BD9486F Ver la hoja de datos (PDF) - ROHM Semiconductor

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BD9486F

1ch Boost up type White LED Driver for large LCD

ROHM Semiconductor 

BD9486F

Datasheet

●1.8 Electrical Characteristics (Unless otherwise specified, Ta=25°C，VCC=12V)

Parameter

Symbol

Limit

Unit

Min. Typ. Max.

【LED Protection Block】

LED OCP Detect Voltage

VLEDOCP 2.88 3.0 3.12

V

Over Boost Detection Voltage

VFBH

3.84 4.00 4.16

V

【Dimming Block】

ADIM Pin Leak Current

ILADIM

-2

0

2

μA

ISENSE Pin Leak Current

IL_ISENSE

-2

0

2

μA

DIMOUT Source ON

Resistance

RONSO

5.0

10

20

Ω

DIMOUT Sink ON Resistance

RONSI

4.0

8.0

16

Ω

【REG50 Block】

REG50 Output Voltage 1

REG50_1 4.95 5.00 5.05

V

REG50 Output Voltage 2

REG50_2 4.925 5.00 5.075 V

REG50 Available Current

| IREG50 |

5

-

-

mA

REG50_UVLO Detect Voltage REG50_TH 2.0

2.3

2.6

V

REG50 Discharge Current

REG50_DIS 3.0

5.0

7.0

μA

【STB Block】

STB Pin HIGH Voltage

STB Pin LOW Voltage

STB Pull Down Resistance

【PWM Block】

PWM Pin HIGH Voltage

PWM Pin LOW Voltage

PWM Pin Pull Down Resistance

【FAIL Block 】

STBH

STBL

RSTB

PWM_H

PWM_L

RPWM

2.0

-

18

V

-0.3

-

0.8

V

600 1000 1400 kΩ

1.5

-

18

V

-0.3

-

0.8

V

600 1000 1400 kΩ

CP Detect Voltage

CP Charge Current

VCP

ICP

2.85 3.0 3.15

V

2.7

3.0

3.3

μA

Condition

VISENSE=SWEEP UP

VFB=SWEEP UP

VADIM=2.0V

VISENSE=4.0V

IO=0mA

IO=-5mA

VREG50=SWEEP DOWN

VSTB=0V

STB=ON->OFF, REG50=4.0V,

PWM=L

VSTB=3.0V

VPWM=3.0V

VCP=SWEEP UP

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TSZ22111・15・001

4/34

TSZ02201-0F1F0C100240-1-2

13.Feb.2014 Rev.004

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