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LTC4221IGN Datasheet(PDF) 10 Page - Linear Technology

Part # LTC4221IGN
Description  Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4221IGN Datasheet(HTML) 10 Page - Linear Technology

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10
LTC4221
4221f
BLOCK DIAGRA
26V
9.5µA
109.5µA
CPO2
VCC2
CUR_LIMIT2
FPD2
+
–
CHARGE
PUMP 1
CHARGE
PUMP 2
UVLO
OSCILLATOR
VCC1
VCC1
VCC2
CPO1
CPO2
0.821V
ON1
COMPARATOR
SYSTEM
CONTROL
LOGIC
0.4V
VCC1
1
ON1
+
–
ON2
COMPARATOR
FILTER
COMPARATOR
TMRHI
COMPARATOR
FAULT
COMPARATOR
0.821V
FTRHI
TMRHI
TIMER
1.234V
FAULT_LO
105µA
1.8µA
+
–
+
–
1.24V
0.816V
+
–
0.617V
+
–
OV1
COMPARATOR
FB1
COMPARATOR
0.822V
+
–
16
9
ON2
8
FILTER
VCC1
3.8µA
VCC1
VCC1
FAULT
7
GND
10
GATE1
26V
PWRGD1
CHANNEL ONE
20µA1.9µA
VCC1
VCC1
9.5µA
12V
12V
109.5µA
CPO1
VCC1
CUR_LIMIT1
FPD1
TMRLO
COMPARATOR
TMRLO
0.4V
+
–
+
–
SLOW
COMPARATOR 1
CHANNEL 1
CONTROL
LOGIC
SLOWHI1
9mV TO 25mV
FASTHI1
2
VCC1
+
–
FAST
COMPARATOR 1
GATELO1
COMPARATOR
GATELO1
0.4V
+
–
SENSE1
+
–
VCC1
100mV
+
–
3
FB1
5
6
4
0.617V
+
–
OV2
COMPARATOR
FB2
COMPARATOR
0.822V
+
–
VCC2
GATE2
PWRGD2
4221 BD
CHANNEL TWO
+
–
SLOW
COMPARATOR 2
CHANNEL 2
CONTROL
LOGIC
SLOWHI2
9mV TO 25mV
FASTHI2
15
VCC2
+
–
FAST
COMPARATOR 2
GATELO2
COMPARATOR
GATELO2
0.4V
+
–
SENSE2
+
–
VCC2
100mV
+
–
14
FB2 12
11
13



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