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www.rohm.com

2011.06 - Rev.B

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

LED Drivers for LCD Backlights

White Backlight LED Driver

for Medium to Large LCD Panels

(Switching Regulator Type)

BD6150MUV

●

Description

BD6150MUV is white LED driver IC with PWM step-up DC/DC converter that can boost max 40V and current driver that can

drive max 30mA. The wide and precision brightness can be controlled by external PWM pulse. BD6150MUV has very

accurate current drivers, and it has few current errors between each strings. So, it will be helpful to reduce brightness spots

on the LCD. Small package type is suited for saving space.

●

Features

1) High efficiency PWM step-up DC/DC converter (fsw=1.25MHz / 0.75MHz)

2) High accuracy & good matching current drivers (MAX30mA/ch)

3) Integrated 50V power Nch MOSFET

4) Soft start

5) Drive up to 10 in series 6strings in parallel

6) Wide input voltage range (4.2V ~ 26V)

7) Rich safety functions

・

Over-voltage protection

・

Over current limit

・

LED terminal open/short protect

・

External SBD open detect / Output short protection

・

UVLO

・

Thermal shutdown

8) Small & thin package (VQFN024V4040) 4.0 × 4.0 × 1.0mm

●

Applications

All middle size LCD equipments backlight of Notebook PC, portable DVD player, car navigation systems, etc.

●

Absolute maximum ratings (Ta=25℃)

Parameter

Symbol

Ratings

Unit

Condition

Maximum applied voltage 1

VMAX1

7

V

VREG, ISET, PWMDRV, FSEL,

OCPSET, VDET, TEST

Maximum applied voltage 2

VMAX2

25

V

LED1, LED2, LED3,

LED4, LED5, LED6

Maximum applied voltage 3

VMAX3

30.5

V

VBAT, FAILFLAG, PWMPOW

Maximum applied voltage 4

VMAX4

41

V

SW

Power dissipation 1

Pd1

500

*1

mW

Power dissipation 2

Pd2

780

*2

mW

Power dissipation 3

Pd3

1510

*3

mW

Operating temperature range

Topr

-40 ~ +85

℃

Storage temperature range

Tstg

-55 ~ +150

℃

*1

Reduced 4.0mW/℃ With Ta>25℃ when not mounted on a heat radiation Board.

*2

1 layer (ROHM Standard board) has been mounted. Copper foil area 0mm

*3

4 layer (JEDEC Compliant board) has been mounted. Copper foil area 1layer 6.28mm

When it’s used by more than Ta=25℃, it’s reduced by 12.1mW/℃.

No.11040EBT06