1 Features
• VOUT range: 0.8 V to 3.6 V
• Ultra-low VIN range: 0.8 V to 5.5 V
• VBIAS range 2.7 V to 5.5 V
• Low dropout: 60 mV typical at 1.5 A, VBIAS = 5 V
• Power good (PG) output allows supply monitoring
or provides a sequencing signal for other supplies
• 2% accuracy over line, load, and temperature
• Programmable soft-start provides linear voltage
start-up
• VBIAS permits low VIN operation with good transient
response
• Stable with any output capacitor ≥ 2.2 μF
• Available in small, 3-mm × 3-mm × 1-mm
VSON-10 and 5-mm × 5-mm VQFN-20 packages

2 Applications
• Network attached storage - enterprise
• Rack servers
• Network interface cards (NIC)
• Merchant network and server PSU

3 Description
The TPS748 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 designed
for powering many different types of processors and
ASICs. The enable input and power-good output
allow easy sequencing with external regulators. This
complete flexibility allows a solution to be configured
that meets the sequencing requirements of FPGAs,
DSPs, and other applications with special start-up
requirements.
A precision reference and error amplifier deliver 2%
accuracy over load, line, temperature, and process.
The device is stable with any type of capacitor greater
than or equal to 2.2 μF, and is fully specified for
TJ = –40°C to +125°C. The TPS748 is offered in a
small, 3-mm × 3-mm, VSON-10 package, yielding a
highly compact, total solution size. The device is also
available in a 5-mm × 5-mm VQFN-20 package for
compatibility with the TPS744.