Technical Note

2/10

www.rohm.com

2011.06 - Rev.B

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

BD1604MUV, BD1604MVV

●

Electrical Characteristics

Unless otherwise specified, Ta is 25℃ and VBAT is 3.6V.

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

[Circuit current]

Circuit current 0

-

0.1

1

μA

EN=0V

Circuit current 1.0

-

1.0

2.0

mA

x1.0 Mode, Iout = 0mA

Circuit current 1.5

-

2.3

3.3

mA

x1.5 Mode, Iout = 0mA

Circuit current 2.0

-

2.5

3.5

mA

X2.0 Mode, Iout = 0mA

Unless otherwise specified, Ta is 25℃ and VBAT is 3.6V.

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

[Current driver]

LED maximum current

-

-

30

mA

LED current accuracy

-

0.5

5.0

%

LED current matching

-

0.5

3.0

%

LED pin control voltage

0.08

0.10

0.20

V

Minimum voltage

at LED1~LED4 pins

ISET voltage

0.5

0.6

0.7

V

Oscillation frequency

Fosc

0.8

1.0

1.2

MHz

Over current limiter

-

600

900

mA

LED current limiter

40

60

100

mA

*1) LED current matching = (ILEDmax-ILEDmin)/(ILEDmax+ILEDmin)*100

ILEDmax

: Maximum value of LED1-4 current

ILEDmin

: Minimum value of LED1-4 current

Unless otherwise specified, Ta is 25℃ and VBAT is 5.5V.

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

[Control Signal etc.]

Input ’H’ voltage

1.4

-

-

V

EN,SEL0,SEL1,SEL2

Input ’L’ voltage

-

-

0.4

V

EN,SEL0,SEL1,SEL2

Input ‘H’ current1

-

18.3

30

μA

EN=5.5V

Input ‘H’ current2

-

0

1

μA

SEL0,SEL1,SEL2=5.5V

Input ‘L’ current

-1

0

-

μA

EN,SEL0,SEL1,SEL2=0V

Unless otherwise specified, Ta is 25℃ and VBAT is 3.6V.

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

[Control Signal etc.]

UVLO detecting voltage

1.9

2.2

2.5

V