Pins description

L9380

6/18

2

Pins description

Figure 2.

Pins connection (top view)

Table 2.

Pins function

N°

Pin

name

Function

1T1

Timer capacitor; the capacitor defines the time for the channel 1 shut down, after overload of

the external MOS transistor has been detected.

Supply voltage.

4T2

Timer capacitor; the capacitor defines the time for the channel 2 shut down, after overload of

the external MOS transistor has been detected.

5PR

Programming resistor for overload detetcion threshold; the resistor from this pin to ground

defines the drain pin current and the charging of the timer capacitor.

6

IN3

Input 3; equal to IN1.

7

IN2

Input 2; equal to IN1.

8IN1

Input 1; logic signal applied to this pin controls the driver 1; this pin features a current source

to assure defined high status when the pin is open.

9

EN

Enable logic signal high on this pin enables all channels

10

GND

Ground

11

G3

Gate 3 driver output; current source from CP or ground

12

G2

Gate 2 driver output; current source from CP or ground

14

S2

Source 2 sense input; monitors the source voltage.

15

S1

Source 1 sense input; monitors the source voltage.

16

G1

Gate 1 driver output; current source from CP or ground

17

D2

Drain 2 sense input; a programmable input bias current defines the drop across the external

19

D1

Drain 1 sense input; a programmable input bias current defines the drop across the external

20

CP

Charge pump capacitor; a alternating current source at this pin charges the connected

to charge all the three gates of the power MOS transistors.

3, 13, 18

NC

Not connected

T1

VS

N.C.

T2

PR

IN2

IN3

IN1

EN

G2

N.C.

S2

G1

S1

D2

N.C.

D1

CP

1

3

2

4

5

6

7

8

9

18

17

16

15

14

12

13

11

19

10

20

GND

G3

D98AT391