LTC1754-3.3/LTC1754-5
典型应用S
低功耗电池备份与Autoswitchover和无反向电流
1N4148
V
IN
5V
10F
75k
1.2M
4
475k
3
6
10k
5
U
3
1F
LTC1521-3.3
2
1
4
5
C
–
V
IN
6
C
+
V
OUT
1
10F
3
V
OUT
= 3.3V
I
OUT
≤
300mA
I
OUT
≤
20毫安BACKUP
+
2-CELL
镍镉电池
电池
10F
LTC1754-3.3
SHDN
GND
2
7
8
LTC1540
HIGH =备份模式
175433 TA03
1M
2
1
USB端口以5V稳压电源
1F
4
5
3
10F
6
1
LTC1754-5
V
OUT
5V 10μF
±4%
50mA
2
1754 TA06
9
