|
引脚 |
功能 |
描述 |
电压V |
|
1 |
LX2 |
|
17.5 |
|
2 |
|
|
21 |
|
3 |
BST2 |
|
21.1 |
|
4 |
|
|
3.9 |
|
5 |
|
|
3.9 |
|
6 |
GND |
|
0 |
|
7 |
RPT |
|
3.9 |
|
8 |
CT |
|
1.4 |
|
9 |
SYNC |
|
5.1 |
|
10 |
|
|
0.8 |
|
11 |
|
|
2.2 |
|
12 |
|
电压反馈 |
1.3 |
|
13 |
|
电流反馈 |
2.4 |
|
14 |
SSTCMP |
|
1.5 |
|
15 |
TIMER |
|
0.2 |
|
16 |
|
过压反馈 |
4.2 |
|
17 |
UM-S |
欠压反馈 |
3.1 |
|
18 |
ADIM |
|
5.7 |
|
19 |
|
|
3.3 |
|
20 |
VIN |
|
24.1 |
|
21 |
VREF |
|
5.7 |
|
22 |
BST1 |
|
22 |
|
23 |
|
|
21.9 |
|
24 |
LX1 |
|
17.7 |
|
取消保护：15脚接一只10K左右的电阻到地 | |||
外围电路
上图备注：图中的红色电阻是取消保护
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