TPS7A83A Datasheet, PDF (1/46 Pages) Texas Instruments – 2-A, High-Accuracy (0.75%), Low-Noise (4.4 uVRMS) LDO Regulator

Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
TPS7A83A
SBVS304 – JUNE 2017
TPS7A83A 2-A, High-Accuracy (0.75%), Low-Noise (4.4 µV_RMS) LDO Regulator
1 Features
•1 Low Dropout: 200 mV (max) at 2 A
• 0.75% (max) Accuracy Over Line, Load, and
Temperature With BIAS
• Output Voltage Noise:
– 4.4 µV_RMS at 0.8-V Output
– 7.7 µV_RMS at 5.2-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 5.2 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 22-µF or Larger Ceramic Output
Capacitor
• θ_JC = 3.4°C/W
• 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 TPS7A83A device is a low-noise (4.4 µV_RMS),
low-dropout, linear regulator (LDO) capable of
sourcing 2 A with only 200 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 5.2 V
using an external resistor divider.
The combination of low noise (4.4 µV_RMS), high
PSRR, and high output current capability makes the
TPS7A83A 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 TPS7A83A limits power-supply-generated 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 5.2-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 TPS7A83A ensure optimal system
performance.
The versatility of the TPS7A83A makes the device a
component of choice for many demanding
applications.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (nom)
TPS7A83A
VQFN (20)
3.50 mm × 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Powering RF Components
TPS7A83A
Input Supply
IN
OUT
PG
VCC
EN
IQ Modulators
TRF372017
TRF3722
VCC
IQ Demodulators
TRF371125
TRF371135
Typical Application Circuit
Bias
Supply
CBIAS
VIN
CIN
CNR/SS
IN
EN
BIAS
PG
NR/SS
1.6 V
800 mV
400 mV
200 mV
100 mV
50 mV
TPS7A83A
GND
OUT
SNS
FB
RPG
CFF
COUT
3.3 VOUT
To Load
Copyright © 2017, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.