LTC1645
应用S我FOR ATIO
V
IN2
3.3V
两个电流限制： 10A
V
IN1
5V
D1
1N4148
10k
R1
47.5k
1%
R2
10k
1%
13k
1%
0.005*
IRF7413
10
0.01F
25V
14
13
12
1
2
V
CC1
SENSE1 GATE1
10
ON
LTC1645
(14-LEAD)
故障
4
故障
定时器
11
0.33F
GND
7
* LRF1206-01 - R005 -J （ IRC ）
图17.大力推动5V其次是3.3V
V
IN1
3.3V
D1
1/2 BAT54C
V
IN2
5V
R1
10k
22.6k
1%
D2
1/2
BAT54C
10k
10
10k
11.3k
1%
4
14
V
CC1
ON
SENSE1 GATE1 V
CC2
SENSE2 GATE2
COMP
+
LTC1645
(14-LEAD)
COMPOUT
FB
8
9
6
5
Q3
PN2222
故障
定时器
11
0.33F
GND
7
图18.电源多路复用器
16
U
0.005*
IRF7413
W
U U
+
C
LOAD2
V
OUT2
3.3V
5A
V
OUT1
5V
5A
+
C
LOAD1
10
0.01F
25V
3
8
R
HYST
681k
COMPOUT
FB
RESET
9
6
5
10k
1%
P
RESET
1645 F17
10k
28k
1%
14.7k
1%
10k
1%
10k
V
CC2
SENSE2 GATE2
COMP
+
P
RESET2
Q1A
Q1B
IRF7313
10
Q2A
Q2B
IRF7313
V
OUT
5V或
3.3V
5A
0.1F
25V
10
0.1F
25V
R2
10k
13
12
1
2
3
RESET
1645 F18
