ltc1645cs8-trpbf Linear Technology Corporation, ltc1645cs8-trpbf Datasheet - Page 16

• Manufacturer Part Number: ltc1645cs8-trpbf
• Description: Dual-channel Hot Swap Controller/power Sequencer
• Manufacturer: Linear Technology Corporation

APPLICATIO S I FOR ATIO
LTC1645
16
FAULT
3.3V
V
V
IN2
IN1
5V
*LRF1206-01-R005-J (IRC)
10k
3.3V
V
V
IN1
IN2
5V
R1
47.5k
1%
R2
10k
1%
U
BOTH CURRENT LIMITS: 10A
13k
1%
10k
10k
D1
1N4148
U
10
10k
R1
4
ON
FAULT
V
CC1
0.005 *
14
11.3k
1%
22.6k
1%
SENSE1
W
13
10
4
ON
FAULT
Figure 17. Ramping Up 5V Followed by 3.3V
IRF7413
GATE1
V
TIMER
CC1
0.33 F
Figure 18. Power Supply Multiplexer
14
12
10
11
D1
1/2 BAT54C
(14-LEAD)
0.33 F
LTC1645
SENSE1
U
TIMER
D2
1/2
BAT54C
0.01 F
25V
13
Q1A
11
GND
IRF7313
GATE1 V
V
7
CC2
(14-LEAD)
0.005 *
LTC1645
12
10
1
SENSE2
Q1B
CC2
2
1
COMPOUT
0.1 F
25V
IRF7413
GND
COMP
SENSE2
GATE2
RESET
7
3
10
FB
2
Q2A
COMPOUT
+
COMP
IRF7313
8
9
6
5
GATE2
RESET
3
FB
10
+
R
681k
HYST
Q2B
0.01 F
25V
8
9
6
5
0.1 F
25V
10k
1%
28k
1%
1645 F18
14.7k
1%
10k
1%
R2
10k
10k
Q3
PN2222
1645 F17
10k
+
+
V
5V OR
3.3V
5A
OUT
C
C
P RESET2
P RESET
LOAD2
LOAD1
V
3.3V
5A
V
5V
5A
OUT2
OUT1
1645fa