BD6583MUV-A Ver la hoja de datos (PDF) - ROHM Semiconductor

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BD6583MUV-A

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

ROHM Semiconductor 

BD6583MUV-A

Technical Note

●Electrical characteristic

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

Parameter

Symbol

Min.

Limits

Typ.

Max.

Unit

[FAILSEL,PWMDRV Terminal]

Condition

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

2/26

2011.06 - Rev.C

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