LM2574-12BN Micrel Inc, LM2574-12BN Datasheet - Page 7

• Manufacturer Part Number: LM2574-12BN
• Description: IC REGULATOR BUCK 0.5A 8-DIP
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of LM2574-12BN

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 12V
• Current - Output: 500mA
• Frequency - Switching: 52kHz
• Voltage - Input: 4.75 ~ 40 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

Block Diagrams
July 2005
LM2574
F EED -
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
E R R OR A M P
OSCILLATOR
Fixed Regulator
52 kHz
+
-
REGULATOR
COM PARAT OR
INTERNAL
RESET
SHUTDOWN
THERMAL
ON/OFF
DRIVER
CURRENT
LIMIT
1/2 AMP
SW ITCH
5
2
3
ON/OFF
OUTPUT
GND
7
F EED -
BACK
V IN
1
4
REFERENCE
BAND-GAP
1.23V
+
-
FIXED GAIN
E R R OR A M P
OSCILLATOR
52 kHz
Adjustable Regulator
+
-
REGULATOR
COM PARAT OR
INTERNAL
RESET
SHUTDOWN
THERMAL
ON/OFF
DRIVER
CURRENT
LIMIT
1/2 AMP
SW ITCH
M9999-072805
Micrel, Inc.
5
2
3
ON/OFF
OUTPUT
GND