1FEATURES
23• 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 7.0 V
• Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 160 mΩ (High Side) and 110 mΩ (Low Side)
• High Efficiency, Less Than 10 μA at Shutdown ultra•
High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Pre-Biased Soft Start
• 650-kHz Switching Frequency (f SW)
• Cycle By Cycle Over Current Limit

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)

DESCRIPTION
The TPS54229 is an adaptive on-time D-CAP2™
mode synchronous buck converter. TheTPS54229
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
TPS54229 uses the D-CAP2™ mode control which
provides a fast transient response with no external
compensation components. The TPS54229 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
TPS54229 is available in the 8-pin DDA package,
and designed to operate from –40°C to 85°C.