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MIC7401 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC7401 Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 68 page  MIC7401 Configurable PMIC, Five-Channel Buck Regulator plus One-Boost with HyperLight Load ®, I2C Control, and Enable HyperLight Load is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com March 16, 2015 Revision 1.0 General Description The MIC7401 is a powerful, highly-integrated, configurable, power-management IC (PMIC) featuring five synchronous buck regulators, one boost regulator, and high-speed I 2C interface with an internal EEPROM. The device offers two distinct modes of operation “stand- by 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 I 2C communication 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. The one boost regulator provides a flash-memory programming supply that delivers up to 200mA 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 HyperLight 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 MIC7401 is designed for use with a small inductors (down to 0.47µH for buck, 1.5µH for boost), and an output capacitor as small as 10µF for buck, enabling a total solution size of 12mm × 8.5mm and less than 1mm height on top layer. The datasheet and other support documentation can be found on Micrel’s web site at: www.micrel.com. Features Input voltage: 2.4V to 5.5V Five independent synchronous bucks up to 3A One independent non-synchronous boost 200mA 200µA quiescent current (all regulators on) 5µA typical shutdown current 93% peak buck efficiency, 85% typical efficiency at 1mA Dual power mode: stand-by and normal mode I²C interface up to 3.4MHz I²C on-the-fly EEPROM programmability, featuring: Buck and boost output voltage scaling Power-on-Reset (PoR) threshold and delay Power-up sequencing/sequencing delay Buck and boost current limit Buck and boost pull-down when disabled Individual ON, OFF, and standby modes Soft-start and global power-good masking 23µA buck typical quiescent current 70µA boost typical quiescent current 1.5% output accuracy over temperature/line/load 2.0MHz boost switching frequency 1.3MHz buck operation in continuous mode Ultra-fast buck transient response 12mm × 8.5mm × 1.25mm solution size (top layer) Thermal-shutdown and current-limit protection 36-pin 4.5mm × 4.5mm × 0.85mm FQFN package (0.4mm pitch) 40C to +125C junction temperature range Applications Client and enterprise solid state drives (SSD) Consumer and in-vehicle infotainment devices Multimedia devices Portable handheld devices Security camera Gaming machines Service provider gateways |
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