LTC1647-3 Linear Technology, LTC1647-3 Datasheet - Page 18

• Manufacturer Part Number: LTC1647-3
• Description: Dual Hot Swap Controllers
• Manufacturer: Linear Technology

LTC1647-1/LTC1647-2/LTC1647-3
APPLICATIO S I FOR ATIO
18
3.3V V
SUPPLY
ID
WITH 1394 PHY
U
CONTROLLER
AND/OR USB
DEVICE BAY
U
FAULT 1
FAULT 2
Figure 13. V
ON1
ON2
V
V
W
V
V
0.1
0.1
FAULT1
FAULT2
GATE1
GATE2
R1
R7
V
V
V
V
ON1
ON2
V
R1
R7
R5
10
R6
10
ID
ID
C3
0.1 F
C6
0.1 F
Power Controller with Fault Status and Retry Sequence
FAULT 1 WAVEFORM SHOWN WITH C3
FAULT 2 WAVEFORM SHOWN WITHOUT C6
t1
V
U
LKO
1
2
3
4
t7
V
ON1/FAULT 1
ON2/FAULT 2
GND
CC
t2
SENSE 1
SENSE 2
t3
1/2 MMDF3N02HD
8
7
1/2 MMDF3N02HD
V
IH
LTC1647-2
t8
GATE 1
GATE 2
Q1
Q2
V
t9
IL
6
5
t4
R2
10
R8
10
t10
t5
V
LKO
V
IH
– V
C1
10nF
C4
10nF
LKH
R3**
R9**
t11
1647-1/2/3 F13
*
** R3, R4, R7 AND R8 ARE OPTIONAL DISCHARGE
t6
C
ON THE DEVICE REQUIREMENTS
RESISTORS WHEN DEVICES ARE POWERED-OFF
Q1, Q2: ON SEMICONDUCTOR
LOAD
IS USER-SELECTED BASED
+
+
C
C
LOAD
LOAD
DEVICE #1
DEVICE #2
*
*
R4**
R10**
USB PORT
USB PORT
1394 PHY
1394 PHY
AND/OR
AND/OR