The TPS65020 device is an integrated power management IC for applications powered by one
Li-Ion or Li-Polymer cell, and which requires multiple power rails.
The TPS65020 device 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 TPS65020 device also integrates two 200-mA LDO voltage regulators, which are enabled
with an external input pin. Each LDO operates with an input voltage range from 1.5 V to 6.5 V, thus
allowing them to be supplied from one of the step-down converters or directly from the main
battery. The two 200-mA LDO voltage regulators are intended for use with the SDRAM and PLL power
supply in an Intel PXA270-based system. The serial interface is used for dynamic voltage scaling of
the core voltage, masking interrupts, or for disabling or enabling and setting the LDO output
voltages. The interface is compatible with both the fast and standard mode
I2C specifications, allowing transfers at up to 400 kHz.
The TPS65020 incorporates a push-button debounced input and latched output for
implementation of a push-button turnon feature, typically required in smart phones or wireless