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.