1 Features
1• Low Dropout: 150 mV (typ) at 4 A
• 1% (max) Accuracy Over Line, Load, and
Temperature
• Output Voltage Noise:
– 4.4 μVRMS at 0.8-V Output
– 8.4 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
• Operating Temperature Range:
–40ºC to +125°C
• 3.5-mm × 3.5-mm, 20-Pin VQFN

2 Applications
• Digital Loads: SerDes, FPGAs, and DSPs
• Instrumentation, Medical, and Audio
• High-Speed Analog Circuits:
– VCO, ADC, DAC, and LVDS
• Imaging: CMOS Sensors and Video ASICs
• Test and Measurement

3 Description
The TPS7A85 is a low-noise (4.4 μVRMS), low-dropout
linear regulator (LDO) capable of sourcing 4 A with
only 240 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
TPS7A85 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 TPS7A85
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 TPS7A85 ensure optimal system
performance.
The versatility of the TPS7A85 makes the device a
component of choice for many demanding
applications.