1 Features
• VOUT range: 0.8V to 3.6V
• Ultra-low VIN range: 0.8V to 5.5V
• VBIAS range 2.7V to 5.5V
• Low dropout: 60 mV typical at 1.5A, VBIAS = 5V
• Power-good (PG) output allows supply monitoring
or provides a sequencing signal for other supplies
• 1% accuracy over line, load, and temperature (new
chip)
• 2% accuracy over line, load, and temperature
(legacy chip)
• Programmable soft-start provides linear voltage
start-up
• VBIAS permits low VIN operation with good transient
response
• Stable with any output capacitor ≥ 2.2μF
• Available in small, 3mm × 3mm × 1mm VSON-10
and 5mm × 5mm 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 1%
accuracy (new chip) over load, line, temperature,
and process. The device is stable with any type of
capacitor greater than or equal to 2.2μF, and is fully
specified for TJ = –40°C to +125°C. The TPS748 is
offered in a small, 3mm × 3mm, VSON-10 package,
yielding a highly compact, total solution size. The
device is also available in a 5mm × 5mm VQFN-20
package for compatibility with the TPS742.