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

The TPS6292xx family of devices are highly

efficient, small, and highly flexible synchronous step-down DC-DC converter s that are easy to use. A wide 3-V to 1 7-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

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 (see Table 8-2).