TPS81256SIPT.pdf

The TPS81256 device is a complete MicroSiP DC/DC step-up power solution intended for battery-powered portable applications. Included in the package are the switching regulator, inductor and input/output capacitors. Only a tiny additional output capacitor is required to finish the design. The TPS81256 is based on a high-frequency synchronous step-up DC/DC converter optimized for battery-powered portable applications. The DC/DC converter operates at a regulated 4-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

1 Features 

• 91% Efficiency at 4MHz Operation 

• Wide VIN Range From 2.5V to 5.5V 

• IOUT ≥550mA at VOUT = 5.0V, VIN ≥3.3V 

• Fixed Output Voltage 5.0V 

• ±2% Total DC Voltage Accuracy 

• 43μA Supply Current 

• Best-in-Class Line and Load Transient 

• VIN ≥ VOUT Operation 

• Low-Ripple Light-Load PFM Mode 

• True Load Disconnect During Shutdown 

• Thermal Shutdown and Overload Protection 

• Sub 1-mm Profile Solution 

• Total Solution Size <9mm2 

• 9-Pin MicroSiP Packaging 2 Applications 

• Cell Phones, Smart-Phones, Tablet PCs 

• Mono and Stereo APA Applications 

• USB-OTG, HDMI Applications 

• USB Charging Port (5V)