MIC4574-5.0BWM MICREL [Micrel Semiconductor], MIC4574-5.0BWM Datasheet - Page 2

• Manufacturer Part Number: MIC4574-5.0BWM
• Description: 200kHz Simple 0.5A Buck Voltage Regulator
• Manufacturer: MICREL [Micrel Semiconductor]

Ordering Information
Pin Configuration
Pin Description
April 1998•
MIC4574
Pin Number
N Package
1
2
3
4
5
7
8
SGND
PGND
SHDN
FB
WM Package
Pin Number
1
2
3
4
10
11
12
13
14
1
2
3
4
5
6
7
8
9
8-Pin DIP (N)
Part Number
MIC4574-3.3BN
MIC4574-5.0BN
MIC4574BN
MIC4574-3.3BWM
MIC4574-5.0BWM
MIC4574BWM
Pin Name
SGND
PGND
SHDN
8
7
6
5
SW
NC
NC
NC
NC
NC
V
NC
NC
NC
FB
IN
NC
SW
NC
V
IN
Adjustable
Adjustable
Voltage
3.3V
5.0V
3.3V
5.0V
Pin Function
Not internally connected. Solder to printed circuit for maximum heat transfer.
Not internally connected. Solder to printed circuit for maximum heat transfer.
Feedback (Input): Output voltage feedback to regulator. Connect to output of
supply for fixed versions. Connect to 1.23V tap of resistive divider for
adjustable versions.
Signal Ground
Shutdown (Input): Logic low enables regulator. Logic high (> 2.4V) shuts
down regulator.
Power Ground
Not internally connected. Solder to printed circuit for maximum heat transfer.
Not internally connected. Solder to printed circuit for maximum heat transfer.
Not internally connected. Solder to printed circuit for maximum heat transfer.
Supply Voltage (Input): Unregulated +4V to +24V supply voltage.
Not internally connected. Solder to printed circuit for maximum heat transfer.
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Shottky diode.
Not internally connected. Solder to printed circuit for maximum heat transfer.
Not internally connected. Solder to printed circuit for maximum heat transfer.
Temperature Range
4-93
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
SGND
PGND
SHDN
NC
NC
NC
FB
1
2
3
4
5
6
7
14-Lead Wide SOIC (WM)
14-lead SOIC
14-lead SOIC
14-lead SOIC
8-pin DIP
8-pin DIP
8-pin DIP
Package
14
13
12
11
10
9
8
NC
NC
SW
NC
V
NC
NC
IN
Micrel
4