Power management ICs ideal for portable and hand-held systems

Texas Instruments TPS65911 PMICs provide three step-down converters, one controller for external FETs to support high current rail, and eight LDOs. The device is intended to be a flexible PMIC for supporting different processors and applications. The device is designed for applications powered by one Li-Ion or Li-Ion polymer battery cell, three-series Ni-MH cells, or a 5V input, and multiple power rails required. Dynamic voltage scaling by a dedicated I2C interface is supported through dual processor cores. These processor cores are powered by two of the step-down converters, enabling optimum power savings. The third converter supplies power for the I/Os and memory in the system. The eight general-purpose LDO regulators provide a broad range of voltage and current capabilities. Five of the LDO regulators supports 1V to 3.3V with a 100mV step. The remaining three regulators (LDO1, LDO2, LDO4) support 1V to 3.3V with a 50mV step. The I2C interface fully controls all the LDO regulators. The EPC with EEPROM programmability manage the power sequencing requirements of systems and an RTC.