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MIC4574-3.3BN Datasheet(PDF) 4 Page - Micrel Semiconductor

Part # MIC4574-3.3BN
Description  200kHz Simple 0.5A Buck Regulator
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC4574-3.3BN Datasheet(HTML) 4 Page - Micrel Semiconductor

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MIC4574
Micrel, Inc.
M9999-062105
4
June 2005
Block Diagrams
200kHz
Oscillator
1.23V
Bandgap
0.5A
Switch
Thermal
Shutdown
Current
Limit
Driver
Internal
Regulator
FB
SW
GND
VIN
+24V max.
CIN
COUT
L1
D1
Shutdown
Enable
SHDN
VOUT
MIC4574 [Adjustable]
R1
R2
Com-
parator
Error
Amp.
V
OUT
V
REF
R1
R2
+ 1
R1
R2
V
OUT
VREF
1
200kHz
Oscillator
1.23V
Bandgap
0.5A
Switch
Thermal
Shutdown
Current
Limit
Driver
Internal
Regulator
FB
SW
GND
VIN
+24V max.
CIN
COUT
L1
D1
Shutdown
Enable
SHDN
VOUT
MIC4574-x.x
R1
R2
Com-
parator
Error
Amp.
Block Diagram with External Components
Adjustable Step-Down Regulator
Block Diagram with External Components
Fixed Step-Down Regulator


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