L4909 查看數據表（PDF） - STMicroelectronics
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L4909 Datasheet PDF : 7 Pages
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L4909
PIN CONNECTION
15
FB2
14
VO2
13
VINB
12
N.C.
11
VO3
10
FB3
9
EN3
8
GND
7
EN2
6
EN1
5
OC
4
TRIG
3
VINA
2
VO1
1
FB1
TAB CONNECTED TO PIN 8
D00AU1153
Table 1. Pin Description
No. Pin Name
Funct ion
1
FB1 REG1 feedback voltage input
2
Vo1 REG1 output voltage
3
VinA Input DC supply voltage
4
TRIG Trigger for external SCR (crowbar protection)
5
OC Over current warning output
6
EN1 REG1 enable input
7
EN2 REG2 enable input
8
GND Analog ground
9
EN3 REG3 enable input
10
FB3 REG3 feedback voltage input
11
Vo3 REG3 output voltage
12
N.C. Not Connected
13
VinB Input DC supply voltage
14
Vo2 REG2 output voltage
15
FB2 REG2 feedback voltage input
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