MIC7400 five - channel buck regulator plus one - boost with hyperlight load ? and i 2 c control preliminary 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 14, 2014 revision 1.0 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 i 2 c interface in both master and slave mode with eeprom. the device offers two distinct modes of operation ?stand - by mode? and ?normal mode? intended to provide energy optimize solution suitable for portable handheld, ssd and infotainment applications. in normal mode, the programmable switching converters can be configured to support variety of start - up sequencing, timing, soft - start ramp, output voltage levels, current limit levels and output discharge on each channel. in stand - by mode, both output volt age levels and current limits are programmable. independent wake - up of the power management can be achieved both by i 2 c communication or external event using gpio. the device has five synchronous buck regulators with high - speed adaptive on - time control su pporting even the challenging ultra - fast transient requirement for core supplies. 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 embedded 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 va luable 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 r ange with the use of small output capacitors. the MIC7400 supplies are designed for use with a very - small inductor (down to 0.47h for buck, 1.5h for boost), and an output capacitor as small as 10f for buck, enabling a total solution size of 15mm 15mm and less than 1mm height. the datasheet and other support documentation can be found on micrel?s web site at: www.micrel.com . features ? input voltage: 2.4 v to 5.5v ? five independen t synchronous bucks u p to 3a ? one independent non - synchronous boost 200ma ? 200a quiescent current (all regulators on) ? 93% peak buck efficiency, 85% typical efficiency at 1ma ? stby control input for stand - by low - power mode ? i2c interface up to 3.4mhz ? i2c on - the - fly eeprom program mability , featuring: ? buck and boost output voltage scaling ? p ower - on - reset 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 ? 23a buck typ ical quiescent current ? 70a boost typ ical 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 ? 15mm 15mm 1.25mm solution size ? thermal - shutdown and cur rent - limit protection ? 36- pin 4.5mm 4.5mm 0.85mm fqfn package ? ? 40 c to +125 c junction temperature range applications ? c lient and enterprise solid state d rives (ssd) ? consumer and in - vehicle infot ainment devices ? multimedia devices ? portable handheld devices ? security camera ? gaming machines ? service provider gateways
micrel, inc. MIC7400 march 14, 2014 2 revision 1.0 typical application ordering information part number ( 1 ) marking output voltages features package ( 2 ) lead finish MIC7400yfl 7400- xxxx 1.8v, 1.1v, 1.8v 1.05v, 1.25v, 12v stby ? active high 36- pin 4.5mm 4.5mm fqfn pb - free MIC7400yfl 7400- xxxx 1.8v, 1.1v, 1.8v 1.05v, 1.25v, 12v stby - active low 36- pin 4.5mm 4.5mm fqfn pb - free MIC7400xxx ( 3 ) 7400- xxxx configurable configurable 36- pin 4.5mm 4.5mm fqfn pb - free note s : 1. other options available. contact micrel for details. 2. green, rohs - compliant package. lead finish is nipdau. mold compound is halogen free . 3. configurable options available upon request. contact marketing . micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944 - 0800 fax +1 (408) 474- 1000 web http://www.micrel.com micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in th is data sheet. this information is not intended as a warranty and micrel does not assume responsibility for its use. micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. no license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. except as provided in micrel?s terms and conditions of sale for such products, micrel assumes no liability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right . ? 2014 micr el, incorporated.
|
