MIC4575-3.3BU 查看數據表（PDF） - Micrel

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MIC4575-3.3BU

200kHz Simple 1A Buck Regulator

Micrel 

Micrel, Inc.

Application Information

The applications circuits that follow have been

constructed and tested. Refer to Application Note 15 for

additional information, including efficiency graphs and

manufacturer’s addresses and telephone numbers for

most circuits.

For a mathematical approach to component selection

and circuit design, refer to Application Note 14.

MIC4575

Figure 4. 6V–24V to 3.3V/1A Buck Converter

Low-Profile Surface Mount

Figure 1. 6V–24V to 3.3V/1A Buck Converter

Through Hole

Figure 5. 8V–24V to 5V/1A Buck Converter

Low-Profile Surface Mount

Figure 2. 8V–24V to 5V/1A Buck Converter

Through Hole

16V to 24V

C1

68µF

63V

5

SHDN

2

SW

MIC4575BT

1 VIN

4

FB

GND

3

L1

150µH

MBR160

12V/1A

R2

13.0k

1%

R1

1.50k

1%

C2

330µF

16V

C1 Nichicon

C2 Nichicon

D1 Motorola

L1 Sumida

MBR160

Figure 3. 16V–24V to 12V/1A Buck Converter

Through Hole

Note 2: Surface-mount component.

Figure 6. 16V–24V to 12V/1A Buck Converter

Low-Profile Surface Mount

Figure 7. 6V–24V to 3.3V/1A Buck Converter

Lower-Cost Surface Mount

July 2009

6

M9999-072909

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