L9305A ,DUAL HIGH CURRENT RELAY DRIVERblock diagram unless otherwise5 ambspecified)Symbol Parameter Test Conditions Min. Typ. Max. UnitV5 ..
L9308 ,DUAL LOW SIDE DRIVERL9308DUAL LOW SIDE DRIVER. DARLINGTON OUTPUT STAGE. INPUT COMPARATOR WITH WIDE RANGECOMMON MODE OPE ..
L9308 ,DUAL LOW SIDE DRIVERL9308DUAL LOW SIDE DRIVER. DARLINGTON OUTPUT STAGE. INPUT COMPARATOR WITH WIDE RANGECOMMON MODE OPE ..
L9308 ,DUAL LOW SIDE DRIVERBLOCK DIAGRAMOctober 1990 1/7This is advanced information on a new product now in development or un ..
L9332 ,Quad Intelligent Power Low Side SwitchFeaturesThe L9332 is a monolithic integrated quad low A Quad power low side driver with 3output s ..
L9333MD ,QUAD LOW SIDE DRIVERL9333QUAD LOW SIDE DRIVER■ WIDE OPERATING SUPPLY VOLTAGE MULTIPOWER BCD TECHNOLOGYRANGE FROM 4.5V U ..
LC7367 ,DTMF/PULSE Switchable DialerFeatures(1) Low voltage CMOS process for direct operation from telephone line.(2) Possible to use s ..
LC7367J ,DTMF/PULSE Switchable DialerFeaturesPackage Dimensions• Low voltage CMOS process for direct operation from tele-unit:mmphone li ..
LC7367JM ,DTMF/PULSE Switchable DialerFeaturesPackage Dimensions• Low voltage CMOS process for direct operation from tele-unit:mmphone li ..
LC7367JM ,DTMF/PULSE Switchable DialerBlock DiagramNo.3095–2/12LC7367J, 7367JMPin Description ( ) : Pin number of MFPP. in NamePn in No ..
LC7368J ,Switchable DTMF/Pulse DialerBLOCK DIAGRAM1mDilF--- upil WrittrWgio Reaithgis 'i'"FaiFi_'srjz:cifl1aiiTt1 iHiii;vss IF---I Im Ch ..
LC73701M ,Serial Interface DiallerCMOS LSINo. 5561LC73701MSerial Interface Dialler• The dial pulse make ratio can be specified to be ..
L9305A
DUAL HIGH CURRENT RELAY DRIVER
L9305AJanuary 1992
DUAL HIGH CURRENT RELAY DRIVER.HIGH OUTPUT CURRENT .HYSTERESIS INPUT COMPARATOR WITH
WIDE RANGE COMMON MODE OPERATION
AND GROUND COMPATIBLE INPUTS.INPUT COMPARATOR HYSTERESIS.INTERNAL THERMAL PROTECTION WITH
HYSTERESIS .INTERNAL OUTPUT OVERVOLTAGE CLAMP-
ING .SINGLE SUPPLY VOLTAGE (3.5V up to 18V)
DESCRIPTIONThe L9305A is a monolithic interface circuit with dif-
ferential input comparator and open collector output
able to sink high current specifically to drive relays,
lamps, d.c. motors.
Particular care has been taken to protect the device
against destructive failures - short circuit of outputs
to VS, output overvoltages, supply overvoltage.
1/6
A built in thermal shut-down switches off the device
when the IC’s internal dissipation becomes too great
and the chip temperature exceeds a set security
threshold.
A hysteresis input comparator increases the interfa-
ce’s noise immunity, allowing the correct use also in
critical environments as automotive or industrial ap-
plications.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS(*) The maximum allowed supply voltage without series resistors is limited by the built-in zener protection diodes
(**) Ton ≤ 2.5 ms ; repetition time ≥ 30 ms.
PIN CONNECTION (top view)
THERMAL DATA
L9305A2/6
ELECTRICAL CHARACTERISTICS (V5 = 14.4V, Tamb = 25°C ; refer to block diagram unless otherwisespecified)
*TON ≤ 2.5 ms ; repetition time ≥ 30 ms. The maximum allowed supply voltage without limiting resistors is limited by the built-in protection zener diodes see VCZ, VZS
Spec. velues.
TEST AND APPLICATION CIRCUIT
L9305A3/6
APPLICATION INFORMATIONS (refer to application circuit)D1 and D2 diodes are required only for reverse po-
larity protection.
If VS may be higher than VZS a resistor RS is neces-
sary to limit the zener current IZS. In order to deter-
mine RS value the following equations can be used :
VS MAX – VD1 – VZS min1) < IZS MAXRS
2) VS min – VD1 – RS – ISON MAX > VST min
where from Tamb = 25 °C :
- VS MAX and VS min are the maximum and minimum
values of power supply voltage
- VD1 is the forward diode D1 voltage drop
- VZS min = 20 V
- IZS MAX = 30 mA for d.c. mode and IZS MAX = 80 mA
for pulsed mode (see Absolute maximum ratings)
- ISOM MAX = 30 mA
- VST min = 3.5 V
If no RS value can satisfy the system 1), 2) a more
powerfull external zener DZ = 18 V is required.
Then 1) becomes :
VS MAX – VD1 – 18 < IDZ MAXRS
where IDZ MAX is the maximum allowed DZ current.
VA voltage cannot be higher than 20 V otherwise
output overvoltage protection may be activated.
Morever VA must be less than 16 V if short circuit
protection is required.
DZ2 = 22 to 24 V is a mandatory for output 7 protec-
tion if VS may be higher than 26 V.
MOUNTING INSTRUCTIONThe L9305A is assembled in a new plastic package,
the Powerdip, in which 8 pins (from 9 to 16) are at-
tached to the frame and remover the heat produced
by the chip.
Figure 2 and 3 show two ways of heatsinking. In the
first case, a PC board copper area is used as a
heatsink I = 65 mm. While in the second case, the
device is soldered to an external heatsink. In both
examples, the thermal resistance junction-ambient
is 35 °C/W.
Figure 2 : Example of Heatsink Using PC Board Copper (I = 65 mm).
Figure 3 : Example of an External Heatsink.
L9305A4/6
POWERDIP16 PACKAGE MECHANICAL DATA
L9305A5/6
. However, SGS-THOMSON Microelectronics assumes no responsibility for
the or other rights of third parties which may result from its
use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifica-
tions mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information pre-
viously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of SGS-THOMSON Microelectronics.
© 1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore -
Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A.
L9305A6/6
