MIC7400 Datasheet | Micrel Semiconductor

Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with Hyper Light Load® and I2C Control General Description The MIC7400 is a powerful, highly integrated, configurable, power-management IC (PMIC) featuring five synchronous buck regulators, one boost regulator and high-speed I2C interface with an internal EEPROM. The device offers two distinct modes of operation “standby mode” and “normal mode” intended to provide an energy optimized solution suitable for portable handheld, and infotainment applications. In normal mode, the programmable switching converters can be configured to support a variety of Features , including start-up sequencing, timing, soft-start ramp, output voltage levels, current limit levels and output discharge for each channel. In stand-by mode the PMIC can configured in a low power state by either disabling an output or by changing the output voltage to a lower level. Independent exit from stand-by mode can be achieved either by I2C munication or the external STBY pin. The device has five synchronous buck regulators with high-speed adaptive on-time control supporting even the challenging ultra-fast transient requirement for Core supplies. One boost regulator provides a flash-memory programming supply that delivers up to 200m A of output current. The boost is equipped with an output disconnect switch that opens if a short-to-ground fault is detected. An internal EEPROM enables a single-chip solution across many platforms by allowing the designer to customize the PMIC for their design. Modifications can be made without the need to re-approve a new PMIC, saving valuable design resources and time. All switchers provide light-load efficiency with Hyper Light Load® mode for buck and PFM mode for boost. An additional benefit of this proprietary architecture is very-low output ripple voltage throughout the entire load range with the use of small output capacitors. The MIC7400 is designed for use with a small inductors (down to 0.47µH...