(*) 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 input. Pin 10

replaces the pin 11 function, pin 11 becomes the power supply input and pin 12 is used as the signal ground.

figure 3 regarding DIP-16 package version)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Operating Supply Voltage

6

28

V

Supply Current

25

mA

Zener Voltage (pin 12)

6.5

8.8

V

Sensor Input (pin 2)

LOW Voltage

HIGH

2.5

0.5

V

V

Sensor Input Current (pin 2)

–12

–1

mA

Hall-cell Supply Zener Voltage

(pin5)

19

22

25

V

Hall-cell Supply Zener Current

(pin5)

t = 10ms

°C

100

mA

Series

Darlington Driver Sat.

Voltage

0.4

0.6

1.0

V

V

Current Limit. Sensing Voltage

(pin10)

200

400

mV

C2 Discharge Current

C2 Charge Current

(*) Note 1

0.2

5

6

3.4

20

35

µA

µA

External Darlington Overvoltage

Protection Zener Voltage

°C

25

30

35

V

Reference Voltage

2.5

3.5

V

Desaturation Time

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

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

value, given as first approximation by:

= 



30



16

DRIVING STAGE

OUTPUT

Current Driver for the External Darlington. To ensure stability and precision

Ω in

order not to change the open loop gain of the system.

situations.

Ω depending on the

external darlington type.

L482

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