Selecting the right power management IC (PMIC) is critical for mobile device designs to deliver power savings and the longest battery runtime. STMicroelectronics’ has launched a fully integrated PMIC for AMOLED displays. The three-channel AMOLED PMIC combines a low quiescent current and improved flexibility to extend the battery runtime of portable devices.
The STMP30 PMIC with an input-voltage range from 2.9 V to 4.8 V includes three integrated DC/DC converters to provide all the power rails needed for AMOLED displays in smartphones and other portable devices. The 550-mA VOUT1 boost converter offers an adjustable output Voltage, unlike other devices that fix VOUT1 at 4.6 V, said ST. The voltage can be set between 4.6 V and 5.0 V, in 100-mV increments. This optimizes the display brightness for lowest power consumption and best visibility under any conditions with the 5.0-V maximum setting enabling the use of high-brightness mode (HBM) for best viewing in bright outdoor lighting.
The remaining two outputs are provided by a 550-mA single-phase buck-boost inverting converter, programmable from -0.8V to -6.6 V, and a 5.5 V to 7.9 V 150-mA boost converter. The output voltages are programmed using the Single-Wire (S-Wire) protocol through external pins.
The PMIC features a true shutdown mode that helps maximize power savings. It also packs safety features, including thermal protection, input under-voltage lockout, and soft-start with inrush current limiting. In addition, the high-voltage outputs feature fast-discharge circuitry and offer short-circuit protection.
The STMP30 AMOLED PMIC, housed in a 2.161 × 2.069 mm CSP-25, is in volume production now.