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LSO2805S Datasheet, PDF (8/18 Pages) International Rectifier – HYBRID-HIGH RELIABILITY RADIATION HARDENED DC-DC CONVERTER | |||
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LSO SERIES
28V Input, Single/Dual Output
Fig. 2 - Single Output Block Diagram
DÂÂÂÂ 1
DÂÂÂÂ 2
SrÂÂÂ
Â
3 DÂuvivÂ
4 DÂuvivÂÃ
SrÂÂÂ
Â
VW
5
GhÂpu
EMI
Filter
UVLO &
Inhibit
9
Bias
Supply 9
Shutdown
Latch
LSO28XXS
FET
Driver
Overcurrent
Protection
Bus
Current
Telemetry
9 4.4V
Reg
9
8hÂrà 6
BÂ
ÂÂÂq
9
9
+
3:0
-
Oscillator
Ramp
Gen.
Sample &
Hold
Soft Start
Feedback
Trigger
Error
Amplifier
Ref &
S.S.
OVP
13 PÂÂÂÂÂ
12 PÂÂÂÂÂ
7 DÂÂÂÂÃ
8ÂÂ
Â
rÂÂ
UryrÂrÂÂ
Â
10 6HQVH
9 TrÂÂr
8 PÂÂÂÂÂÃ
6qwÂÂÂ
11 PWQÃ6qw
Fig. 3 - Dual Output Block Diagram
DÂÂÂÂ 1
DSÂrÂÂÂÂÂÂ
 2
DÂuviv 3
DÂuvivÂÃ
SrÂÂÂ
Â
4
VGhWÂpu 5
8hÂrà 6
BÂ
ÂÂÂq
LSO28XXD
EMI
Filter
UVLO &
Inhibit
9
Bias
Supply 9
Shutdown
Latch
9
FET
Driver
9
Overcurrent
Protection
Bus
Current
Telemetry
9 4.4V
Reg
9
Error
Amplifier
2XW
2XW
Oscillator
+
3:0
-
Ramp
Gen.
Sample &
Hold
Soft Start
Feedback
Trigger
Ref &
S.S.
-Out
OVP
5V
Reg
+Out
OVP
13 PÂÂÂÂÂ
12 PSrÂÂÂÂÂÂ
ÂÂÂ
11 PÂÂÂÂÂ
7 D8UÂrÂÂyÂ
rÂÂ
rÂÂÃÂrÂÂÂ
Â
8
PÂÂÂÂÂÃ
6qwÂÂÂ
9 PWQÃ6qw
10 PWQÃ6qw
8
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