BD9018KV datasheet(3/17 Pages) ROHM

Part #	BD9018KV

Description	Step-down,High-efficiency Switching Regulators (Controller type)

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Manufacturer	ROHM [Rohm]

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Technical Note

3/16

BD9018KV

www.rohm.com

2010.02 - Rev.A

○

c

●

Reference data (Unless otherwise specified, Ta=25℃)

Fig.1 Efficiency 1

Fig.4 Reference voltage vs.

temperature characteristics

Fig.5 Over current detection vs.

temperature characteristics

Fig.6 Frequency vs.

temperature characteristics

0

10

20

30

40

50

60

70

80

90

100

0

123

OUTPUT CURRENT：Io [A]

3.3 V

5.0V

VIN=12V

792

794

796

798

800

802

804

806

808

-40

-15

10

35

60

85

AMBIENT TEMPERATURE ： Ta [℃]

60

70

80

90

10 0

11 0

-40

-15

10

35

60

8 5

AMBIENT TEMPERATURE ： Ta [℃]

8.0

8.5

9.0

9.5

10.0

10.5

11.0

- 40

-15

10

3 5

60

85

AMBIENT TEMPERATURE ： Ta [℃ ]

Fig.7 SS Charge current vs

temperature characteristics

Fig.2 Standby current

792

794

796

798

800

802

804

806

808

-40

- 15

10

3 5

60

8 5

AMBIENT TEMPERATURE ： Ta [℃]

0.0

0.5

1.0

1.5

2.0

2.5

-40

- 15

10

35

60

8 5

AMBIENT TEMPERATURE ： Ta [℃]

Fig.8 UVLO threshold voltage

vs temperature characteristics

Fig.9 EN threshold voltage

vs temperature characteristics

0

1

2

3

4

5

6

7

-40

-15

10

35

60

85

AMBIENT TEMPERATURE ： Ta [℃]

Fig.10 Circuit current vs

temperature characteristics

0

1

2

3

4

5

6

7

8

9

10

0

102 03 0

Input voltage ： Vin [V]

Fig.3 Circuit current

0

1

2

3

4

5

6

7

8

9

10

0

102 03 0

Input voltage ： Vin [V]

8.0

8.5

9.0

9.5

10.0

10.5

11.0

-40

-15

10

35

60

85

AMBIENT TEMPERATURE ： Ta[℃]

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