BD8112EFV-M datasheet(4/23 Pages) ROHM

Part #	BD8112EFV-M

Description	White Backlight LED Drivers for Medium to Large LCD Panels (Switching Regulator Type)

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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4 / 23 page

Technical Note

4/22

www.rohm.com

2011.08 - Rev.C

BD8112EFV-M

●

Electrical characteristic curves (Reference data)

(Unless otherwise specified, Ta=25℃)

45

47

49

51

53

55

-40

-15

10

35

60

85

TEMPERATURE:Ta [℃]

25

40

55

70

85

100

50

100

150

200

250

Total_Io [mA]

VCC=30V

4.5

4.7

4.9

5.1

5.3

5.5

-40

-15

10

35

60

85

TEMPERATURE:Ta [℃]

Fig.3 OSC 温度特性

200

240

280

320

360

400

-40

-15

10

35

60

85

TEMPERATURE:Ta [℃]

200

240

280

320

360

400

-40

-15

10

35

60

85

TEMPERATURE:Ta [℃]

Vcc= 12V

0

10

20

30

40

50

0

0.5

1

1.5

2

VDAC VOLTAGE:VDAC[V]

0

1

2

3

4

5

0

0.02

0.04

0.06

0.08

0.1

VDAC VOLTAGE:VDAC[V]

25

40

55

70

85

100

50

100

150

200

250

OUTPUT CURRENT [mA]

VCC=12V

0.0

2.0

4.0

6.0

0

6

12

18

24

30

36

SUPPLY VOLTAGE:Vcc [V]

Vcc=12V

0.54

0.56

0.58

0.60

0.62

0.64

0.66

-40

-15

10

35

60

85

TEMPERATURE:Ta [℃]

VCC=12V

0

2

4

6

8

10

012345

EN VOLTAGE:VEN [V]

0

2

4

6

8

10

01

23

45

PWM VOLTAGE:VEN [V]

Fig.1 VREG temperature

characteristic

Fig.2 OSC temperature

characteristic

Fig.3 ILED depend on VLED

Fig.4 ILED temperature

characteristic

Fig.5 VDAC Gain①

Fig.6 VDAC Gain②

Fig.7 Efficiency

(LED2 Parallel 5 step)

Fig.8 Efficiency

(LED2 Parallel 7 step)

Fig.9 Circuit Current

(Switching OFF)

Fig.10 Overcurrent detecting voltage

temperature characteristic

Fig.11 EN threshold voltage

Fig.12 PWM threshold voltage

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