 English |
|
|
|
|
|
|
|
| MIC4685 Datasheet, PDF (13/15 Pages) Micrel Semiconductor – 3A SPAK SuperSwitcher™ Buck Regulator | |||
| |||
| ◁ |
MIC4685
Micrel
Recommended Components for a Given Output Voltage (Standard Configuration)
VOUT IOUT* R1
5.0V 2.0A 3.01k
R2
976â¦
3.3V 2.4A 3.01k 1.78k
2.5V 2.35A 3.01k 2.94k
1.8V 2.0A 3.01k 6.49k
VIN
8Vâ30V
8Vâ26V
7Vâ23V
6Vâ16V
C1
33µF, 35V
Vishay-Dale
595D336X0035R2T
33µF, 35V
Vishay-Dale
595D336X0035R2T
33µF, 35V
Vishay-Dale
595D336X0035R2T
47µF, 25V
Vishay-Dale
595D476X0025D2T
D1
3A, 40V
Schottky
B340A
3A, 40V
Schottky
B340A
3A, 40V
Schottky
B340A
3A, 40V
Schottky
B340A
L1
39µH
Sumida
CDRH127-390MC
39µH
Sumida
CDRH127-390MC
39µH
Sumida
CDRH127-390MC
39µH
Sumida
CDRH127-390MC
* Maximum output current at minimum input voltage. See SOA curves for maximum output current vs. input voltage.
C5
330µF, 6.3V
Vishay-Dale
594D337X06R3D2T
330µF, 6.3V
Vishay-Dale
594D337X06R3D2T
330µF, 6.3V
Vishay-Dale
594D337X06R3D2T
330µF, 6.3V
Vishay-Dale
594D337X06R3D2T
Table 2. Recommended Components for Common Ouput Voltages
D2***
JP3
B340
J1
VIN
(34V transient)
C1
ON
33µF
35V
OFF
J3
GND
C2
0.1µF
50V
U1 MIC4685BR
2 IN
SW 6
BS 1
5 EN
FB 3
GND
4, Tab
L1
39µH
C3
0.33µF
50V
D1
B340A
* C4 can be used to provide additional stability
and improved transient response.
Note: optimized for 5VOUT
** C6 Optional
*** D2 is not used for standard configuration and JP3 is open.
R1
3.01k
C4*
optional
R2
R3
R4
R5
6.49k 2.94k 1.78k 976â¦
1
3
5
7
JP1a JP1b JP1c JP1d
1.8V 2.5V 3.3V 5.0V
2
4
6
8
Figure 4. Evaluation Board Schematic Diagram
C5
330µF
6.3V
J2
VOUT
2A
C6**
C7
0.1µF
50V
J4
GND
September 2002
13
MIC4685
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese