bd6581gu ROHM Co. Ltd., bd6581gu Datasheet

bd6581gu

Manufacturer Part Number

bd6581gu

Description

White Backlight Led Driver

Manufacturer

ROHM Co. Ltd.

Datasheet

1.BD6581GU.pdf (27 pages)

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

bd6581gu-E2

Manufacturer:

ROHM

Quantity:

21 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

bd6581gu-E2

Manufacturer:

ROHM/罗姆

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LED Drivers for LCD Backlights

White Backlight LED Driver

for Medium to Large LCD Panels

(Switching Regulator Type)

●Description

●Features

●Absolute Maximum Ratings

●Recommended Operating Range (Ta=-30℃ ~ +85℃)

www.rohm.com

BD6581GU

Maximum applied voltage 1

Maximum applied voltage 2

Maximum applied voltage 3

Power dissipation 1

Operating temperature range

Storage temperature range

Power supply voltage

(*1) This value is the measurement value that was mounted on the PCB by ROHM.

BD6581GU is white LED driver IC with PWM step-up DC/DC converter that can boost max 42.5V and current driver that can

drive max 25mA. The wide and precision brightness can be controlled by external PWM pulse.

BD6581GU 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.

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

1) High efficiency PWM step-up DC/DC converter (fsw=1MHz), max efficiency 93%

2) High accuracy & good matching (±1.5%) current drivers 6ch

3) Drive up to 12

4) Wide input voltage range (2.7V ~ 22V)

5) Rich safety functions

6) Small & thin package (VCSP85H2) 2.6×2.6×0.85mm

Temperature deleting: 8.8mW/ ℃ from Ta>25℃

・Over-voltage protection (OVP)

・Over current limit

・External SBD open detect

・Thermal shutdown

Parameter

＊

in series, 6 strings in parallel =72 white LEDs (

VMAX1

Symbol

VMAX2

VMAX3

Symbol

VBAT

Topr

Tstg

Pd1

Min.

2.7

-55 ~ +150

-30 ~ +85

Ratings

Limits

1100

50.5

12.0

Typ.

1/26

Max.

22.0

＊

Unit

℃

white LED Vf=3.5Vmax)

TEST, VREG, SENSP, SENSN, SW, RSTB,

PWMPOW, PWMDRV, FAILSEL, ISETH, ISETL

LED1, LED2, LED3, LED4, LED5, LED6, VBAT

VDET

Condition

2010.03 - Rev.A

No.10040EAT13

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