BD93941EFV datasheet(4/31 Pages) ROHM

Part #	BD93941EFV

Description	White LED Driver for large LCD Panels (DCDC Converter type)

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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4 / 31 page

Datasheet

4/27

TSZ02201-0F1F0C100270-1-2

12.Aug.2015 Rev.003

www.rohm.com

TSZ22111・15・001

BD93941EFV BD93941FP

Electrical Characteristics (Unless otherwise noted, Ta = 25

oC, VCC=24V)

Parameter

Symbol

Limit

Unit

Condition

Min.

Typ.

Max.

[DC/DC Protection Block]

Overvoltage protection detection

voltage

VOVP

2.7

3.00

3.3

V

OVP=SWEEP UP

Overvoltage protection detection

hysteresis voltage

VOVP_HYS

50

100

200

mV

OVP=SWEEP DOWN

Short circuit protection detection

voltage

VSCP

0.04

0.10

0.25

V

OVP=SWEEP DOWN

[LED Driver Block]

LED pin current accuracy 1

dILED1

-2

-

2

%

ILED=100mA,

(ADIM=2.5V,ISET=75kΩ)

LED pin current accuracy 2

dILED2

-3.2

-

3.2

%

ILED=70mA,

(ADIM=1.75V,ISET=75kΩ)

LED pin current accuracy 3

dILED3

-4.6

-

4.6

%

ILED=50mA,

(ADIM=1.25V,ISET=75kΩ)

LED pin current accuracy 4

dILED4

-8

-

8

%

ILED=30mA,

(ADIM=0.75V,ISET=75kΩ)

LED pin current accuracy 5

dILED5

-3

-

3

%

ILED=100mA,

(ADIM=7V,ISET=75kΩ)

LED pin Leakage Current

ILLED

-2.5

-

2.5

μA

LED=60V

LED open detection voltage

VOPEN

0.05

0.2

0.285

V

LED=SWEEP DOWN

LED short detection voltage

VSHORT

4

5

6

V

LED=SWEEP UP

ADIM pin Input Current

ILADIM

-2.5

-

2.5

μA

ADIM=3V

[STB Block]

STB pin high-level voltage

STBH

2

-

35

V

STB=SWEEP UP

STB pin low-level voltage

STBL

-0.3

-

0.8

V

STB=SWEEP DOWN

STB pin pull-down resistance

RSTB

500

1000

1500

kΩ

STB=3.0V

[PWM Block]

PWM pin high-level voltage

PWMH

2

-

35

V

PWM=SWEEP UP

PWM pin low-level voltage

PWML

-0.3

-

0.8

V

PWM= SWEEP DOWN

PWM pin pull-down resistance

RPWM

180

300

420

kΩ

PWM=3.0V

[Failure Indication Block (Open Drain)]

AUTO pin source current

IAUTO

-2

-1

-0.5

μA

AUTO=2V

AUTO pin Detection Voltage

VAUTO

3.6

4.0

4.4

V

AUTO=SWEEP UP

Abnormal Detection Timer

tCP

20

ms

RT=75kΩ

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