Rohm Semiconductor Electronic Components Datasheet

BD6583MUV-A Datasheet

6-Channel White LED Driver

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Datasheet

6-Channel White LED Driver

for up to 72 LEDs

BD6583MUV-A

General Description

BD6583MUV-A 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. BD6583MUV-A 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.

Key Specifications

 Operating power supply voltage range: 2.7V to 22.0V

 LED Maximum Current:

25mA (Max.)

 Quiescent Current 1:

0.6μA (Typ.)

Quiescent Current 2:

4.6μA (Typ.)

 Operating temperature range:

-30 to +85

Package W(Typ.) x T(Typ.) x H(Max.)

Features

 High efficiency PWM step-up DC/DC converter

(fsw=1MHz), max efficiency 93%

 High accuracy & good matching (±3%) current

drivers 6ch

 Drive up to 12* in series, 6 strings in parallel =72

white LEDs (*white LED Vf=3.5Vmax)

 Rich safety functions

▪ Over-voltage protection (OVP)

▪ Over current limit

▪ External SBD open detect

▪ Thermal shutdown

VQFN024V4040

4.00mm x 4.00mm x 1.00mm

Figure 1. Package

Applications

All middle size LCD equipments backlight of Notebook

PC, portable DVD player, car navigation systems, etc.

Typical Application Circuit

Battery

10μF

4.7μH

2.2μF

RTR020N05

100mΩ

Power

ON/OFF

200Hz

PWM

1μF

SENSP

FAILSEL VDET

SENSN

RSTB BD6583MUV-A

PWMPOW

PWMDRV

VBAT

VREG

LED1

LED2

LED3

LED4

LED5

GNDGNDGNDGNDTEST ISETHISETLLED6

24kΩ

10LED x 6parallel

Each 20mA

Figure 2F. iTgyuprieca2l.ATpyppliiccaaltiAopnpCliciractuioitn Circuit

Product structure Silicon monolithic integrated circuit

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TSZ22111 14 001

This product is not designed protection against radioactive rays

1/32

TSZ02201-0G3G0C400180-1-2

03.Dec.2012 Rev.001

Rohm Semiconductor Electronic Components Datasheet

BD6583MUV-A Datasheet

6-Channel White LED Driver

No Preview Available !

BD6583MUV-A

Datasheet

Absolute Maximum Ratings (Ta=25 )

Parameter

Symbol

Terminal voltage 1

VMAX1

Terminal voltage 2

VMAX2

Ratings

Unit Condition

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

PWMPOW,PWMDRV,FAILSEL,ISETH,ISETL

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

Terminal voltage 3

VMAX3

50.5

VDET

Power dissipation 1

Pd1 500 mW

Power dissipation 2

Pd2 780 mW

Power dissipation 3

Pd3

1510

Operating temperature range Topr

-30 to +85

Storage temperature range

Tstg

-55 to +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 0mm2, When it’s used by more than Ta=25 , it’s reduced by 6.2mW/ .

(*3) 4 layer (JEDEC Compliant board) has been mounted.

Copper foil area 1layer 6.28mm2, Copper foil area 2 to 4layers 5655.04mm2, When it’s used by more than Ta=25 , it’s reduced by 12.1mW/ .

Recommended Operating Rating (Ta=-30 to +85 )

Parameter

Ratings

Symbol

Min. Typ. Max.

Power supply voltage

VBAT 2.7 12.0 22.0

Unit

Condition

Electrical Characteristics (Unless otherwise specified, VBAT=12V, RSTB=2.5V, Ta = +25

Parameter

Limits

Symbol

Unit

Min. Typ. Max.

[FAILSEL,PWMDRV Terminal]

Threshold voltage (Low)

VthL

- 0.2 V

)

Condition

Threshold voltage (High) 1

VthH1 1.4 - 5.0 V VBAT>5.0V

Threshold voltage (High) 2

VthH2 1.4

- VBAT V VBAT<5.0V

Terminal input current

[PWMPOW Terminal]

Iin - 8.3 14.0 µA Input=2.5V

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

PWM pull down resistor

[RSTB Terminal]

Low input voltage range

PWMH2

PWMR

1.4

300

- VBAT V VBAT<5.0V

500 700 kΩ

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

[Regulator]

VREG voltage

IRSTB

89 134 µA RSTB=2.5V, LED1-6=3V

VREG 4.0 5.0 6.0 V No load

Under voltage lock out

UVLO 2.05 2.25 2.65 V

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TSZ22111 15 001

2/32

TSZ02201-0G3G0C400180-1-2

03.Dec.2012 Rev.001

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BD6583MUV-A Datasheet

6-Channel White LED Driver

BD6583MUV-A Datasheet

6-Channel White LED Driver

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