BD9470AFM・BD9470AEFV

1. Specification for BD9470AEFV・BD9470AFM

●Absolute Maximum Ratings (Ta

=25°C)

Parameter

Symbol

Rating

unit

OVP Detect Voltage (DCDC Stop)

VCC

-0.3~36

V

LED1~6 pin voltage

LED1~6

-0.3~40

V

STB・FAIL・UVLO・OVP pin voltage

STB,FAIL,UVLO,OVP

-0.3~36

V

ISET・FB・SS・

CS・N・REG58・RT pin voltage

ISET・FB・SS・CS・N・REG58・RT

-0.3~7

V

PWM1~6・LSP

PWM1~6・LSP

-0.3~16

Power dissipation (HSOP-M28)*1

Pd

5208

mW

Power dissipation (HTSSOP-B28)*2

Pd

4700

mW

Operating temperature range

Topr

-40～+85

℃

Storage temperature range

Tstg

-55～+150

℃

Maximum junction temperature

Tjmax

+150

℃

●Recommended Operating Ratings

Parameter

Symbol

Rating

unit

Supply voltage

VCC

9.0 ～ 35.0

V

LED1-4 pin minimum output current

ILED_MIN

40

mA*1

LED1-4 pin maximum output current

ILED_MAX

250

mA*1*2*3

LSP input voltage range

VLSP

0.3～2.5

V

DC/DC oscillation frequency

fsw

100 ～ 500

kHz

Min. on-duty for PWM light modulation

PWM_MIN

30

μS

*1

The amount of current per channel

*2

If LED makes significant variations in its reference voltage Vf, the driver will increase power dissipation, resulting in a rise in package

temperature. To avoid this problem, design the board with thorough consideration given to heat radiation measures.

*3

The LED current can be set up to 250mA

● Pin Configuration ( TOP VIEW )

●Outline Dimension Diagrams/Sign Diagrams

LOT No.

BD9470AFM

BD9470AEFV

LOT No.

Figure 4. Pin Configuration（TOP VIEW）

Figure 5. Outline Dimension Diagrams/Sign Diagrams

GND

LED6

PWM4

PWM6

ISET

PWM1

PWM2

PWM3

PWM5

FAIL

OVP

LED5

LED4

LED_GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

STB

VCC

REG58

FB

SS

RT

DCDC_GND

N

CS

LSP

LED3

LED2

LED1

UVLO

7.SS

1.REG58

2.CS

3.N

4.DCDC_GND

5.RT

6.FB

8.ISET

9.PWM1

10.PWM2

11.PWM3

12.PWM4

13.PWM5

14.PWM6

15.GND

16.FAIL

18.LED6

17.OVP

19.LED5

21.LED_GND

20.LED4

22.LED3

24.LED1

23.LED2

25.UVLO

27.STB

26.LSP

28.VCC

2/35

TSZ02201-0F10C1002000-1-2

© 2013 ROHM Co., Ltd. All rights reserved.

19.Oct.2013 Rev.003

www.rohm.com

TSZ22111・15・001