www.德州仪器.com
TPS65012
SLVS504A–MARCH2004–REVISEDJANUARY2005
pinassignments(持续)
TerminalFunctions
终端
i/odescription
nameno.
CHARGERSECTION
ac40ichargerinputvoltagefromacadapter.theacpincanbeleftopenorcanbeconnectedto
groundifthechargerisnotused.
usb43ichargerinputvoltagefromusbport.theusbpincanbeleftopenorcanbeconnectedto
groundifthechargerisnotused.
ISET37IExternalchargecurrentsettingresistorconnectionforusewithacadapter
vbat_a41isenseinputforthebatteryvoltage.connectdirectlywiththebattery.
vbat_b42opoweroutputofthebatterycharger.connectdirectlywiththebattery.
TS38IBatterytemperaturesenseinput
pg11oindicateswhenavalidpowersupplyispresentforthecharger(opendrain)
agnd244analoggroundconnection.allanaloggroundpinsareconnectedinternallyonthechip.
nc27connectthispintognd.
powerpad™-connectthepowerpadtognd
SWITCHINGREGULATORSECTION
agnd345analoggroundconnection.allanaloggroundpinsareconnectedinternallyonthechip.
vinmain_一个,7,8iinputvoltageforvmainstep-downconverter.thismustbeconnectedtothesamevoltage
vinmain_bsupplyasvincoreandvcc.
l1_一个,l1_b9,10switchpinofvmainconverter.thevmaininductorisconnectedhere.
vmain13ivmainfeedbackvoltagesenseinput,connectdirectlytovmain
powersupplyfordigitalandanalogcircuitryofmainandcoredc-dcconverters.这个
vcc6imustbeconnectedtothesamevoltagesupplyasvincoreandvinmain.alsosupplies
serialinterfaceblock
pgnd1_一个,powergroundforvmainconverter
15,16
pgnd1_b
vincoreiinputvoltageforvcorestep-downconverter.thismustbeconnectedtothesamevoltage
5
supplyasvinmainandvcc.
l24switchpinofvcoreconverter.thevcoreinductorisconnectedhere.
vcore48ivcorefeedbackvoltagesenseinput,connectdirectlytovcore
PGND246PowergroundforVCOREconverter
LDOREGULATORSECTION
agnd121analoggroundconnection.allanaloggroundpinsareconnectedinternallyonthechip.
VINLDO122IInputvoltageforLDO1
VLDO124OOutputvoltageforLDO1
vfb_ldo123ifeedbackinputfromexternalresistivedividerforldo1
VINLDO219IInputvoltageforLDO2
VLDO220OOutputandfeedbackvoltageforLDO2
DRIVERSECTION
led22oleddriver,withblinkrateprogrammableviaserialinterface
vib3ovibratordriver,enabledviaserialinterface
CONTROLANDI2CSECTION
ps_seq14isetspower-向上/downsequenceofstep-downconverters
铅_onoff47ipush-buttonenablepin,alsousedtowakeupprocessorfrom
lowpower
模式
batt_cover39iindicatesifbatterycoverisinplace
hot_reset31ipush-buttonresetinputusedtorebootorwakeupprocessorviatps65012
mpu_reset32oopen-drainresetoutputgeneratedbyuseractivatedhot_重置
respwron33oopen-drainsystemresetoutput,generatedaccordingtothestateoftheldo1output
电压.
10
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