L6376D Ver la hoja de datos (PDF) - STMicroelectronics
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L6376D Datasheet PDF : 18 Pages
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Pin connections
2
Pin connections
L6376
Figure 2. Pin connections (top view)
GND
O4
O3
VP
VC
VS
VCP
O2
O1
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
D95IN217
GND
DIAG
R
OFF DELAY
ON DELAY
I4
I3
I2
I1
GND
Table 3. Pin description
N# Pin name
Function
Positive supply voltage. An internal circuit, monitoring the supply voltage,
6
VS
maintains the IC in OFF-state until VS reaches 9 V or when VS falls under
8.5 V. The diagnostic is availlable since VS = 5 V.
Switch driver supply. To minimize the output drop voltage, a supply of about
10 V higher than VS is required. In order to use the built-in charge pump,
7
VCP 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
1, 10,
11, 20
O1, O2,
O3, O4
GND
High side outputs. Four independently controlled outputs with built-in current
limitation.
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
I1, I2, I3, I4 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.
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
16
ON DELAY
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.
Programmable OFF duration in short circuit. After the short circuit or
17
OFF
DELAY
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.
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