mic4576 Micrel Semiconductor, mic4576 Datasheet - Page 7

• Manufacturer Part Number: mic4576
• Description: Mic4576 200khz Simple 3a Buck Regulator
• Manufacturer: Micrel Semiconductor

Note 2:
March 2006
Figure 3. 8V–24V to 5V/3A Buck Converter
8V to 24V
470µF
Surface-mount component.
35V
C1
C1 Nichicon
C2 Nichicon
D1 Motorola
L1 Coiltronics
L1 Bi
5
1
SHDN
V
MIC4576-5.0BT
IN
UPL1J471MPH, ESR = 0.046Ω
UPL1C102MPH, ESR = 0.047Ω
MBR5822
PL52C-33-1000, DCR = 0.036
HM77-30004, DCR = 0.045Ω, Note 2
Through Hole
GND
3
SW
FB
8V to 36V
2
4
V
IN
470µF
63V
C3
16V to 36V
C1, C3 Nichicon
C2, C4 Nichicon
D1, D2 Motorola
L1, L2
R1, R2 KRL
U3
D1
1N5822
470µF
Figure 5. 16V–36V to 12V/3A Buck Converter
63V
33µH
C1
C1
470µF
63V
L1
Figure 6. Parallel Switching Regulators
5
1
5
1
C1 Nichicon
C2 Nichicon
D1 Motorola
L1 Bi
SHDN
V
Coiltronics PL52C-33-1000, DCR = 0.036
National
SHDN
V
MIC4576-5.0BT
IN
MIC4576-5.0BT
IN
5
1
5V/3A
C2
1000µF
16V
SHDN
V
GND
IN
U2
GND
U1
MIC4576BT
3
3
UPL1J471MRH, ESR = 0.039 Ω
UPL1C102MPH, ESR = 0.047 Ω
MBR360
SP-1-A1-0R100J
LM358
GND
3
Through Hole
SW
SW
UPL1J471MPH, ESR = 0.039Ω
UPL1C102MPH, ESR = 0.047Ω
MBR360
HM77-29006, DCR = 0.08Ω
FB
FB
2
4
4
2
SW
FB
7
2
4
1
D2
MBR360
D1
MBR360
0.01µF
33µH
33µH
L1
C5
L2
8
4
V
MBR360
IN
68µH
L1
10K
Figure 4. 8V–36V to 5V/3A Buck Converter
8V to 36V
R3
2
3
470µF
63V
C1
0.1Ω
C1 Nichicon
C2 Nichicon
D1 Motorola
L1 Coiltronics PLS2C-33-1000, DCR = 0.036
L1 Bi
0.1Ω
R1
R2
13.0k
1%
R1
1.50k
1%
U3
LM358
R2
5
1
12V/3A
C2
1000µF
16V
C4
1000µF
16V
SHDN
V
C2
1000µF
16V
MIC4576-5.0BT
IN
UPL1J471MRH, ESR = 0.039Ω
UPL1C102MPH, ESR = 0.047Ω
MBR360
HM77-30004, DCR = 0.045Ω, Note 2
Through Hole
GND
3
5V/4A
V
OUT
SW
FB
2
4
D1
MBR360
33µH
L1
5V/3A
C2
1000µF
16V
MIC4576