MIC4684YM Ver la hoja de datos (PDF) - Micrel

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MIC4684YM

2A High-Efficiency SuperSwitcher™ Buck Regulator

Micrel 

Micrel, Inc.

Functional Characteristics

Switching Frequency Foldback

200kHz

70kHz

TIME

Normal

Operation

Short

Circuit

Operation

Frequency Foldback

The MIC4684 folds the switching frequency back during a hard short

circuit condition to reduce the energy per cycle and protect the device.

Load Transient

VIN = 12V

VOUT = 5V

IOUT = 1.0A to 0.1A

TIME (100ms/div.)

MIC4684

5.1V

5V

1A

0A

January 2010

8

M9999-012610

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