TheTPS54318 device is a full featured 6-V, 3-A, synchronous, step-down, current mode converter with two integrated MOSFETs.
●The TPS54318 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm x 3 mm, thermally enhanced, QFN package.
●The TPS54318 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.
●Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-μA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 μA by entering a shutdown mode.
●Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency fold back and thermal shutdown protects the device during an overcurrent condition.
●Use SwitcherPro power supply design software to create, manage and share custom power supply designs for the TPS54318 by clicking here.
●For more SWIFT documentation, see the TI website at www.ti.com/swift.
●For all available packages, see the orderable addendum at the end of the datasheet.
● Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 3-A loads
● Switching Frequency: 200 kHz to 2 MHz
● Voltage Reference Over Temperature: 0.8 V ± 1%
● Synchronizes to External Clock
● Adjustable Soft-start/Sequencing
● UV and OV Power Good Output
● Low Operating and Shutdown Quiescent Current
● Safe Start-up into Pre-Biased Output
● Cycle-by-Cycle Current Limit, Thermal and Frequency Fold Back Protection
● Operating Junction Temperature Range: –40°C to 150°C
● Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
