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LTC1421 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC1421
Description  Hot Swap Controller
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1421 Datasheet(HTML) 7 Page - Linear Technology

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LTC1421/LTC1421-2.5
BLOCK DIAGRAM
Figure 1. Nominal Operation Switching Waveforms
Figure 2. Fault Detection Switching
CPON
CON1
t1
CON2
RESET
DISABLE
POR
1421 F01
PWRGD
t2
t3
t4
t6
t5
t7
CPON
VCCLO – SETLO
t9
FAULT
RESET
POR
1421 F02
PWRGD
t2
t5
t11
t6
t10
SWITCHI G TI E WAVEFOR S
–
+
+
–
+
+
– VTRIP
+
–
+
–
50mV
50mV
CPON
AUXVCC
VCCHI
SETLO
CP1
CP2
VCCLO
SETHI
GATELO
RAMP
GATEHI
VOUTHI
VOUTLO
19
22
23
18
21
10
17
16
20
VCC
FAULT
CON1
CON2
POR
DISABLE
9
24
4
1
2
3
5
20
µA
VCC
CP3
CP4
CP5
73.5k
N1
N2
AUXVCC
FB
REF
11
8
PWRGD
6
RESET
7
COMPOUT
15
COMP –
14
COMP +
13
1421 BD
71.5k
26.7k
20
µA
20
µA
1.232V
REFERENCE
CHARGE
PUMP
UNDERVOLTAGE
LOCKOUT
RESET
TIMING
VCC
VCC
VCC
–
+
GND
DIGITAL CONTROL
12



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