LTC4212 LINER [Linear Technology], LTC4212 Datasheet - Page 19

• Manufacturer Part Number: LTC4212
• Description: Hot Swap Controller with Power-Up Timeout
• Manufacturer: LINER [Linear Technology]

OPERATIO
V
CONVERTER
CC
– V
OUTPUT
TIMER
DC/DC
FAULT
SENSE
GATE
PGT
PGF
U
V
PGI
GND
ON
CC
V
2.34V
5V
CC
1.316V
1 2 3
CONNECTOR
BACKPLANE
(FEMALE)
CYCLE (C
TIMING
1ST
V
REF
TIMER
CONNECTOR
(MALE)
EDGE
)
4 5 6
SOFT-START ACTIVE
CYCLE (C
V
Z1 = SMAJ10A (TVS)
CC
C
TIMING
– V
AUTO
50mV
R
2 F
2ND
AUTO
1M
SENSE
V
0.95V
0.65V
Figure 5. LTC4212 Autoretry Application
REF
TIMER
Z1
=
)
7 8
Figure 6. Autoretry Sequence
C
0.01 F
TIMER ENABLED
R
10
10
TIMER
POWER GOOD
X
C
10nF
> 50mV, > 18 s
1
5
X
(C
ON
FAULT
GND
TIMER
PGT
V
0.455V
CC
)
2
9
R
0.007
SENSE
9
LTC4212
SENSE
10
PGT
8
3
C
180nF
100
PGT
Si4410DY
R
1.31V
G
GATE
11
M1
PGF
7
PGI
4
12
CYCLE (C
C
18pF
+
PGF
6
TIMING
1ST
10 F
V
REF
TIMER
R4
10k
13 14 15
)
R5
10k
R6
2.1k
SOFT-START ACTIVE
+
+
CYCLE (C
V
CC
1
1
3
6
TIMING
– V
50mV
10 F 2
10 F 2
2ND
LT1963-2.5
LT1963-3.3
V
RST
CCA
SENSE
V
0.95V
0.65V
LTC1326-2.5
TIMER
REF
GND
=
)
16 17
4
V
TIMER ENABLED
3
+
3
+
V
CC25
POWER GOOD
CC3
> 50mV, > 18 s
(C
10 F
10 F
1
2
PGT
0.455V
)
18 19
4212 F05
5V
2.5V
1.5A
3.3V
1.5A
LTC4212
4212 F06
19
4212f