MIC69301-1.2YME datasheet(9/11 Pages) MICREL

Part #	MIC69301-1.2YME

Description	Single Supply VIN, Low VIN, Low VOUT, 3A LDO

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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9 / 11 page

Micrel, Inc.

MIC69301/2/3

March 2010

9

M9999-030310-E

The heat sink may be significantly reduced in

applications where the minimum input voltage is known

and is large compared with the dropout voltage. Use a

series input resistor to drop excessive voltage and

distribute the heat between this resistor and the

regulator. The low dropout properties of Micrel Super

βeta PNP® regulators allow significant reductions in

regulator power dissipation and the associated heat sink

without compromising performance. When this technique

is employed, a capacitor of at least 1.0µF is needed

directly between the input and regulator ground.

Refer to “Application Note 9” for further details and

examples on thermal design and heat sink applications.

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