Technical Note

10/16

www.rohm.com

2011.04 - Rev.A

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

BD8372HFP-M,BD8372EFJ-M

IOUT Output current　VS ISET connect resistance

0.0010

0.0100

0.1000

1.0000

1.00E+03

1.00E+04

1.00E+05

1.00E+06

RISET[Ω]

H mo de

L mo de

R_ISET setting range

short protection

open protection

●

Method of setting current

ISETL/ISETH generates a standard Voltage respectively in IC (0.8V typ). A standard current is generated by connecting

resistance with ISET terminal, and the current is converted internally and it outputs.

VIN

STOP

IOUT

PBUS

+B

LED

OPEN

Current

Control

H/L mode switch

0.8V(typ)

GND

Iref_l

Iref_l

ISETL

ISETH

0.8V(typ)

・

L mode(STOP=Low)

・

H mode(STOP=High)

[mA]

5

250

40k

0.8V

I

.6k

1

R

exp

250[A]

*

R

V

8

.

0

I

IOUT

ISETL

ISETL

IOUT









Ω

Ω

＝

）　

[mA]

50

2500

40k

V

8

.

0

I

40k

R

exp

[A]

2500

R

V

8

.

0

I

IOUT

ISETH

ISETH

IOUT













Ω

　

Ω

）