0
ACTIVE
Rating |
Automotive |
Topology |
Buck |
Iout (max) (A) |
6 |
Vin (max) (V) |
6 |
Vin (min) (V) |
2.95 |
Vout (max) (V) |
4.5 |
Vout (min) (V) |
0.8 |
Features |
Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable |
Control mode |
current mode |
Operating temperature range (°C) |
-40 to 125 |
Iq (typ) (A) |
0.000515 |
Duty cycle (max) (%) |
98 |
TI functional safety category |
Functional Safety-Capable |
WQFN (RTE)-16-9 mm² 3 x 3
The TPS54618C-Q1 device is a full-featured 6-V, 6-A, synchronous step-down current-mode converter with two integrated MOSFETs.
The TPS54618C-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 TPS54618C-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 start-up 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 condition.
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