www.德州仪器.com
PINASSIGNMENT
PTN78000A
(顶 视图)
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4
2
3
5
PTN78000A
SLTS246A–APRIL2005–REVISEDMAY2005
TERMINALFUNCTIONS
终端
i/odescription
nameno.
thenegativeoutputvoltagepowernodewithrespecttothegndnode.itisalsothereferenceforthe
V
O
1i/o
V
O
调整
controlinputs.
V
I
2ithepositiveinputvoltagepowernodetothemodule,whichisreferencedtocommongnd.
n/c3thispinisactiveandmustbeisolatedfromanyelectricalconnection.
A1%resistormustbeconnectedbetweenpin4andpin5tosettheoutputvoltageofthemodulelower
than–3v.ifleftopen-电路,theoutputvoltagedefaultsto–3v.thetemperaturestabilityoftheresistor
V
O
Adjust4I
shouldbe100ppm/°c(orbetter).theset-pointrangeis–15vto–3v.thestandardresistorvaluefor
anumberofcommonoutputvoltagesisprovidedintheapplicationinformation.
GND5OThecommongroundconnectionforthe
V
I
和
V
O
powerconnections.
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