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LTC4212CMS Datasheet(PDF) 19 Page - Linear Technology

Part # LTC4212CMS
Description  Hot Swap Controller with Power-Up Timeout
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4212CMS Datasheet(HTML) 19 Page - Linear Technology

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19
LTC4212
4212f
OPERATIO
Figure 5. LTC4212 Autoretry Application
+
VCC
SENSE
LTC4212
9
1
10
23
87
10
µF
+
10
µF 2
3
1
5V
2.5V
1.5A
3.3V
1.5A
4212 F05
6
GATE
PGT
4
PGF
TIMER
CTIMER
0.01
µF
PGI
ON
VCC
5V
GND
Z1 = SMAJ10A (TVS)
RAUTO
1M
RX
10
Ω
RSENSE
0.007
Ω
EDGE
CONNECTOR
(MALE)
M1
Si4410DY
Z1
R4
10k
R6
2.1k
R5
10k
RG
100
Ω
FAULT
GND
+
10
µF
LT1963-2.5
CPGT
180nF
CPGF
18pF
CX
10nF
BACKPLANE
CONNECTOR
(FEMALE)
5
+
10
µF 2
3
1
+
10
µF
LT1963-3.3
4
3
LTC1326-2.5
GND
VCCA
1
VCC3
6
RST
2
VCC25
CAUTO
2
µF
Figure 6. Autoretry Sequence
VCC
ON
VREF
2.34V
TIMER
GATE
DC/DC
CONVERTER
OUTPUT
VCC – VSENSE
FAULT
PGT
PGI
PGF
4212 F06
12 3
45 6
7 8
10
9
11
12
131415
16 17
18
19
POWER GOOD
TIMER ENABLED
(CPGT)
POWER GOOD
TIMER ENABLED
(CPGT)
0.95V
0.65V
0.95V
0.65V
2ND
TIMING
CYCLE (CTIMER)
1ST
TIMING
CYCLE (CTIMER)
1.316V
1.31V
0.455V
0.455V
2ND
TIMING
CYCLE (CTIMER)
1ST
TIMING
CYCLE (CTIMER)
SOFT-START ACTIVE
SOFT-START ACTIVE
VREF
VREF
VREF
VCC – VSENSE =
50mV
VCC – VSENSE =
50mV
> 50mV, > 18
µs
> 50mV, > 18
µs



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