Datasheet Texas Instruments TPS54225PWPR — 数据表

TPS54225
SLVSA15C – OCTOBER 2009 – REVISED FEBRUARY 2011 www.ti.com 4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter
Check for Samples: TPS54225 FEATURES 1 23 D-CAP2в„ў Mode Enables Fast Transient
Response
Low Output Ripple and Allows Ceramic Output
Capacitor
Wide VCC Input Voltage Range: 4.5 V to 18 V
Wide VIN Input Voltage Range: 2 V to 18 V
Output Voltage Range: 0.76 V to 5.5 V
Highly Efficient Integrated FET’s Optimized
for Lower Duty Cycle Applications
-160 mΩ (High Side) and 110 mΩ (Low Side)
High Efficiency, less than 10 ОјA at shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
700-kHz Switching Frequency (fSW)
Cycle-By-Cycle Overcurrent Limit
Power Good Output APPLICATIONS DESCRIPTION
The TPS54225 is an adaptive on-time D-CAP2в„ў
mode synchronous buck converter. The TPS54225
enables system designers to complete the suite of
various end equipment’s power bus regulators with a …