In(✬) : ISO definition nominal current for high side automotive
switches.
■ LOADCURRENT UP TO 15A PER CHANNEL
■ OVERVOLTAGEPROTECTION
■ UNDERVOLTAGE PROTECTION
■ DOUBLE FLASHINGFREQUENCY IN LOW
DSS(cl)
In(✬ )R
on
LOADCONDITION
■ CYCLEBY CYCLEPOWERLIMITATION
■ BUZZER DRIVER
■ TRAILERINDICATION
DESCRIPTION
The VN410 is a monolithic device made using
SGS-THOMSONVerticalIntelligentPower
Technology,integrating all the featuresneeded to
implementacompleteautomotiveflashing
system.
This device has two identical power channels, so
the informations are are specified for only one. R
pins are connected to an external R, C
C
t
networkwhich fixes the flashing frequency.LDIR,
RDIR direction inputs activate the corresponding
output (or none). EM inputs turns on both power
outputs for emergency flashing, which is reflected
MULTIWATT-15
Order Codes :
(vertical)(In Line)
VN410VN410(012Y)
by flashing red LED connected to LEDEM output.
AL input can be connectedto an anti-theft alarm
system, making both power outputs flashing. In
case of low load (burned lamp) buzzer frequency
and outputs flashing will double, thus indicating a
fault condition(directionmode only).
In case of overloading of the power outputs,
built-in-thermalshutdown circuits will reduce duty
,
cyclesoastokeepmaximumjunction
t
temperature withinsafe limits.Rol pinis
connected to an external resistor to detect a
burned lamp and a trailer connection. LEDT is
connected to an external green LED which
indicatesthe trailerconnection.
BLOCK DIAGRAM
March 1998
1/11
Page 2
VN410
ABSOLUTEMAXIMUMRATING
Symb o lPara met erVal u eUni t
-VbatReverse Supply Voltage-12V
V
BR(DSS)
V
I
I
Out
V
I
V
P
T
T
Note 1: In case the voltage drops beetween ground connection exceed 0.4V, extenal resistors in series with EM pin and AL pin areneeded
(if these pins are used)to prevent damages to the device. The value of these resistors is 100Ω.
CONNECTIONDIAGRAM
Drain-S o ur ce B reakdown V olt ag e60
(Internally clamped)
Break dow n Voltage in Pad : LE DE M(V
p1
Break dow n Curre nt in Pad : RT , CT , R O L
p1
LDIR,RDI R
(V
bat
bat
<15V)
> 15V )
V
bat
15
+/- 10
-10/+100
Maximum DC Load Curr ent15A
Volt age Drop Bet we en grou nd co nnec tions (see note 1)0.4V
* :with an external capacitor of 22nF connected between V
10µH output inductance.
and GND, with loads connected(2 bulbs per channel),and with a maximum of
bat
CLAS SCONTENTS
Impedance
CAll f unction of the dev ic e ar e per f ormed as designed af t e r expos ure to disturbance.
EO ne or more fu nc tions of the de vice i s not perf or med as desig ned aft er exposure and
cannot be returned to pr op er operat ion without r eplacing the devic e.
