BD6583MUV-A_11 datasheet(2/27 Pages) ROHM

Part #	BD6583MUV-A

Description	White Backlight LED Driver 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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Technical Note

2/26

www.rohm.com

2011.06 - Rev.C

BD6583MUV-A

●

Electrical characteristic

(Unless otherwise specified, VBAT=12V, RSTB=2.5V, Ta = +25 ℃)

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

[FAILSEL,PWMDRV Terminal]

EN threshold voltage (Low)

VthL

0

-

0.2

V

EN threshold voltage (High) 1

VthH1

1.4

-

5.0

V

VBAT>5.0V

EN threshold voltage (High) 2

VthH2

1.4

-

VBAT

V

VBAT<5.0V

EN terminal input current

Iin

-

8.3

14.0

µA Input=2.5V

[PWMPOW Terminal]

Low input voltage range

PWML

0

-

0.2

V

High input voltage range1

PWMH1

1.4

-

5.0

V

VBAT>5.0V

High input voltage range2

PWMH2

1.4

-

VBAT

V

VBAT<5.0V

PWM pull down resistor

PWMR

300

500

700

kΩ

[RSTB Terminal]

Low input voltage range

RSTBL

0

-

0.2

V

High input voltage range1

RSTBH1

2.25

2.5

5.0

V

VBAT>5.0V

High input voltage range2

RSTBH2

2.25

2.5

VBAT

V

VBAT<5.0V

Current consumption

IRSTB

-

89

134

µA RSTB=2.5V, LED1-6=3V

[Regulator]

VREG voltage

VREG

4.0

5.0

6.0

V

No load

Under voltage lock out

UVLO

2.05

2.25

2.65

V

[Switching Regulator]

Quiescent current 1

Iq1

-

0.6

3.4

µA RSTB=0V, VBAT=12V

Quiescent current 2

Iq2

-

4.6

10

µA RSTB=0V, VBAT=22V

Current consumption

Idd

-

3.4

5.1

mA VDET=0V,ISETH=24kΩ

LED control voltage

VLED

0.4

0.5

0.6

V

Over current limit voltage

Ocp

70

100

130

mV *1

SBD open protect

Sop

-

0.1

V

Detect voltage of VDET pin

Switching frequency

fSW

0.8

1.0

1.2

MHz

Duty cycle limit

Duty

92.5

95.0

99.0

%

LED1-6=0.3V

Over voltage limit

Ovl

43.0

44.7

46.4

V

LED1-6=0.3V

[Current driver]

LED maximum current

ILMAX

-

25

mA

LED current accuracy

ILACCU

-

±5

%

ILED=16mA

LED current matching

ILMAT

-

±3

%

▪Each LED current/Average (LED1- 6)

▪ILED=16mA

ISET voltage

Iset

0.5

0.6

0.7

V

LED current limiter

ILOCP

35

60

90

mA

Current limit value at ISET resistor 4.7kΩ setting

LED1, 2, 3, 4, 5, 6=0.5V

LED terminal Over voltage protect

LEDOVP

10.0

11.5

13.0

V

RSTB=PWMDRV=2.5V

(*1) This parameter is tested with DC measurement.

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