L9380 查看數據表（PDF） - STMicroelectronics
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L9380 Datasheet PDF : 18 Pages
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Pins description
2
Pins description
L9380
Figure 2. Pins connection (top view)
T1
VS
N.C.
T2
PR
IN3
IN2
IN1
EN
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
D98AT391
CP
D1
N.C.
D2
G1
S1
S2
N.C.
G2
G3
Table 2.
N°
1
2
4
5
6
7
8
9
10
11
12
14
15
16
17
19
20
3, 13, 18
Pins function
Pin
name
Function
T1
VS
T2
PR
IN3
IN2
IN1
EN
GND
G3
G2
S2
S1
G1
D2
D1
CP
NC
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.
Timer capacitor; the capacitor defines the time for the channel 2 shut down, after overload of
the external MOS transistor has been detected.
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.
Input 3; equal to IN1.
Input 2; equal to IN1.
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.
Enable logic signal high on this pin enables all channels
Ground
Gate 3 driver output; current source from CP or ground
Gate 2 driver output; current source from CP or ground
Source 2 sense input; monitors the source voltage.
Source 1 sense input; monitors the source voltage.
Gate 1 driver output; current source from CP or ground
Drain 2 sense input; a programmable input bias current defines the drop across the external
resistor RD1; this drop fixes the overload threshold of the external MOS.
Drain 1 sense input; a programmable input bias current defines the drop across the external
resistor RD1; this drop fixes the overload threshold of the external MOS.
Charge pump capacitor; a alternating current source at this pin charges the connected
capacitor CCP to a voltage 10V higher than VS; the charge stored in this capacitor is than used
to charge all the three gates of the power MOS transistors.
Not connected
6/18
Doc ID 5853 Rev 4
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