參數(shù)資料
型號： L585D1
廠商： 意法半導(dǎo)體
英文描述： CAR ALTERNATOR REGULATOR
中文描述： 汽車發(fā)電機調(diào)節(jié)器
文件頁數(shù)： 6/9頁
文件大?。?/td> 175K
代理商： L585D1
Figure1
: ApplicationCircuit.
PROTECTION
SHORT CIRCUIT PROTECTION
The integrateddarlington is protectedagainstshort
circuits of the lamp. The short circuit current is lim-
itedat 600mAandifthisconditionpersistesthermal
protectionwill intervene.
DUMP PROTECTION
The whole IC is protectedagainst load dump tran-
sients(100V, 300ms with a rise time greater than
5ms)inthetypicalapplicationcircuit.Theonlycom-
ponentto which this transientis directly applied(no
series resistances) is the lamp driver darlington.
During transientsthe darlington is kept off and can
withstandpeak voltagesof 100 V.Additionally,the
IC can withstand low energy spikes up to 300 V.
These spikes are clamped by an internal 100 V
zeneron thecollector of thelamp driver darlington.
THERMAL PROTECTION
Whenthe IC temperaturereaches170
°
C thelamp
driver darlingtonis keptoff.
The device is able to withstand all the voltage tran-
sientsmentionedin ISO DP7637/1.If voltage tran-
sients more severe than the above ISO standard
have to be withstood, an externalprotectiondevice
(transil) must be connected between pin 15 and
GND. For transients up to 250V, t
pulse
= 500
μ
s,
R
source
= 47
, the transil P6KE100P is recom-
mended.
L585
6/9
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