1 Features
• VOUT range: 0.65 V to 3.6 V
• Ultra-low VIN range: 0.65 V to 6 V
• VBIAS range: 1.7 V to 6 V
• Low dropout: 150 mV typical at 1.5 A, VBIAS = 5 V
• Noise: 7.1 μVRMS
• PSRR:
– 70 dB at 1 kHz
– 60 dB at 10 kHz
– 55 dB at 100 kHz
– 50 dB at 1 MHz
• 1.5% accuracy over line, load, and temperature
• Programmable soft-start provides linear voltage
start-up
• VBIAS permits low VIN operation with good transient
response
• UVLO on both IN and BIAS
• Stable with any output capacitor ≥ 10 μF
• Package: Small, 3-mm × 3-mm × 0.8-mm WSON-8

2 Applications
• High-performance computing
• Microservers
• Desktop and PC motherboards
• Data concentrators
• Rugged PC laptops

3 Description
The TPS7A74 low-dropout (LDO) linear regulator
provides an easy-to-use robust power management
solution for a wide variety of applications. Userprogrammable
soft-start minimizes stress on the
input power source by reducing capacitive inrush
current on start up. The soft-start is monotonic
and well-suited for powering many different types of
processors and application-specific integrated circuits
(ASICs). The enable input allows for easy sequencing
with external regulators. This complete flexibility
allows a solution to be configured that meets the
sequencing requirements of field-programmable gate
arrays (FPGAs), digital signal processors (DSPs), and
other applications with special start-up requirements.
A precision reference and error amplifier deliver 1.5%
accuracy over load, line, temperature, and process.
The device is stable with any type of capacitor greater
than or equal to 10 μF, and is fully specified for TJ =
–40°C to +125°C. The TPS7A74 is offered in a small,
3-mm × 3-mm, WSON-8 package, yielding a highly
compact, total solution size.