The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The
TPS54325 device 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 TPS54325 uses the D-CAP2™ mode control which provides a
very fast transient response with no external components. The TPS54325 also has a proprietary
circuit that enables the device to adapt to both low equivalent series resistance (ESR) output
capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates
from 4.5-V to 18-V VCC input , and from 2.0-V to 18-V VIN input power supply voltage. The output
voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow
start time and a power good function. The TPS54325 is available in the 14 pin HTSSOP package, and
designed to operate from –40°C to 85°C.
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