Technical Note

2/11

BD1754HFN

www.rohm.com

2011.06 - Rev.B

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

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Electrical Characteristics

(Unless otherwise specified, Ta = 25 ℃ and Vin = 3.6 V)

Parameter

Symbol

Limits

Unit

Condition

Min

Typ

Max

Quiescent current

Iq

-

0.1

1

μA

EN=0V

Circuit current

IDD

-

1.2

2.0

mA

Except LED current

[Current driver]

Maximum current

ILED-max

29.76

32.0

34.24

mA

LED Current accuracy

ILED-diff

-

-

7.0

%

When current 16.5 mA setting

LED Current matching

ILED-match

-

0.5

3.0

%

When current 16.5 mA setting

[Logic controller]

Low threshold voltage

VIL

-

-

0.4

V

High threshold voltage

VIH

1.4

-

-

V

‘H’ level input current

IIH

-

0

2

μA

EN=Vin

‘L’ level input current

IIL

-2

0

-

μA

EN=0V

EN ‘H’ time

THI

0.05

-

100

μsec

EN ‘L’ time

TLO

0.3

-

100

μsec

EN Off time-out

TOFF

1

-

-

msec

VIN supply -> EN active time

TVINON

1

-

-

msec

EN stand-by -> VBAT Off time

TVINOFF

0

-

-

msec

(*1)

The following formula is used for calculation:

Imax = Current value in a channel with the maximum current value among all channels

Imin = Current value in a channel with the minimum current value among all channels