Datasheet > BD9470AEFV

BD9470AEFV

更新时间： 2022-02-26 12:59:49

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
39页	1798K
描述
White LED driver for medium sized and large sized LCD back light

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数据手册

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BD9470AEFV 数据手册

BD9470AFM・BD9470AEFV

●Electrical Characteristics (unless otherwise specified, Ta = 25°C, VCC=24V)

Specification

Parameter

Symbol

unit

Condition

Min

Typ

Max

【LED Driver Block】

LEDｘ pin current accuracy1

LEDｘ pin current accuracy2

LEDｘ pin leakage current

ISET pin voltage

⊿ILED1

⊿ILED2

⊿ILED3

ILLED

-2

ILED=130mA

-2.5

-3.5

-0.8

1.3

2.5

3.5

0.8

1.7

ILED=150mA

ILED=250mA

STB=H,

LEDx=40V

PWMx=L,

LEDｘ pin current accuracy1

【LED protection Block】

ISET short circuit protection range

LEDｘSHORT protection voltage

VISET

1.5

RISET=30kΩ

ISET_DET

VLSP

-0.3

8.5

VISET×90%

9.5

ISET=SWEEP DOWN

LEDx=SWEEPUP,

LSP=OPEN

LSP pin resistive divider(Higher

RULSP

RDLSP

VOPEN

1860

540

3100

900

0.20

5580

kΩ

LSP=0V

1620

LSP=4V

LSP pin resistive divider(Lower R)

LEDｘ OPEN detect voltage

【REG58 BLock】

0.15

0.25

LEDx=SWEEP DOWN

REG58 output voltage 1

REG58 output voltage 2

REG58 max output current

REG58_UVLOdetect voltage

REG58_UVLO Hysteresis

REG58 Discharge current

【STB Block】

REG58_1

REG58_2

5.742

5.713

5.8

－

5.858

5.887

IO=0mA

IO=-15mA

| IREG58 |

STB=ON

REG58=SWEEP DOWN

STB=ON->OFF

REG58_TH

REG58_HYS

REG58_DIS

2.1

2.4

200

5.0

2.7

100

3.0

400

7.0

REG58=SWEEP DOWN

STB=ON->OFF REG58=4V

STB pin HIGH voltage

STBH

STBL

RSTB

0.8

STB=SWEEP UP

STB=SWEEP DOWN

VSTB=3.0V

STB pin LOW voltage

-0.3

600

STB pin Pull Down resistance

【PWM Block】

1000

1800

kΩ

PWMｘ pin HIGH voltage

PWMｘ pin LOW voltage

PWMｘ pin Pull Down resistance

【FAIL Block（OPEN DRAIN）】

FAIL Pin Ron

PWM_H

PWM_L

RPWM

1.5

-0.3

0.8

PWMｘ=SWEEP UP

PWMｘ=SWEEP DOWN

PWMｘ=3.0V

1200

2000

3600

kΩ

RFAIL

ILFAIL

250

-2

500

1000

VFAIL=1.0V

VFAIL=5V

FAIL Pin Leakage current

μA

www.rohm.com

TSZ22111・15・001

TSZ02201-0F10C1002000-1-2

19.Oct.2013 Rev.003

5/35

1 2 3 456 7 8...39

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