LTC4211 LINER [Linear Technology], LTC4211 Datasheet - Page 36

• Manufacturer Part Number: LTC4211
• Description: Hot Swap Controller with Multifunction Current Control
• Manufacturer: LINER [Linear Technology]

LTC4211
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
LT1641-1/LT1641-2
LTC1642
LTC1644
LTC1647
LTC4230
36
TYPICAL APPLICATIO S
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
ON/OFF
FAULT
RESET
GND
ON/OFF
5V
FAULT
RESET
GND
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
5V
CONNECTOR
BACKPLANE
(FEMALE)
CONNECTOR
BACKPLANE
DESCRIPTION
Two Channels, Hot Swap Controller
Single Channel, Hot Swap Controller
Negative Voltage 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
(FEMALE)
CONNECTOR
PCB EDGE
(MALE)
CONNECTOR
PCB EDGE
(MALE)
LONG
SHORT
SHORT
SHORT
LONG
U
LONG
SHORT
SHORT
SHORT
LONG
R3
10k
www.linear.com
R4
10k
10k
R5
Z1*
10k
R6
Z1*
R4
10k
R6
10k
R5
10k
R7
10k
R7
10
C1
0.1 F
R3
10
C1
0.1 F
4.3k
R8
R9
750
C
10nF
TIMER
C
10nF
COMP circuit breaker is available and the current limit level
is 150mV/R
rent servo loop is at 50mV/R
should only turn on at/after the end of second cycle where
the RESET pin goes high.
TIMER
1
2
3
4
5
1
2
3
4
5
RESET
ON
FILTER
TIMER
GND
RESET
ON
FILTER
TIMER
GND
LTC4211
LTC4211
Z1 = 1SMA10A OR SMAJ10A
* OPTIONAL
SENSE
FAULT
GATE
SENSE
FAULT
V
GATE
Z1 = 1SMA10A OR SMAJ10A
* OPTIONAL
FB
CC
V
SENSE
CC
FB
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
SOFTSTART
SOFTSTART
10
9
8
7
6
10
9
8
7
6
R
0.007
. During the soft-cycle, the inrush cur-
SENSE
R
0.007
SENSE
is Still 50mV/R
is Still 50mV/R
Si4410DY
4211 F30
Q1
Si4410DY
Q1
LINEAR TECHNOLOGY CORPORATION 2001
4211 F29
R1
3.6k
R2
750
R8
750
SENSE
R1
36k
R2
15k
+
+
SENSE
SENSE
LT/TP 0702 2K • PRINTED IN USA
C
. So, the heavy load
LOAD
C
LOAD
V
5V
5A
)
)
OUT
V
5V
5A
OUT
4211f