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Номер в каталоге
Компоненты Описание
LM2574(2003) Просмотр технического описания (PDF) - Micrel
Номер в каталоге
Компоненты Описание
производитель
LM2574
(Rev.:2003)
52kHz Simple 0.5A Buck Regulator
Micrel
LM2574 Datasheet PDF : 8 Pages
1
2
3
4
5
6
7
8
LM2574
Block Diagrams
Micrel
VIN
1
FEED-
BACK
4
INTERNAL
REGULATOR
FIXED GAIN
3.1k
ERROR AMP
+
1.0k
-
COMPARATOR
+
-
ON/OFF
1/2 AMP
SWITCH
DRIVER
1.23V
BAND-GAP
REFERENCE
52 kHz
OSCILLATOR
RESET
THERMAL
SHUTDOWN
CURRENT
LIMIT
5
ON/OFF
VIN
1
INTERNAL
REGULATOR
ON/OFF
FEED-
BACK
4
2
OUTPUT
FIXED GAIN
ERROR AMP
+
COMPARATOR
-
+
-
1/2 AMP
SWITCH
DRIVER
3
GND
1.23V
BAND-GAP
REFERENCE
52 kHz
OSCILLATOR
RESET
THERMAL
SHUTDOWN
CURRENT
LIMIT
5
ON/OFF
2
OUTPUT
3
GND
Note: Pin numbers are for the TO-220 package
Fixed Regulator
Adjustable Regulator
December 2003
7
M9999-122303
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