MIC4575 Micrel Semiconductor, MIC4575 Datasheet - Page 7

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

MIC4575
8V to 18V
C1 AVX
C2 AVX
C4 AVX
C5 AVX
D1 Motorola
D2 Motorola
T1 Coiltronics CTX68-4P, DCR = 0.238
22µF
35V
V
C1
IN
8V to 18V
22µF
35V
V
C1
IN
4.75V to 5.25V
Figure 12. Low Output-Noise Regulator (5mV Output Ripple )
5
1
150µF
C1 AVX
C2 AVX
C4 AVX
D1 Motorola
T1 Coiltronics CTX68-4P, DCR = 0.238
L1 Coilcraft
35V
SHDN
V
TPSE226M035R0300, ESR = 0.3
TPSE227M010R0100, ESR = 0.1
TPSE227M010R0100, ESR = 0.1
TPSE227M010R0100, ESR = 0.1
MBRS130LT3
MBRS130LT3
C1
IN
MIC4575BU
5
1
SHDN
V
GND
Figure 11. 5V to –5V/0.3A Buck-Boost Converter
IN
C1 Nichicon
C2 Nichicon
D1 Motorola
L1 Coiltronics PL52A-15-500, DCR = 0.054
MIC4575BU
3
MBRS130LT3
GND
3
1
5
SW
TPSE226M035R0300, ESR = 0.3
TPSE227M010R0100, ESR = 0.1
TPSE227M010R0100, ESR = 0.1
MBRS130LT3
DO1608C-102
FB
V
SHDN
IN
2
4
MIC4575BT
SW
FB
D1
Figure 13. Split 5V Supply
UPL1V151MPH, ESR = 0.12
UPL1C681MPH, ESR = 0.065
1N5819
GND
3
220µF
2
4
10V
C5
D1
MBRS130LT3
SW
Through Hole
FB
4
1
2
1.00K
2
4
68µH
4-112
1%
R2
T1
+I
DC
DC
DC
68µH
T1
OUT
1000pF
R1
3.01k
1%
40% then
40% then
10K
+ I
R3
+V
C4
3
2
4
3
V
1
OUT
IN
L1
OUT
C4
220µF
10V
1µH
L1
R4
5.1K
R2
3.01k
1%
R1
1.00K
1%
0.5V
C3
0.01µF
MBRS130LT3
0.5V
1A
I
I
OUT
OUT
D2
1N5819
R2
3.01k
1%
R1
1.00K
1%
+I
C3
3300pF
D1
I
OUT
OUT
(1
C3
3300pF
+V
L1
15µH
-V
-5V/0.5A
at V
Load Regulation
C2
680µF
16V
DC)
5V/0.5A
OUT
OUT
-5V/0.3A
IN
C2
220µF
10V
C4
220µF
10V
/+I
/-I
15V
OUT
OUT
5mV
5V/1A
C2
220µF
10V
V
OUT
P-P
5%
April 1998•
Micrel