The TPS8267x device is a complete 600mA, DC/DC step-down power supply intended for
low-power applications. Included in the package are the switching regulator, inductor and
input/output capacitors. No additional components are required to finish the design.
The TPS8267x is based on a high-frequency synchronous step-down dc-dc converter optimized
for battery-powered portable applications. The MicroSiP™ DC/DC converter operates at a regulated 5.5-MHz
switching frequency and enters the power-save mode operation at light load currents to maintain
high efficiency over the entire load current range.
The PFM mode extends the battery life by reducing the quiescent current to 17µA (typ)
during light load operation. For noise-sensitive applications, the device has PWM spread spectrum
capability providing a lower noise regulated output, as well as low noise at the input. These
features, combined with high PSRR and AC load regulation performance, make this device suitable to
replace a linear regulator to obtain better power conversion efficiency.
The TPS8267x is packaged in a compact (2.3mm × 2.9mm) and low profile (1.0mm) BGA package
suitable for automated assembly by standard surface mount equipment.