Technical Note

5/11

www.rohm.com

2011.03 - Rev.C

© 2011 ROHM Co., Ltd. All rights reserved.

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0

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40

SUPPLY VOLTAGE ： Vcc [V]

[BA50DD0WT]

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2

4

6

8

130

140

150

160

170

180

190

AMBIENT TEMPERATURE ： Ta [℃]

[BA50DD0WT]

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8

02468 10 12 14 16 18 20 22 24

[BA50DD0WT]

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4 4.8

OUTPUT CURRENT ： IOUT [A]

[BA50DD0WT]

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100

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700

800

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

OUTPUT CURRENT ： IOUT [A]

[BA50DD0WT]

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50

60

10

100

1000

10000 100000 1000000

FREQUENCY ： f [Hz]

[BA50DD0WT]

4.8

4.9

5.0

5.1

5.2

-40 -20

0

20

40

60

80

100

AMBIENTTEMPERATURE [℃]

[BA50DD0WT]

0

20

40

60

80

100

120

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160

180

200

0.0

0.5

1.0

1.5

2.0

[BA50DD0WT]

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600

700

800

0246 8 10 12 14 16 18 20 22 24

CONTROL VOLYAGE:Vctl（V)

[BA50DD0WT]

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3

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6

02468 10 12 14 16 18 20 22 24

SUPPLY VOLTAGE ： Vcc [V]

[BA50DD0WT]

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

02468 10 12 14 16 18 20 22 24

SUPPLY VOLTAGE ： Vcc [V]

[BA50DD0WT]

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

02468 10 12 14 16 18 20 22 24

SUPPLY VOLTAGE ： Vcc [V]

[BA50DD0WT]

●

BA□□DD0□□(BA50DD0WT)

Fig.22 CTL Voltage vs. Output Voltage

Fig.24 Thermal Shutdown

Circuit Characteristics

Fig.20 Circuit Current by Load Level

Fig.21 CTL Voltage vs. CTL Current

Fig.19 Temperature Characteristics

Fig.23 Overvoltage Operating

Fig.15 Input Stability (Io=2A)

Fig.13 Circuit Current

Fig.14 Input Stability

Fig.17 Input/Output Voltage Difference

Fig.16 Load Stability

Fig.18 Ripple Rejection Characteristics