The TPS54618 device is a full-featured 6-V, 6-A, synchronous step-down current-mode
converter with two integrated MOSFETs.
The TPS54618 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 IC footprint with a small 3-mm × 3-mm thermally enhanced
The TPS54618 provides accurate regulation for a variety of loads with an accurate ±1%
voltage reference (VREF) over temperature.
Efficiency is maximized through the integrated 12-mΩ MOSFETs and 515-µA typical supply
current. Using the enable pin, shutdown supply current is reduced to 5.5-µA by entering a shutdown
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 slow-start pin. An open-drain power-good signal indicates the output is within 93% to 107%
of its nominal voltage.
Frequency foldback and thermal shutdown protect the device during an overcurrent
The TPS54618 is supported in the SwitcherPro™ software tool at
For more SWIFT™ documentation, see the TI
website at www.ti.com/swift.
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