TPS54325 Series

4.5V to 18V Input, 3A Synchronous Step-Down Converter

Catalog

4.5V to 18V Input, 3A Synchronous Step-Down Converter

Part	Voltage - Input (Max) [Max]	Supplier Device Package	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Mounting Type	Topology	Synchronous Rectifier	Frequency - Switching	Number of Outputs	Package / Case	Package / Case [y]	Package / Case [x]	Function	Output Type
Texas Instruments TPS54325PWP	18 V	14-HTSSOP	3 A	85 °C	-40 °C	Positive	5.5 V	2 V	0.76 V	Surface Mount	Buck		700 kHz	1	14-PowerTSSOP	4.4 mm	0.173 in	Step-Down	Adjustable

Catalog

4.5V to 18V Input, 3A Synchronous Step-Down Converter

Key Features

• D-CAP2™ Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VCCInput Voltage Range: 4.5 V to 18 VWide VINInput Voltage Range: 2.0 V to 18 VOutput Voltage Range: 0.76 V to 5.5 VHighly Efficient Integrated FET’s Optimized forLower Duty Cycle Applications – 120 mΩ (High Side)and 70 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start700-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitPower Good OutputD-CAP2™ Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VCCInput Voltage Range: 4.5 V to 18 VWide VINInput Voltage Range: 2.0 V to 18 VOutput Voltage Range: 0.76 V to 5.5 VHighly Efficient Integrated FET’s Optimized forLower Duty Cycle Applications – 120 mΩ (High Side)and 70 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start700-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitPower Good Output

Description

The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device 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 TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 also has a proprietary circuit that enables the device to adapt 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 VCC input , and from 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C. The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device 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 TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 also has a proprietary circuit that enables the device to adapt 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 VCC input , and from 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.