MIC4575 Micrel Semiconductor, MIC4575 Datasheet - Page 10

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

April 1998•
MIC4575
8V to 24V
C1
68µF
63V
6V to 18V
V
IN
22µF
35V
V
8V to 24V
C1
IN
V
150µF
IN
35V
C1 AVX
C2 AVX
C3 AVX
C4 AVX
D1 Motorola
D2 Motorola
T1 Coiltronics CTX150-4, DCR = 0.372
Q1 Siliconix
C1
5
1
1
5
SHDN
V
IN
V
SD
MIC4575BU
U1 Micrel
U2 National
C1 Nichicon
C2 Nichicon
D1 Motorola
D2 Motorola
DZ1 Motorola
L1 Bi
R1 KRL
IN
5
1
MIC4575BT
U1
SHDN
V
GND
GND
IN
3
MIC4575BU
U1
C1 Nichicon
C2 Nichicon
C4 AVX
D1 Motorola
L1 Coiltronics PL52B-68-500, DCR = 0.095
TPSE226M035R0300, ESR = 0.3
TPSE686M020R0150, ESR = 0.15
TPSE686M020R0150, ESR = 0.15
TPSE686M020R0150, ESR = 0.15
MBRS130LT3
MBRS130LT3
Si 9435, PMOS
Figure 20. 6V–18V to Split 12V/100mA Supply
3
GND
SW
3
FB
V
FB
SW
Figure 19. Remote-Sensing Regulator
MIC4575BT
LM358
UPL1V151MPH, ESR = 0.12
UPL1C331MPH, ESR = 0.12
1N5819
1N5819
1N5244
HM77-11003, DCR = 0.233
SP-1/2-A1-0R100J
2
4
SW
FB
2
4
Figure 21. 1A Battery Charger
UPL1J680MPH, ESR = 0.17
UPL1J680MPH, ESR = 0.17
TPSE227M010R0100, ESR = 0.1
MBRS160
D3
1N4148
2
4
Si9435
Q1
D1
1N5819
D1
MBR160
C4
68µH
L1
V
3
4
1/2 LM358
IN
4-115
U2B
0.01µF
T1
0.1µF
113k
1%
R3
7
C3
C2
68µF
C2
68µF
63V
0.01µF
8
4
8
C3
MBRS130LT3
V
I
OUT
IN min
6
5
D1
MBRS130LT3
2
D2
=
150µH
68µH
L1
10k
T1
1%
R2
1.23V
R1
=
R1
30
R2
3.01k
1%
R3
1.00k
1%
R4
10
1
V
BATT
0.9
10 ft Wire
+V
+V
–V
–V
0.5
R2
13.0k
1%
R1
1.50K
1%
R3
1k
DZ1
1N5244
14V
SENSE
SENSE
R2
+ 2.5V
R2
10k
R4
C2
330µF
16V
1N5819
R3
0.1
R1
D2
C5
3300pF
68µF
20V
C4
(–11V to –12V)
–12V/100mA
12V/100mA
V
2–8 Cells
I
1A
OUT
BATT
–V
V
C3
68µF
20V
OUT
OUT
5V/1A
V
C4
220µF
10V
OUT
Micrel
4