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TPS54429PWPR
7V to 18V Input, 4.5A Synchronous Step-Down DCAP2 Mode Converter
TPS54429PWP
Vout (50 mV/div)
1FEATURES
DESCRIPTION
23• D-CAP2™ Mode Enables Fast Transient
Response The TPS54429is an adaptive on-time
mode synchronous buck converter.•
Low Output Ripple and Allows Ceramic Outputenables system designersto complete
Capacitorvarious end equipment’s power bus regulators•
Wide VIN Input Voltage Range:7Vto18V cost effective, low component count,•
Output Voltage Range: 0.76Vto 5.5V current solution. The main control
TPS54429 uses the D-CAP2™ mode•
Highly Efficient Integrated FET’s Optimizedprovidesa very fast transient response
for Lower Duty Cycle Applications external compensation components.–
63 mΩ (High Side) and 55 mΩ (Low Side) also hasa proprietary circuit that enables•
High Efficiency, less than10 μA
at shutdown to adopt to both low equivalent series•
High Initial Bandgap Reference Accuracy (ESR) output capacitors, such as
SP-CAP, and ultra-low ESR ceramic•
Adjustable Soft Start device operates from 7-V to 18-V•
Pre-Biased Soft Start output voltage can be programmed between•
700-kHz Switching Frequency (fSW) and 5.5 V. The device also features an
soft start time anda power good function.•
Cycle By Cycle Over Current LimitTPS54429 is available in the 14-pin•
Power Good Output package, and designedto operate from
85°C.
APPLICATIONS Wide Rangeof Applications for Low Voltage
System
Digital TV Power Supply High Definition Blu-ray Disc™ Players Networking Home Terminal Digital Set Top Box (STB)
