TPS54334 Step-Down Voltage converter

Description

TPS 54334 Step-Down Voltage converter 4.2-28V Input up to 3A output.
The TPS54334 is a 28-V, 3-A, low quiescent supply
current (IQ), synchronous monolithic buck converter
with integrated MOSFETs.
The TPS54334 enables small designs by integrating
the MOSFETs and implementing current mode
control to reduce external component count.
Efficiency is maximized through the integrated
128mΩ/84mΩ MOSFETs, low quiescent supply
current and pulse skipping at light loads. Using the
enable pin, shutdown supply current is reduced to
2 µA by entering a shutdown mode.
The TPS54334 provides accurate regulation for a
variety of loads with an accurate 1.5% voltage
reference over temperature.
Cycle by cycle current limiting on the high-side fet
protects the TPS54334 in overload situations and is
enhanced by a low-side sourcing current limit which
prevents current runaway. There is also a low-side
sinking current limit which turns off the low-side
MOSFET to prevent excessive reverse current.
Hiccup protection will be triggered if the overcurrent
condition has persisted for longer than the preset
time. Thermal hiccup protection disables the part
when die temperature exceeds thermal shutdown
temperature and enables the part again after the
built-in thermal hiccup time.

Applications
• Consumer Applications such as a Digital TV
(DTV), Set Top Box (STB, DVD/Blu-ray Player),
LCD Display, CPE (Cable Modem, WiFi Router),
DLP Projectors, Smart Meters
• Battery Chargers
• Industrial and Car Audio Power Supplies
• 5V,12 and 24V Distributed Power Bus Supply