MIC4575_09 MICREL [Micrel Semiconductor], MIC4575_09 Datasheet - Page 8

• Manufacturer Part Number: MIC4575_09
• Description: 200kHz Simple 1A Buck Regulator
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
July 2009
8V to 18V
C1 AVX
C2 AVX
C4 AVX
C5 AVX
D1 Motorola
D2 Motorola
T1 Coiltronics
22µF
35V
V
C1
IN
V
4V to 15V
150µF
IN
35V
C1
5
1
C1
C2
D1 Motorola 1N5819
L1
U2 National LM358
SHDN
V
MBRS130LT3
MBRS130LT3
IN
5
1
MIC4575BU
Figure 14. Adjustable (0V–12V) Output-Voltage Regulator
SHDN
V
GND
IN
MIC4575BT
3
MBRS130LT3
GND
Figure 15. Low Output-Voltage Regulator (1V)
U1
3
SW
FB
2
4
SW
FB
D1
Figure 13. Split ±5V Supply
2
4
220µF
10V
C5
D1
1N5819
2
68µH
L1
+I
DC
68µH
T1
8
40% then – I
40% then – I
+ –I
+V
1
4
3
V
1
L1
249
1%
R1
– 0.5V
R2
3.01k
1%
R1
1.00K
1%
+ 0.5V
MBRS130LT3
A
3
2
D2
U2
LM358
C3
3300pF
1.00k
1%
R2
× (1 – DC)
330µF
16V
C2
+V
-V
-5V/0.5A
at V
Load Regulation 5%
5V/0.5A
OUT
OUT
C2
220µF
10V
C4
220µF
10V
IN
/+I
/-I
15V
OUT
OUT
1V/1A
V
R3
1k
OUT
M9999-072909
MIC4575