LM2574-5.0BWM MICREL [Micrel Semiconductor], LM2574-5.0BWM Datasheet - Page 7

• Manufacturer Part Number: LM2574-5.0BWM
• Description: 52kHz Simple 0.5A Buck Regulator
• Manufacturer: MICREL [Micrel Semiconductor]

Block Diagrams
December 2003
LM2574
FEED-
BACK
V IN
1
4
Note: Pin numbers are for the TO-220 package
REFERENCE
BAND-GAP
1.23V
3.1k
1.0k
+
-
FIXED GAIN
ERROR AMP
OSCILLATOR
Fixed Regulator
52 kHz
+
-
COMPARATOR
REGULATOR
INTERNAL
RESET
SHUTDOWN
THERMAL
ON/OFF
DRIVER
CURRENT
LIMIT
1/2 AMP
SWITCH
5
2
3
ON/OFF
OUTPUT
GND
7
FEED-
BACK
V IN
1
4
REFERENCE
BAND-GAP
1.23V
+
-
FIXED GAIN
ERROR AMP
OSCILLATOR
52 kHz
Adjustable Regulator
+
-
COMPARATOR
REGULATOR
INTERNAL
RESET
SHUTDOWN
THERMAL
ON/OFF
DRIVER
CURRENT
LIMIT
1/2 AMP
SWITCH
M9999-122303
5
2
3
ON/OFF
OUTPUT
GND
Micrel