1 Features
1• Input Voltage Range: 1.5 V to 6.0 V
• Adjustable Output Voltage:
– 0.55 V to 5.5 V
• Very Low Dropout:
– 130 mV (max) at 500 mA (3.3 VOUT)
• High Output Accuracy: 0.7% (Typical) and 1%
(Maximum Over Temperature)
• Open-Drain Power-Good Output
• IQ: 25 μA (Typical)
• Built-In Soft-Start With Monotonic VOUT Rise
• Package:
– 2-mm × 2-mm WSON-6 (DRV)
• Active Output Discharge

2 Applications
• Set-Top Boxes, Gaming Consoles
• Home Theater and Entertainment
• Desktops, Notebooks, Ultrabooks
• Printers
• Servers
• Thermostat and Lighting Control
• Electronic Point of Sale (EPOS)

3 Description
The TPS745 is an adjustable 500-mA low-dropout
(LDO) regulator with power-good functionality. This
device is available in a small, 6-pin, 2-mm × 2-mm
WSON package and consumes very low quiescent
current and provides fast line and load transient
performance. The TPS745 features an ultra-low
dropout of 130 mV at 500 mA that can help improve
the power efficiency of the system.
The TPS745 is optimized for a wide variety of
applications by supporting an input voltage range
from 1.5 V to 6.0 V and an externally adjustable
output range of 0.55 V to 5.5 V. The low output
voltage enables this LDO to power the modern
microcontrollers with lower core voltages.
The TPS745 has a power-good (PG) output that
monitors the voltage at the feedback pin to indicate
the status of the output voltage. The EN input and PG
output can be used for the sequencing multiple power
sources in the system.
The TPS745 is stable with small ceramic output
capacitors, allowing for a small overall solution size.
A precision band-gap and error amplifier provides
high accuracy of 0.7% (max) at 25°C and 1% (max)
over temperature (85ºC). This device includes
integrated thermal shutdown, current limit, and
undervoltage lockout (UVLO) features. The TPS745
has an internal foldback current limit that helps
reduce the thermal dissipation during short-circuit
events.