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LTC3129 Datasheet(PDF) 21 Page - Linear Integrated Systems

Part # LTC3129
Description  18V Dual Input Micropower PowerPath Prioritizer with Backup Supply Monitoring
PDF  24 Pages
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Manufacturer  LINEAR [Linear Integrated Systems]
Direct Link  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LTC3129 Datasheet(HTML) 21 Page - Linear Integrated Systems

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LTC4420
21
4420f
For more information www.linear.com/LTC4420
Typical applicaTions
Early Power Failure Warning with Low Battery Indication
Prioritization with Failsafe Backup Supply
V1
ADJ
CMP1
V2UV
PFV1
V2
V2UV
GNDSW
4420 TA06
R3
1M
R7
1M
R8
1M
COUT
10µF
R2
75k
R1
41.2k
OUT
OUT
DS
BAT54
V2TEST
V2OK
CMPOUT1
V2DIS
LTC4420
GND
R5
1.37M
PFV1 THRESHOLD: V1 < 10.6V (V1 FALLING)
SWITCHOVER THRESHOLD: V1 < 10V (V1 FALLING)
V2UV THRESHOLD: V2 < 6V (V2 FALLING)
12V
WALL
ADAPTER
COIN
CELL
3V
2-CELL
Li-Ion
7.4V
R4
95.3k
C1
10µF
C2
10µF
+
RSN1
0.5
R3
1M
COUT
10µF
PFV1
V2OK
OUT
R2
75k
R1
41.2k
L1, 10µH
V1
ADJ
4420 TA05
GND
LTC4420
CMP1
V2
SW2
SW1
BST2
BST1
VOUT
VIN
COMP
FB
RUN
VCC
SNSGND
PWM
LTC3111
C3
1µF
C5
0.1µF
12V
TO OTHER
CIRCUITS
C4
0.1µF
R13
1M
R14
137k
C8
10µF
5V TO 15V
INPUT
C6
39pF
C7, 1nF R12, 44.2k
C1
22µF
R8
20k
R10
2.21M
R6
1M
R7
1M
R8
1M
R11
158k
C9
18pF
R5
2M
V2UV
R4
66.5k
GNDSW
OUT
V2TEST
V2DIS
CMPOUT1
V2OK
C2
10µF
4-CELL
14.8V
Li-ION
PFV1, V1 POWER FAILURE THRESHOLD: V1 < 10.6V (V1 FALLING)
SWITCHOVER THRESHOLD: V1 < 10V (V1 FALLING)
V2OK THRESHOLD: V2 < 12V (V2 FALLING)
+



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