EMF24 datasheet(4/5 Pages) ROHM

Part #	EMF24

Description	Power management (dual trnasistors)

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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4 / 5 page

EMF24 / UMF24N

Transistors

Rev.A

4/4

50

−0.5 −1

−2

−5

−10 −20

−50 −100

100

200

500

Ta=25˚C

VCE

=6V

EMITTER CURRENT : IE

(mA)

Fig.10 Gain bandwidth product vs.

emitter current

0.2

0.5

1

2

5

10

20

50

1

2

5

10

20

Cib

Cob

COLLECTOR TO BASE VOLTAGE : VCB

(V)

EMITTER TO BASE VOLTAGE

: VEB

(V)

Fig.11 Collector output capacitance vs.

collector-base voltage

Emitter input capacitance vs.

emitter-base voltage

Ta=25˚C

f

=1MHz

IE

=0A

IC

=0A

−0.2

−0.5

−1

−2

−5

−10

10

20

50

100

200

EMITTER CURRENT : IE

(mA)

Fig.12 Base-collector time constant vs.

emitter current

Ta=25

˚C

f=32MHZ

VCB=6V

DTr2

OUTPUT CURRENT : IO

(A)

100

µ 200µ 500µ 1m 2m

5m 10m 20m

50m 100m

100

50

20

10

5

2

1

500m

200m

100m

VO

=0.3V

Ta

=−40°C

25

°C

100

°C

Fig.1 Input voltage vs. output current

(ON characteristics)

INPUT VOLTAGE : VI(off)

(V)

0

3.0

10m

1

µ

2m

5m

1m

200

µ

500

µ

100

µ

20

µ

50

µ

10

µ

2

µ

5

µ

0.5

1.0

1.5

2.0

2.5

VCC

=5V

Ta

=100°C

25

°C

−40°C

Fig.2 Output current vs. input voltage

(OFF characteristics)

OUTPUT CURRENT : IO

(A)

100

µ 200µ 500µ1m 2m 5m 10m 20m 50m100m

1k

500

200

100

50

20

10

5

2

1

VO

=5V

Ta

=100°C

25

°C

−40°C

Fig.3 DC current gain vs. output

current

OUTPUT CURRENT : IO

(A)

100

µ 200µ 500µ 1m 2m

5m 10m 20m

50m 100m

1

500m

200m

100m

50m

20m

10m

5m

2m

1m

lO/lI

=20

Ta

=100°C

25

°C

−40°C

Fig.4 Output voltage vs. output

current

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