Pin connections

L6376

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2

Pin connections

Figure 2.

Pin connections (top view)

Table 3.

Pin description

N#

Pin name

Function

Positive supply voltage. An internal circuit, monitoring the supply voltage,

Switch driver supply. To minimize the output drop voltage, a supply of about

connect a filter capacitor from pin1 to pin. The suggested value assures a

fast transition and a low supply ripple even in worse condition. Using the

four channels contemporarily, values less than 68 nF have to be avoided.

2, 3, 8, 9

High side outputs. Four independently controlled outputs with built-in current

limitation.

1, 10,

11, 20

GND

Ground and power dissipating pins. These pins are connected to the bulk

ground of the IC, so are useful for heat dissipation.

12,13,

14, 15

Control inputs. Four independent control signals. The output is held OFF

until the voltage at the corresponding input pin reaches 1.35 V and is turned

OFF when the voltage at the pin goes below 1.15 V.

16

ON DELAY

Programmable ON duration in short circuit. If an output is short circuited to

ground or carryng a current exceeding the limit, the output is turned OFF

and the diagnostic activation are delayed. This procedure allows the driving

of hard surge current loads. The delay is programmed connecting a

capacitor (50 pF to 15 nF) versus ground with the internal time constant of

1.28

µs/pF. The function can be disabled short circuiting this pin to ground.

17

OFF

DELAY

Programmable OFF duration in short circuit. After the short circuit or

overcurrent detection, the switch is held OFF before the next attempt to

switch on again. The delay is programmed connecting a capacitor (50 pF to

15 nF) versus ground with the internal time constant of 1.28

µs/pF. Short

circuiting this pin to ground the OFF delay is 64 times the ON delay.

18

R

Asyncronous reset input. This active low input (with hysteresis), switch off all

the outputs independently from the input signal. By default it is biased low.

GND

O1

I1

O3

VP

VC

VCP

O2

O4

GND

10

8

9

7

6

5

4

3

2

13

14

15

16

17

19

18

20

12

1

11

GND

D95IN217

I2

I3

ON DELAY

I4

OFF DELAY

R

DIAG

GND