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.
● 90% Efficiency at 5.5 MHz Operation
● 17µA Quiescent Current
● Wide VIN Range From 2.3 V to 4.8 V
● 5.5MHz Regulated Frequency Operation
● Spread Spectrum, PWM Frequency Dithering
● _Best in Class_ Load and Line Transient
● ±2% Total DC Voltage Accuracy
● Automatic PFM/PWM Mode Switching
● Low Ripple Light-Load PFM Mode
● ≥35dB VIN PSRR (1kHz to 10kHz)
● Internal Soft Start, 120-µs Start-Up Time
● Integrated Active Power-Down Sequencing
●(Optional)
● Current Overload and Thermal Shutdown
●Protection
● Sub 1-mm Profile Solution
● Total Solution Size <6.7 mm2
