TPS7A54-Q1 Datasheet, PDF (1/28 Pages) Texas Instruments – Automotive-Grade 4-A, High-Accuracy, Low-Noise, LDO Voltage Regulator

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TPS7A54-Q1
SBVS312 – SEPTEMBER 2017
TPS7A54-Q1 Automotive-Grade 4-A, High-Accuracy, Low-Noise, LDO Voltage Regulator
1 Features
•1 AEC-Q100 Qualified for Automotive Applications
– Temperature Grade 1: –40°C ≤ T_A ≤ +125°C
– HBM ESD Classification Level 2
– CDM ESD Classification Level C4A
• Low Dropout: 240 mV (max) at 4 A With BIAS
• Output Voltage Noise: 4.4 µV_RMS
• 1% (max) Accuracy Over Line, Load, and
Temperature With BIAS
• Extended Junction Temperature (T_J) Range:
–40°C to +140°C
• Input Voltage Range:
– Without BIAS: 1.4 V to 6.5 V
– With BIAS: 1.1 V to 6.5 V
• Adjustable Operation:
– Output Voltage Range: 0.8 V to 5.1 V
• Power-Supply Ripple Rejection:
– 40 dB at 500 kHz
• Excellent Load Transient Response
• Adjustable Soft-Start Inrush Control
• Open-Drain, Power-Good (PG) Output
• 3.5-mm × 3.5-mm, 20-Pin VQFN Package
2 Applications
• RF and Radar Power in Automotive Applications
• Automotive ADAS ECUs
• Telematic Control Units
• Infotainment and Clusters
• High-Speed Interfaces (PLL and VCO)
3 Description
The TPS7A54-Q1 is a low-noise (4.4 µV_RMS), low-
dropout linear regulator (LDO) capable of sourcing
4 A with only 240 mV of maximum dropout. The
device output voltage is adjustable from 0.8 V to 5.1
V using an external resistor divider.
The combination of low-noise (4.4 µV_RMS), high-
PSRR, and high output current capability makes the
TPS7A54-Q1 ideal to power noise-sensitive
components such as those found in high-speed
communications, radar power, infotainment
applications. The high performance of this device
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
5.0-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 (1% over
load and temperature), remote sensing, excellent
transient performance, and soft-start capabilities of
the TPS7A54-Q1 provides optimal system
performance.
The versatility of the TPS7A54-Q1 makes the device
a component of choice for many demanding
applications.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A54-Q1
VQFN (20)
3.50 mm × 3.50 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
Powering Digital Loads
Bias Supply
Input Supply
EN Signal
BIAS
IN
TPS7A54-Q1 OUT
EN
PG
VDD
DSP, ASIC,
GPIO _{or FPGA}
Copyright © 2017, Texas Instruments Incorporated
Powering RF Components
Input Supply
TPS7A54-Q1
IN
OUT
PG
VCC
EN
Radar
Sensor System
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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.