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(*) These pins refer only to the DIP package type.
For the SO 16 version the permanent conduction reset output signal is not available and the pin 9 becomes the current sensing i nput. Pin 10
replaces the pin 11 function, pin 11 becomes the power supply input and pin 12 is used as the signal ground.
ELECTRICAL CHARACTERISTICS (VS = 14 V, – 40
°C ≤ Tj ≤ 125°C referred to application circuit of
figure 3 regarding DIP-16 package version)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VS
Operating Supply Voltage
6
28
V
IS
Supply Current
V12 = 4.5V
25
mA
VZ
Zener Voltage (pin 12)
IZ = 80mA
6.5
8.8
V
VI
Sensor Input (pin 2)
LOW Voltage
HIGH
2.5
0.5
V
II
Sensor Input Current (pin 2)
VI = LOW
VS = 6 to 16V
–12
–1
mA
VHz
Hall-cell Supply Zener Voltage
(pin5)
IHz = 10mA
19
22
25
V
IHZ
Hall-cell Supply Zener Current
(pin5)
t = 10ms
TAMB = 25
°C
100
mA
VCE sat
(V14–V16)
Series Darlington Driver Sat.
Voltage
Io = 70mA
Io = 150mA
0.4
0.6
1.0
V
VSENS
Current Limit. Sensing Voltage
(pin10)
VS = 6 to 16V
200
400
mV
I3D
I3C
I3C/I3D
C2 Discharge Current
C2 Charge Current
VS = 6 to 16V
(*) Note 1
0.2
5
6
3.4
20
35
A
VOVZ
External Darlington Overvoltage
Protection Zener Voltage
IOVZ = 5mA to 15mA
TAMB = 25
°C
25
30
35
V
V7
Reference Voltage
2.5
3.5
V
td
Desaturation Time
f = 40Hz VS = 14V
0.6
1.2
1.57
ms
PIN FUNCTIONS (continued)
N
°
Name
Function
13
GROUND
This pin must be connected to ground.
14
DRIVER COLLECTOR
The collector current for the internal driver which drives the external
darlington is supplied through this pin. The external resistor R10 limits the
dissipation in the IC. The value of the resistor depends is a function of the
darlington used and on the limiting current in the coil.
15
OVERVOLTAGE
LIMITATION
The external is protected against overvoltage by means of an internal
zener available at this pin. The external divider R5/R6 defines the limitation
value, given as first approximation by:
Vovp
=
30
R5
+ 5 103
R6 + 30
16
DRIVING STAGE
OUTPUT
Current Driver for the External Darlington. To ensure stability and precision
of Tdesat C3 and R3 must be used. Recommended value for R3 is 2K
in
order not to change the open loop gain of the system.
RC may be added to C3 to obtain greater flexibility in various application
situations.
C3 and RC values ranges are 1 to 100nF and 5 to 30K
depending on the
external darlington type.
L482
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