1 Features
• AEC-Q100 Qualified for Automotive Applications
– Temperature Grade 1: -40oC ≤ TA≤ +125oC
• Input voltage range:
– Without BIAS: 1.1V to 6.0V
– With BIAS: 0.7V to 6.0V
• Output voltage noise: 2.45μVRMS
• 1% (max) accuracy over line, load, and
temperature
• Low dropout: 75mV at 5A
• Power-supply rejection ratio (5A):
– 100dB at 1kHz
– 78dB at 10kHz
– 60dB at 100kHz
– 36dB at 1MHz
• Superior load transient response:
– ±2mV with a 100mA to 5A load step
• Adjustable output voltage with one resistor:
– Adjustable output voltage range: 0.5V to 5.2V
• Adjustable soft-start inrush control
• BIAS rail:
– Internal charge pump or 3V to 11V external rail
– Internal charge pump can be disabled
• Open-drain, power-good (PG) output
• Package: 3mm × 3mm, 16-pin WQFN
– EVM RθJA: 21.9°C/W

2 Applications
• High-performance compute
• Automotive radar
• Domain gateway
• Zone control module

3 Description
The TPS7A57-Q1 is a low-noise (2.45μVRMS),
ultra-low-dropout linear regulator (LDO) capable of
sourcing 5A with only 75mV of dropout, independently
of the output voltage. The device output voltage
is adjustable from 0.5V to 5.2V using a single
external resistor. The combination of low noise,
high PSRR (36dB at 1MHz), and high outputcurrent
capability makes the TPS7A57 designed
for powering noise-sensitive components (such as
RF amplifiers, radar sensors, SERDES and analog
chipsets) found in radar power, communication, and
imaging applications.
Digital loads [such as application-specific integrated
circuits (ASICs), field-programmable gate arrays
(FPGAs), and digital signal processors (DSPs)]
requiring low-input, low-output (LILO) voltage
operation also benefit from the exceptional accuracy
(1% over load, line, and temperature), remote
sensing, excellent transient performance, and
soft-start capabilities to provide optimal system
performance. The versatility, performance, and small
footprint solution make this LDO an excellent choice
for high-current analog loads such as analog-todigital
converters (ADCs), digital-to-analog converters
(DACs), and imaging sensors as well as digital loads
such as serializer/deserializers (SerDes), FPGAs, and
DSPs.