1 Features
1• 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 7 V
• Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 100 mΩ (High-Side) and 70 mΩ (Low-Side)
• High Efficiency, Less Than 10 μA at shutdown SP•
High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Prebiased Soft Start
• 700-kHz Switching Frequency (fSW)
• Cycle-By-Cycle Overcurrent Limit

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 TPS54327 device is an adaptive on-time D-
CAP2™ mode synchronous buck converter.
TheTPS54327 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 TPS54327 uses the D-CAP2 mode control
which provides a fast transient response with no
external compensation components. The TPS54327
also has a proprietary circuit that enables the device
to adopt 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 VIN input. The
output voltage can be programmed between 0.76 V
and 7 V. The device also features an adjustable soft
start time. The TPS54327 is available in the 8-pin
DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C.