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MIC4574BWM 데이터 시트보기 (PDF) - Micrel
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MIC4574BWM
200kHz Simple 0.5A Buck Voltage Regulator
Micrel
MIC4574BWM Datasheet PDF : 6 Pages
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MIC4574
Block Diagrams
+24V max.
V
IN
C
IN
Shutdown
Enable
SHDN
Internal
Regulator
200kHz
Oscillator
Thermal
Shutdown
Current
Limit
Com-
parator
Error
Amp.
MIC4574-x.x
Driver
0.5A
Switch
1.23V
Bandgap
R1
R2
GND
SW
L1
D1
FB
Block Diagram with External Components
Fixed Step-Down Regulator
V
OUT
C
OUT
+24V max.
V
IN
Shutdown
Enable
SHDN
Internal
Regulator
200kHz
Oscillator
Thermal
Shutdown
Current
Limit
Com-
parator
Error
Amp.
MIC4574
[Adjustable]
Driver
1.23V
Bandgap
0.5A
Switch
GND
C
IN
V
OUT
R1
V
REF
R2
+ 1
R1 R2
V
OUT
1
V
REF
SW
L1
D1
V
OUT
C
OUT
R1
FB
R2
Block Diagram with External Components
Adjustable Step-Down Regulator
April 1998•
4-95
Micrel
4
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