitter, making this device ideal for powering highperformance

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

5.0-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

load and temperature), remote sensing, excellent

transient performance, and soft-start capabilities of

the TPS7A84 ensure optimal system performance.

The versatility of the TPS7A84 makes the device

a component of choice for many demanding

applications.