KA278RA05 datasheet(3/8 Pages) FAIRCHILD

Part #	KA278RA05

Description	Low Dropout Voltage Regulator (Fixed & Adjustable)

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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KA278RA05

3

Typical Perfomance Characteristics

Figure 1. Output Voltage vs. Input Voltage

Figure 3. Output Voltage vs. Temperature(Tj)

Figure 5. Dropout Voltage vs. Junction Temperature

Figure 2. Quiescent Current vs. Input Voltage

Figure 4. Quiescent Current vs. Temperature(Tj)

Figure 6. Power Dissipation vs. Temperature(Ta)

510

15

Input voltage Vin (V)

6

5

4

3

2

1

7

0

RL=

RL=2.5

Ω

5.04

5.02

5.00

5.06

-25

TEMPERATURE Tj(oC)

75

125

025

50

100

4.96

4.94

4.92

4.98

125

0.6

0.5

0.4

0.3

0

Junction temperature Tj(oC)

0.2

0.1

75

025

50

100

-25

Io=2A

1.5A

1.0A

0.5A

50

40

30

20

10

0

15

Input voltage Vin (V)

5

10

RL=

10

8

6

4

2

0

Junction temperature Tj(oC )

75

125

025

50

100

-25

TEMPERATURE Tj(oC)

75

125

025

50

100

15

10

5

20

0

a

*Fixed Mode (VO=5V)

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