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TPS7A4700 Datasheet(PDF) 1 Page - Texas Instruments

Part # TPS7A4700
Description  36-V, 1-A, 4-VRMS, RF LDO Voltage Regulator
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS7A4700 Datasheet(HTML) 1 Page - Texas Instruments

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TPS7A47xx
RF LDO
Amplifier
TPS7A33
Negative-Voltage
Regulator
Product
Folder
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Buy
Technical
Documents
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Software
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TPS7A4700, TPS7A4701
SBVS204F – JUNE 2012 – REVISED SEPTEMBER 2014
TPS7A470x 36-V, 1-A, 4-µVRMS, RF LDO Voltage Regulator
1 Features
3 Description
The TPS7A47 is a family of positive voltage (+36 V),
1
Input Voltage Range: +3 V to +36 V
ultralow-noise (4 µVRMS) low-dropout linear regulators
Output Voltage Noise:
(LDO) capable of sourcing a 1-A load.
4 µVRMS (10 Hz, 100 kHz)
The
TPS7A4700
output
voltages
are
user-
Power-Supply Ripple Rejection:
programmable (up to 20.5 V) using a printed circuit
82 dB (100 Hz)
board (PCB) layout without the need of external
resistors or feed-forward capacitors, thus reducing
≥ 55 dB (10 Hz, 10 MHz)
overall component count.
Two Output Voltage Modes:
The TPS7A4701 output voltage can be configured
ANY-OUT™ Version (User-Programmable
with a user-programmable PCB layout (up to 20.5 V),
Output via PCB Layout):
or adjustable (up to 34 V) with external feedback
No External Feedback Resistors or Feed-
resistors.
Forward Capacitors Required
The TPS7A47 is designed with bipolar technology
Output Voltage Range: +1.4 V to +20.5 V
primarily
for
high-accuracy,
high-precision
Adjustable Version (TPS7A4701 only):
instrumentation applications where clean voltage rails
Output Voltage Range: +1.4 V to +34 V
are critical to maximize system performance. This
feature
makes
the
device
ideal
for
powering
Output Current: 1 A
operational amplifiers, analog-to-digital converters
Dropout Voltage: 307 mV at 1 A
(ADCs), digital-to-analog converters (DACs), and
CMOS Logic Level-Compatible Enable Pin
other high-performance analog circuitry in critical
applications such as medical, radio frequency (RF),
Built-In Fixed Current Limit and
and test-and-measurement.
Thermal Shutdown
Available in High-Performance Thermal Package:
In addition, the TPS7A47 is ideal for post dc-dc
converter regulation. By filtering out the output
5-mm × 5-mm QFN
voltage
ripple
inherent
to
dc-dc
switching
Operating Temperature Range:
conversions,
maximum
system
performance
is
–40°C to 125°C
ensured
in
sensitive
instrumentation,
test-and-
measurement, audio, and RF applications.
2 Applications
For applications where positive and negative low-
Voltage-Controlled Oscillators (VCO)
noise rails are required, consider TI's TPS7A33 family
Frequency Synthesizers
of
negative
high-voltage,
ultralow-noise
linear
regulators.
Test and Measurement
Instrumentation, Medical, and Audio
Device Information(1)
RX, TX, and PA Circuitry
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Supply Rails for Operational Amplifiers,
TPS7A470x
VQFN (20)
5 mm × 5 mm
DACs, ADCs, and Other High-Precision Analog
(1) For all available packages, see the orderable addendum at
Circuitry
the end of the datasheet.
Post DC-DC Converter Regulation and
Ripple Filtering
Base Stations and Telecom Infrastructure
+12-V and +24-V Industrial Buses
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.


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