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BD83732HFP-M / BD83733HFP-M

TSZ02201-0G1G0C700310-1-2

© 2014 ROHM Co., Ltd. All rights reserved.

2016.Aug.25 Rev.003

www.rohm.com

TSZ22111・15・001

[A]

R

V

R

)

V

(V

I

VIN_F

IN_F_REF

VIN_F

IN_F

IN

OUT







Functional Description

=0.47Ω. Numbers are "Typical" values.)

1.

Output Current Setting

where:

Figure 13. Output Current Setting

2.

Table of Operations

The PWM dimming mode switches to linear control depending on CRT terminal voltage.

Ω

Ω ).

When an LED open/short-circuit fault is detected, which depends on IOUT terminal voltage, the output current is turned

OFF.

Output current is also turned OFF when PBUS terminal is pulled LOW.

Operation Mode

CRT Terminal

IOUT Terminal

Voltage

Output Current

PBUS

Terminal

Linear Control

-

50mA～500mA

Hi-Z

PWM dimming

See Features

Functional Description,

3. PWM Dimming

Operation

-

See Features

Functional Description,

3. PWM Dimming

Operation

Hi-Z

LED Current

De-rating

-

-

See Features Description,

8. LED Current De-rating

Function

PBUS<2.5V

LED Open

-

≥

VIN - .050V(Typ)

1μA(Max)

Low Output

LED Short

-

≤ 0.6V(Typ)

40

μA(Max)

Low Output

PBUS Control OFF

-

-

1μA(Max)

Low Input

+B

PWM_in

VREF

IOUT

VIN

VIN-0.180V

(Typ)

GND

VIN_F