LTC1647 LINER [Linear Technology], LTC1647 Datasheet - Page 40

• Manufacturer Part Number: LTC1647
• Description: Hot Swap Controller
• Manufacturer: LINER [Linear Technology]

LTC4211
TYPICAL APPLICATION
LOW COST OVERVOLTAGE PROTECTION
There is an alternative method to implementing the over-
voltage protection using a resistor divider at the FILTER
pin (see Figures 27 and 28). In this implementation, the
SLOW COMP is NULL in Normal Mode. Only the FAST
RELATED PARTS
PART NUMBER
LTC1421
LTC1422
LT1640AL/LT1640AH Negative Voltage Hot Swap Controller
LT1641-1/LT1641-2
LTC1642
LTC1644
LTC1647
LTC4230
40
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
ON/OFF
ON/OFF
FAULT
RESET
FAULT
RESET
Figure 27. LTC4211MS High Side Overvoltage Protection Implementation
(In Normal Mode, SLOW COMP Is Disabled. In Soft-Start Cycle, I
Figure 28. LTC4211MS Low Side Overvoltage Protection Implementation
(In Normal Mode, SLOW COMP Is Disabled. In Soft-Start Cycle, I
GND
GND
5V
5V
DESCRIPTION
Two Channels, Hot Swap Controller
Single Channel, Hot Swap Controller
Positive Voltage Hot Swap Controller
Single Channel, Hot Swap Controller
PCI Hot Swap Controller
Dual Channel, Hot Swap Controller
Triple Hot Swap Controller with Multifunction Current Control
CONNECTOR
CONNECTOR
BACKPLANE
BACKPLANE
(FEMALE)
(FEMALE)
●
FAX: [phone]
CONNECTOR
CONNECTOR
PCB EDGE
PCB EDGE
(MALE)
(MALE)
LONG
SHORT
SHORT
SHORT
LONG
LONG
SHORT
SHORT
SHORT
LONG
R3
10k
R4
10k
●
www.linear.com
10k
R5
10k
R6
Z1*
Z1*
R5
10k
R7
10k
R4
10k
R6
10k
R3
10Ω
R7
10Ω
C1
0.1μF
C1
0.1μF
4.3k
R8
R9
750Ω
C
10nF
TIMER
C
10nF
TIMER
COMP circuit breaker is available and the current limit
level is 150mV/R
current servo loop is at 50mV/R
should only turn on at/after the end of second cycle where
the RESET pin goes high.
1
2
3
4
5
1
2
3
4
5
RESET
ON
FILTER
TIMER
GND
RESET
ON
FILTER
TIMER
GND
LTC4211
LTC4211
COMMENTS
24-Pin, Operates from 3V to 12V and Supports – 12V
8-Pin, Operates from 2.7V to 12V
8-Pin, Operates from –10V to –80V
8-Pin, Operates from 9V to 80V, Latch-Off/Auto Retry
16-Pin, Overvoltage Protection to 33V
16-Pin, 3.3V, 5V and ±12V, 1V Precharge, PCI Reset Logic
8-Pin, 16-Pin, Operates from 2.7V to 16.5V
Operates from 1.7V to 16.5V
Z1 = 1SMA10A OR SMAJ10A
* OPTIONAL
SENSE
FAULT
GATE
Z1 = 1SMA10A OR SMAJ10A
* OPTIONAL
SENSE
FAULT
V
GATE
CC
FB
V
CC
FB
10
SOFTSTART
SOFTSTART
9
8
7
6
10
9
8
7
6
R
0.007Ω
SENSE
R
0.007Ω
SENSE
SENSE
Is Still 50mV/R
Is Still 50mV/R
Si4410DY
. During the soft-cycle, the inrush
Si4410DY
4211 F28
Q1
Q1
4211 F27
© LINEAR TECHNOLOGY CORPORA TION 2006
R1
36k
R2
15k
R1
3.6k
R2
750Ω
R8
750Ω
+
SENSE
+
SENSE
SENSE
C
C
LOAD
LT 0312 REV B • PRINTED IN USA
LOAD
V
5V
5A
OUT
. So, the heavy load
)
)
V
5V
5A
OUT
4211fb