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TPS54425-TPS54425PWP-TPS54425PWPR
4.5V to 18V Input, 4A Synchronous Step-Down SWIFT?Converter
Vout (50 mV/div)
100 s/divm
WITH INTEGRATED FET( SWIFT™)
1FEATURES DESCRIPTIONThe TPS54425is an adaptive on-time
23• D-CAP2™ Mode Enables Fast Transient mode synchronous buck converter.
Response enables system designersto complete•
Low Output Ripple and Allows Ceramic Output various end equipment’s power bus regulators
Capacitor cost effective, low component count,
current solution. The main control•
Wide VIN Input Voltage Range: 4.5Vto 18VTPS54425 uses the D-CAP2™ mode•
Output Voltage Range: 0.76Vto 5.5V providesa very fast transient response•
Highly Efficient Integrated FET’s Optimized external compensation components.
for Lower Duty Cycle Applications also hasa proprietary circuit that enables
65 mΩ (High Side) and 55 mΩ (Low Side) to adopt to both low equivalent series
(ESR) output capacitors, such as•
High Efficiency, less than10 μA
at shutdown SP-CAP, and ultra-low ESR ceramic•
High Initial Bandgap Reference Accuracy device operates from 4.5-Vto 18-V•
Adjustable Soft Start output voltage can be programmed between
and 5.5 V. The device also features an•
Pre-Biased Soft Startsoft start time anda power good function.•
700-kHz Switching Frequency (fSW) TPS54425 is available in the 14-pin•
Cycle By Cycle Over Current Limit package, and designedto operate from
85°C.•
Power Good Output
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)
