TI TPS650250RHBR

The TPS650250 device is an integrated Power Management IC for applications powered by one LiIon or Li-Polymer cell, which require multiple power rails. The TPS650250 provides three highly efficient, step-down converters targeted at providing the core voltage, peripheral, I/O and memory rails in a processor-based system. All three step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin high. The TPS650250 also integrates two general-purpose 200-mA LDO voltage regulators, which are enabled with an external input pin. Both LDOs operate with an input voltage range from 1.5 V to 6.5 V, allowing them to be supplied from one of the step-down converters or directly from the battery. The output voltage of the LDOs can be set with an external resistor divider for maximum flexibility. Additionally, a 30-mA LDO is typically used to provide power in a processor-based system to a voltage rail that is always on. TPS650250 comes in a small 5-mm x 5-mm 32-pin QFN package (RHB).

• 1.6 A, 97% Efficient Step-Down Converter for System Voltage (VDCDC1)
• 3.3 V, 2.8 V, or Adjustable
• 0.8 A, up to 95% Efficient Step-Down Converter for Memory Voltage (VDCDC2)
• 1.8 V, 2.5 V, or Adjustable
• 0.8 A, 90% Efficient Step-Down Converter for Processor Core (VDCDC3)
• Adjustable Output Voltage on VDCDC3
• 30-mA LDO for Vdd_alive
• 2 x 200 mA General-Purpose LDOs (LDO1 and LDO2)
• Dynamic Voltage Management for Processor Core
• LDO1 and LDO2 Voltage Externally Adjustable
• Separate Enable Pins for Inductive Converters
• 2.25-MHz Switching Frequency
• 85-μA Quiescent Current
• Thermal Shutdown Protection

• Cellular, Smart Phones
• GPS
• Digital Still Cameras
• Split Supply DSP and μP Solutions
• Samsung ARM-Based Processors