3/11
Page 4
VN410
THERMALDATA
R
thj-case
ELECTRICAL CHARACTERISTICS (10V < VCC<18V;-40oC<TJ< 125oC unlessotherwise
specified)
POWER
SymbolParameterTest C ondition sMin.Typ.Max.Un it
V
R
I
SWITCHING
SymbolParameterTest C ondition sMin.Typ.Max.Un it
(di/dt)
(di/dt)
Thermal Resistance Junction-case (1)Max1.5
Oper at i ng Voltage61318V
bat
On State Resis t a nc e
on
(per C hannel )
Supply Quies c ent
sq
Current
Tur n-on Current SlopeR
on
Tur n-of f C urr ent SlopeR
off
TC=25oCV
I
out=Inominal
TC=25oCV
bat
bat
=13V
=13V
Off State
=2.7Ω; TC=25oC; V
load
=2.7Ω; TC=25oC; V
load
=13 V0.01A /µ s
bat
=13 V0.01A /µ s
bat
0.07Ω
100µA
o
C/W
FLASHING
SymbolParameterTest C ondition sMin.Typ.Max.Un it
f
δ
δ
I
dir
I
dir
I
em
I
I
dm1
I
dm2
I
I
T
T
T
I
df1
I
df2
I
Flas hing frequen c y
b
Rt= 2400
Ω
Ct=100 nF241.6Hz
(normal operation)
Duty C y cleDirecti on Indic ator Flashing M ode0.45
1
Duty C y cleEmergency and Alarm F lashing
2
0.35
Mode
Direction CurrentsR
L
=470Ω;R2= 470 Ω ;TC=25oC5 2040mA
1
R
Emer gency S ourc e
Vem=1V; TC=25oC52040mA
Current
Alarm So urce CurrentVal=2V; TC=25oC52040mA
al
LED Sour c e Cur rent
LEDEM pin s hort circuited to GND35120mA
(emer gen c y flashing)
LED Sink Curr ent
1570mA
(emer gen c y flashing)
LED Curr ent ( trailer
et
LEDT pin shor t c irc u it ed t o GND35120mA
indicat o r)
Buzz e r CurrentBUZ Z pin short cir cuited to GND2501000mA
z
On Time BuzzerRt = 3000 Ω; Ct= 100 nF348ms
z
Buzzer Filter TimeRt = 3 000 Ω; Ct= 1 00 n F828ms
fz
Alarm F iltering Tim eRt = 3000 Ω; Ct= 100 nF1540m s
Ext er na l Res istor for Dou ble Frequency and Tra iler
ol
8578668 75Ω
Detections
Connect o r Leakag e Current Between Input Directi on Pins
lk
2mA
and Vbat Pin
Out put I n duc t a nc e10µHV
out
ig
5/11
Page 6
VN410
SWITCHINGPARAMETERSTEST CONDITIONS
TRUTH TABLE
ConditionsAlEmDir RDir LOUT ROUT L
Normal Oper a ti onH
Ov er- voltageXXXXLL
Under-voltageXXXXLL
Power Ov erloadIn that case , t he duty cycle will be reduc ed s o as t o keep t he junct ion
Hiz= high i mpedance, L = low level, X= uns pecified, A =act ive, O =open, C=c l osed.
iz
H
iz
H
iz
H
iz
A
tem perat ure below T
Hiz
H
H
L
X
O
iz
iz
pl
O
C
X
X
O
C
O
X
X
L
L
A
A
A
L
A
L
A
A
FUNCTIONAL DESCRIPTION
- NORMALOPERATION
The righ t or lef t channel is act ivated by t he corr esponding p os i ti on of th e direction indica to r through the
direction input pins. Each time an o ut p ut ( or both) is a c tivated , th e buzzer is also activated t hrough t h e
BUZ Z pin at the double frequency t ha n the output(s). In emergenc y case, if t he emergency but t o n is
act ivated the two chan nels are t urned on. A t t he s ame t im e the emerge ncy red LED i s fl ashing . A n
anti- theft a larm can be connec te d to t he AL pin, in that con dition if t he ant i- t he f t alarm is used the t wo
channel s are activated.
- UNDER-VOLTAGEOR OVER-VOLTAGE CONDITION
In case the device detect s a n undervoltage or an ov e rv oltage c ondition the activat ed ch annel(s) ar e
automatica lly sw it c he d off whate ver the i nput com mands (LDI R, RDIR, AL, EM )
- TRAILER OPERATION
The tr a iler det e ct ion is achiev e d with the ROL ext ernal resistor. In that ca s e the green tr a iler LED is
flas hi ng through the pin LE DT in s ynchronis m with the ou t put s.
- LOW LOADCONDITION
The l ow load detect ion is a c hieved wit h th e ROL ex t er na l resisto r connected be tw een ROL pin and RT pin.
If a low load co ndi ti on has b een detecte d th e o ut p ut fl ashing fre quenc y o n the guilty channel and th e
buzzer frequency will be double ( in direction mode only) .
- POWER LIMITATIONCONDITION
In case of overloading of t he power out p ut s t he duty cyc le is reduc ed internally by the devic e it self so as t o
keep m aximum junction tem pe r ature w ithin safe l imit s.
- CHIP GROUND DISCONNECTION
If GN D pin is disconnected , the device will sw it ch of f prov ided V
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may resultsfrom its use. No
license is granted by implication or otherwiseunder any patent orpatent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subjectto change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproducts are notauthorized foruse as criticalcomponents in lifesupport devices orsystems without express
written approval of SGS-THOMSON Microelectonics.
1998 SGS-THOMSON Microelectronics - Printed in Italy - All Rights Reserved
Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
SGS-THOMSON Microelectronics GROUP OF COMPANIES
...
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