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TPS54314-TPS54314PWP-TPS54314PWPRG4
Low Input Voltage 3A Continuous Buck Converter with 1.8V Output
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VIN PH
Input Output• 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed voltage high-outputcurrent synchronous-buck PWMOutput Voltage Devices With 1.0% Initial Accuracy converters integrate all required active components.
Included on the substrate with the listed features are• Internally Compensated for Low Parts Count true, high performance, voltage error amplifier that• Fast Transient Response provides high performance under transient conditions;• Wide PWM Frequency− Fixed 350 kHz, 550 kHz an undervoltage-lockout circuit to prevent start-upor Adjustable 280 kHzto 700 kHz until the input voltage reaches3V; an internally and Load Protectedby Peak Current Limit and externally set slow-start circuit to limit in-rush
currents; and a powergood output useful forThermal Shutdown• Integrated Solution Reduces Board Area andTotal Cost
2 Applications• Low-Voltage, High-Density Systems With PowerDistributedat5Vor 3.3V Pointof Load Regulationfor High PerformanceDSPs, FPGAs, ASICs and Microprocessors• Broadband, Networking and Optical
Communications Infrastructure Portable Computing/Notebook PCs
Simplified Schematic
