BD9202EFS 데이터 시트보기 (PDF) - ROHM Semiconductor

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BD9202EFS

White backlight LED drivers

ROHM Semiconductor 

BD9202EFS

●Pin configuration

Technical Note

44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23

BD９２０２EFS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

●Terminal number， terminal name

PIN

No.

Terminal

name

Function

PIN Terminal name

No.

Function

(1)

LED1

LED output terminal1

(23)

LED5

LED output terminal 5

(2)

PGND2

GND2 for LED

(24)

PGND4

GND4 for LED

(3)

LED2

LED output terminal2

(25)

LED6

LED output terminal 6

(4)

CP1

Condenser connected terminal for filter

setting 1

(26)

TOUT1

Output terminal 1 for test monitor 1

(5)

CP2

Condenser connected terminal for filter

setting 2

(27)

BRT

BCT oscillation frequency setting

resistant connected terminal

(6)

FAIL1

Malfunction detection output 1

(28)

RT

CT oscillation frequency setting

resistant connected terminal

(7)

FAIL2

Malfunction detection output 2

(29)

CS

DC/DC output electric current

detection terminal

(8)

AGND

Small signal section GND

(30)

OVP

DC/DC Over-voltage

terminal

detection

(9)

CPUDI

Serial interface DATA input terminal

(31)

SWOUT

DC/DC Switching output terminal

(10)

CPUDO

Serial interface DATA output terminal

(32)

PGND1

GND1 for LED

(11) CPUVDD Serial interface Power supply terminal (33)

LOADSW

Load switch control terminal

(12) CPUCLK Serial interface CLK input terminal

(34)

UVLO

It is the prevention detection terminal

for miss operating at low voltage

(13)

CPUCS

Serial interface CS input terminal

(35)

CT_SYNC_OUT

CT Synchronization signal output

terminal

(14)

VCC

Power supply terminal

(36)

BCT_SYNC_OUT

BCT Synchronization signal output

terminal

(15)

VREG

Series regulator output terminal

(37)

CT_SYNC_IN

CT Synchronization signal input

terminal

(16)

VREF

Reference voltage output terminal

(38)

BCT_SYNC_IN

BCT Synchronization signal input

terminal

(17)

ISET

LED fixed electric current setting resistant

connected terminal

(39)

COMP

Error amplifier output terminal

(18)

VSET

DC modulated light voltage input terminal (40)

TOUT2

Output terminal 2 for test monitor

(19)

TEST

Test mode change terminal

(41)

EN

Enabling terminal

(20)

LED3

Output terminal 3

(42)

LED7

LED output terminal 7

(21)

PGND3

GND3 for LED

(43)

PGND5

GND5 for LED

(22)

LED4

LED output terminal 4

(44)

LED8

LED output terminal 8

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4/19

2009.04 - Rev.A

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