The TPS54618-Q1 device is a full-featured 6-V, 6-A, synchronous
step-down current-mode converter with two integrated MOSFETs.
The TPS54618-Q1 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 WQFN package.
The TPS54618-Q1 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 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 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
TPS54618-Q1 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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