1 Features
• D-CAP2™ mode enables fast transient response
• Low output ripple and allows ceramic output
capacitor
• Wide VIN input voltage range: 4.5 V to 18 V
• Output voltage range: 0.76 V to 5.5 V
• Highly efficient integrated FETs optimized
for lower duty cycle applications
–63 mΩ (high side) and 33 mΩ (low side)
• High efficiency, less than 10 μA at shutdown
• High initial bandgap reference accuracy
• Adjustable soft start
• Pre-biased soft start
• 650-kHz switching frequency (fSW)
• Cycle-by-cycle overcurrent limit
• Power good output

2 Applications
• Wide range of applications for low voltage system
– Digital TV power supply
– High definition Blu-ray Disc™ players
– Networking home terminal
– Digital set top box (STB)

3 Description
The TPS54525 is an adaptive on-time D-CAP2™
mode synchronous buck converter. The TPS54525
enables system designers to complete the suite
of various end equipment’s power bus regulators
with a cost effective, low component count, low
standby current solution. The main control loop for
the TPS54525 uses the D-CAP2™ mode control
which provides a very fast transient response with no
external compensation components. The TPS54525
also has a proprietary circuit that enables the device
to adopt to both low equivalent series resistance
(ESR) output capacitors, such as POSCAP or SPCAP,
and ultra-low ESR ceramic capacitors. The
device operates from 4.5-V to 18-V VIN input. The
output voltage can be programmed between 0.76 V
and 5.5 V. The device also features an adjustable soft
start time and a power good function. The TPS54525
is available in the 14-pin HTSSOP package, and
designed to operate from –40°C to 85°C.