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TPS54525PWPR
4.5V to 18V Input, 5.5-A Synchronous Step-Down SWIFT?Converter
Slew Rate (0.35A/µsec) (50 mV/div ac coupled)O (2A/div)OUTTime Scale (100µsec/div)
TPS54525
www.ti.com SLVSB82A –MAY 2012–REVISED JULY 2013
4.5V to 18V Input, 5.5-A Synchronous Step-Down Converter
Checkfor Samples: TPS54525
1FEATURES DESCRIPTIONThe TPS54525is an adaptive on-time D-CAP2™
23• D-CAP2™ Mode Enables Fast Transient mode synchronous buck converter. The TPS54525
Response enables system designersto complete the suiteof
• Low Output Ripple and Allows Ceramic Output various end equipment’s power bus regulators witha
Capacitor cost effective, low component count, low standby
current solution. The main control loop for the
• Wide VIN Input Voltage Range: 4.5Vto 18VTPS54525 uses the D-CAP2™ mode control which
• Output Voltage Range: 0.76Vto 5.5V providesa very fast transient response with no
• Highly Efficient Integrated FET’s Optimized external compensation components. The TPS54525
for Lower Duty Cycle Applications also hasa proprietary circuit that enables the device
–63 mΩ (High Side) and 33 mΩ (Low Side) to adopt to both low equivalent series resistance
(ESR) output capacitors, such as POSCAPor SP-
• High Efficiency, less than10 μAat shutdown CAP, and ultra-low ESR ceramic capacitors. The
• High Initial Bandgap Reference Accuracy device operates from 4.5-Vto 18-V VIN input. The
• Adjustable Soft Start output voltage can be programmed between 0.76V
and 5.5 V. The device also features an adjustable
• Pre-Biased Soft Startsoft start time anda power good function. The
• 650-kHz Switching Frequency (fSW) TPS54525 is available in the 14-pin HTSSOP
• Cycle By Cycle Over Current Limit package, and designedto operate from –40°Cto
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)
