Automotive 3-V to 17-V, 1-A, high-efficiency and low-IQ, synchronous buck converter in SOT-583

The automotive-qualified TPS6292xx-Q1 family of

devices are highly efficient, small, and highly flexible

synchronous step-down DC-DC converters that are

easy to use. A wide 3-V to 17-V input voltage range

supports a wide variety of systems powered from

either 12-V, 5-V, or 3.3-V supply rails, or single-cell

or multi-cell Li-Ion batteries. The TPS629210-Q1 can

be configured to run at either 2.5 MHz or 1 MHz

in a forced PWM mode or a variable frequency

(auto PFM) mode. In auto PFM mode, the device

automatically transitions to power save mode at

light loads to maintain high efficiency. The low 4-µA

typical quiescent current also provides high efficiency

down to the smallest loads. TI’s automatic efficiency

enhancement (AEE) mode holds a high conversion

efficiency through the whole operation range without

the need of using different inductors by automatically

adjusting the switching frequency based on input and

output voltages. In addition to selecting the switching

frequency behavior, the MODE/S-CONF input pin can

also be used to select between different combinations

of external and internal feedback dividers and

enabling and disabling the output voltage discharge

capability. In the internal feedback configuration, a

resistor between the FB/VSET pin and GND can be

used to select between 18 different output voltage

options.