MIC4575 Micrel Semiconductor, MIC4575 Datasheet - Page 8

• Manufacturer Part Number: MIC4575
• Description: 200kHz Simple 1A Buck Voltage Regulator
• Manufacturer: Micrel Semiconductor

April 1998•
MIC4575
C1 Nichicon
C2 Nichicon
D1 Motorola
L1 Coiltronics PL52B-68-500, DCR = 0.095
U2 National
Q1 Siliconix
R1 KRL
V
I
OUT
IN min
V
4V to 15V
150µF
IN
9V to 24V
35V
1.23V
C1
150µF
R5
35V
V
C1
V
4V to 24V
IN
BATT
0.9
150µF
35V
V
C1
C1 Nichicon UPL1V151MPH, ESR = 0.12
C2 Nichicon UPL1C331MPH, ESR = 0.12
D1 Motorola 1N5819
L1 Coiltronics PL52B-68-500, DCR = 0.095
U2 National LM358
Figure 14. Adjustable (0V–12V) Output-Voltage Regulator
UPL1V151MPH, ESR = 0.12
UPL1C331MPH, ESR = 0.12
1N5819
LM358
VN2222LL
SP-1/2-A1-0R250J
IN
R2
R1
5
1
5
1
2.5V
SHDN
V
IN
SHDN
V
C1 Nichicon
C2 Nichicon
D1 Motorola
L1 Coiltronics PL52B-68-500, DCR = 0.095
U2 Micrel
MIC4575BT
IN
Figure 15. Low Output-Voltage Regulator (1V)
MIC4575BT
5
1
GND
Figure 16. 1A Battery Charger (6–8 cells)
SHDN
V
U1
GND
IN
3
3
MIC4575BT
GND
SW
FB
SW
3
FB
UPL1V151MPH, ESR = 0.12
UPL1C331MPH, ESR = 0.12
1N5819
LM4041CIZ-1.2
2
4
2
4
SW
FB
D1
1N5819
2
4
D1
1N5819
68µH
L1
VN2222LL
68µH
1000pF
L1
4-113
D1
1N5819
C4
68µH
200
1.00k
L1
1%
1%
Q1
R5
R2
R4
3k
2N4339
1
Q1
R1
200K
R2
15k
249
1
LM358
1%
R1
U2
0.25
0.01µF
R1
V
V
C3
R3
3.3K
IN min
IN min
U2
LM4041CIZ-1.2
C2
330µF
16V
3
2
U2
LM358
3
2
10K
1.00k
R3
1%
R2
R4
330
0.5W
V
and
V
0.9
OUT
OUT
(0-12V)/0.5A
V
OUT
330µF
DZ1
1N5244
14V
16V
V
Min = 60mV
C2
OUT
2.5V
1.5V
C2
330µF
16V
1N5819
D2
1V/1A
V
R3
1k
I
1A
OUT
OUT
6-8 Cells
V
BATT
Micrel
4