TPS7A47-Q1 Datasheet, PDF (1/25 Pages) Texas Instruments – 35-V, 1-A, 4.2-uVRMS, RF LDO Voltage Regulator

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TPS7A47-Q1
SBVS118 – AUGUST 2017
TPS7A47-Q1 35-V, 1-A, 4.2-µV_RMS, RF LDO Voltage Regulator
1 Features
2 Applications
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4A
• Input Voltage: 3 V to 35 V
• Operating Junction Temperature: –40°C to
+145°C
• Output Voltage Noise:
4.2 µV_RMS (10 Hz–100 kHz)
• Power-Supply Rejection Ratio:
– 82 dB (100 Hz)
– ≥ 55 dB (10 Hz–10 MHz)
• Two Output Voltage Modes:
– ANY-OUT™ Version (User-Programmable
Output via PCB Layout):
– Output Voltage: 1.4 V to 20.5 V
– Adjustable Operation:
– Output Voltage: 1.4 V to 34 V
• Output Current: 1 A
• Thermal resistance: θ_JA = 31.1°C/W
• Dropout Voltage: 307 mV at 1 A
• CMOS Logic Level-Compatible Enable Pin
• Built-In Fixed Current Limit and
Thermal Shutdown
• Voltage-Controlled Oscillators (VCO)
• Rx, Tx, and PA Circuitry
• Automotive Infotainment and Cluster
• Supply Rails for Operational Amplifiers,
DACs, ADCs, and Other High-Precision Analog
Circuitry
3 Description
The TPS7A47-Q1 device is a positive voltage (35 V),
ultra-low-noise (4.2 µV_RMS) low-dropout linear
regulator (LDO) capable of sourcing a 1-A load.
The TPS7A47-Q1 output voltage can be configured
with a user-programmable printed circuit board (PCB)
layout (up to 20.5 V), or adjustable (up to 34 V) with
external feedback resistors.
The TPS7A47-Q1 is designed with bipolar technology
primarily for high-accuracy, high-precision
instrumentation applications where clean voltage rails
are critical to maximize system performance. This
feature makes the device ideal for powering
operational amplifiers, analog-to-digital converters
(ADCs), digital-to-analog converters (DACs), and
other high-performance analog circuitry.
In addition, the TPS7A47-Q1 is ideal for post dc-dc
converter regulation. By filtering out the output
voltage ripple inherent to dc-dc switching
conversions, maximum system performance is
ensured in sensitive instrumentation, audio, and RF
applications.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A47-Q1
VQFN (20)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
8V
VIN
EN1
Simplified Schematic
IN
EN TPS7A47-Q1 ^OUT
5V
VCC1
High-Performance DAC
VIN
IN
3.3 V
EN1
EN TPS7A47-Q1 OUT
VDD
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.