The TPS8269xSIP device is a complete 500 mA / 800 mA, DC/DC step-down power supplyintended for low-power applications. Included in the package are the switching regulator, inductorand input/output capacitors. No additional components are required to finish the design. TheTPS8269xSIP is based on a high-frequency synchronous step-down dc-dc converter optimized forbattery-powered portable applications. The MicroSIP DC/DC converter operates at a regulated 3-MHzswitching frequency and enters the power-save mode operation at light load currents to maintainhigh efficiency over the entire load current range. The PFM mode extends the battery life byreducing the quiescent current to 23 μA (typical) during light load operation. For noise-sensitiveapplications, the device has PWM spread spectrum capability providing a lower noise regulatedoutput, as well as low noise at the input. These features, combined with high PSRR and AC loadregulation performance, make this device suitable to replace a linear regulator to obtain betterpower conversion efficiency. The TPS8269xSIP is packaged in a compact (2.9 mm × 2.3 mm) and lowprofile (1 mm) BGA package suitable for automated assembly by standard surface mountequipment.
Feature
- Total Solution Size < 6.7 mm2
- 95% Efficiency at 3-MHz Operation
- 23μA Quiescent Current
- High Duty-Cycle Operation
- Best in Class Load and Line Transient
- ±2% Total DC Voltage Accuracy
- Automatic PFM/PWM Mode Switching
- Low Ripple Light-Load PFM Mode
- Excellent AC Load Regulation
- Internal Soft Start, 200-μs Start-Up Time
- Integrated Active Power-Down Sequencing (Optional)
- Current Overload and Thermal Shutdown Protection
- Sub 1-mm Profile Solution
