SGS Thomson Microelectronics L9351 Datasheet
. LOWSATURATIONVOLTAGE
.TTL COMPATIBLEINPUT
.WIDE SUPPLYVOLTAGE
.VERYLOW QUIESCENTCURRENT
(30mA max)
.NO EXTERNAL COMPONENTS
.INTERNAL RECIRCULATION PATH FOR
FAST DECAY OF INDUCTIVE LOAD CURRENT
.SHORT CIRCUIT PROTECTION
.FAILSAFE OPERATION : OUTPUT IS OFF IF
THELOGIC INPUTIS LEFTOPEN
DES CRIP TI ON
The L9351 is a monolithic integrated circuit designedto drivegroundedresistive,inductiveor mixed
loadsfromthe powersupplypositive side.Very low
standbycurrent (30mA max.) and internally implementedprotectionsagainstload dumpandreverse
voltagesmakethe deviceveryusefulin automotive
applications.No externalcomponentsare required
becausethe outputrecirculationclampingzener is
includedin thechip. This zenercan withstanda recirculation peakcurrentof 550mAon a 80mH/25Ω
load.
L9351
HIGHSIDE DRIVER
ADVANCE DATA
Pentawatt
ORDERING NUMBER : L9351
The device is self-protectedagainst overtemperature, overvoltage and overcurrent conditions. The
L9351operatesover thefull battery voltage range,
from4.5V (coldcranking)upto 24V (jumpstarting).
TheL9351 withstands revers battery conditions(13V)and supplyvoltage transientsup to 80Vlimitingthemaximum outputtransistorV
internalzener.ONandOFFdelaytimesof25µsmax
inanyoutputstatus,includingrecirculatingsituation,
allowPWM useof L9351.
to70V byan
EC
BLOCK DIAGRAM
October1992
Thisis advanced informationon a new product now in development or undergoing evaluation.Details are subject to changewithoutnotice.
1/6
L9351
PIN CO NNE CTI O N (top view)
Note : P i n 3 mus t be left op en or connected to ground.
ABSOLUTEMAXIMUM RATINGS
Symbol Parameter Value Unit
V
D.C. Supply Voltage
S
D.C. Reverse Supply Voltage
Load Dump: 5ms ≤ trise ≤ 10ms
τf Fall Time Constant = 100ms, Rsource ≥ 0.5Ω
24
–13
60
V
V
V
Low Energy Spikes: Rsource ≥ 10Ω,t
rise
=1µs,
±85
tf = 2ms, fr Repetition Frequency = 0.2Hz
Input Voltage –0.3 to 7 V
i
Output Current Internally Limited
O
Total Power Dissipation at T
tot
=90°C 17.1 W
case
Junction and Storage Temperature –55 to 150 °C
P
T
j,Tstg
V
I
THERMAL DATA
Symbol Parameter Value Unit
R
th j-amb
R
th j-case
Thermal Resistance Junction-ambient Max.
Thermal Resistance Junction-case Max.
80
3.5
V
°C/W
°C/W
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