The TPS65020 is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, and which require multiple power rails. The TPS65020 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 also integrates two 200-mA LDO voltage regulators, which are enabled with an external input pin. Each LDO operates with an input voltage range between 1.5 V and 6.5 V, 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 a Intel PXA270 based system. The serial interface is used for dynamic voltage scaling of the core voltage, masking interrupts, or for dis/enabling and setting the LDO output voltages. The interface is compatible with the Fast/Standard mode I2C™ specification, allowing transfers at up to 400 kHz.

The TPS65020 incorporates a push button debounced input and latched output for implementation of a push-button turn-on feature, typically required in smartphones or wireless PDAs.

• 1.2 A, 97% Efficient Step-Down Converter for System Voltage (VDCDC1)
• 1 A, Up to 95% Efficient Step-Down Converter for Memory Voltage (VDCDC2)
• 800 mA, 90% Efficient Step-Down Converter for Processor Core (VDCDC3)
• 20 mA LDO/Switch for Real Time Clock (VRTC)
• 2 × 200 mA LDO for SRAM and PLL
• Dynamic Voltage Management for Processor Core
• Externally Adjustable Reset Delay Time
• Battery Backup Functionality
• Separate Enable Pins for Inductive Converters
• I2C Compatible Serial Interface
• 85-µA Quiescent Current
• Low Ripple PFM Mode
• Thermal Shutdown Protection
• Push Button I/O