BD9267KUT データシートの表示（PDF） - ROHM Semiconductor

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BD9267KUT

White LED Diver for Backlight of Medium/Large-sized LCDs

ROHM Semiconductor 

BD9267KUT

Datasheet

●Block Diagram

VCC

GND

FPGA

DVDD

DI

CLK

CS

DO

DGND

VREF5V

VREF5V

DVDD

STB

LSP

ERR_DET

REG

VREF

UVLO

FB1

FB16

UVLO

MS1

MS16

Protect

SPI I/F logic

LED

OPEN

DET

LED

SHORT

DET

RES

SHORT

DET

MOS

SHORT

DET

PWM1

+

-

MS1

PWM2

+

-

MS2

PWM16

+

-

LED_ref

DAC

MS16

register

EAMP_ref

DAC

FB1

LED1_dr_moni

VSYNC

(ON timming)

HSYNC

(clock)

CONTROL

PWM

DUTY

PWM1

PWM16

FB1 +

FB8 +

-

FB9 +

FB16 +

-

FB2

FB16

COMP2 COMP1

Figure 6-1. Block Diagram

LED2_dr_moni

LED16_dr_moni

D1

G1

CH1

S1

D2

G2

CH2

S2

D16

G16

CH16

S16

CS

DI

SPI

CLK

HSYNC

1/4

LTCH

LTCH

LTCH

SPI

DEC

DO_EN

DO

LED_EN_01～16

LED_REF_01～12

EAMP_DAC_01～12

DLY_LTCH REG(12bit)

DLY COUNTER(12bit)

COMP

CHCONT_*

SQ

R

EN

PWM_ OUT_*

VSYNC

LED_OP_DET

LED_SH_DET

RES_SH_DET

DTY_LTCH REG(12bit)

COMP

S

DTY COUNTER(12bit)

1

0

Edge_det

MOS_SH_DET

ERR_MSK_CNT (6bit)

SEL

RISE

ERR_MSK_CNT (6bit)

SEL

FALL

err_led_op

Q

err_led_sh

Q

err_res_sh

Q

err_mos_sh

Q

Edge_det

PWM_MSK_CNT (6bit)

pwm_aftr_msk

ERR_OUT_*

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© 2012 ROHM Co., Ltd. All rights reserved.

TSZ22111・15・001

Figure 6-2. Logic Block Diagram

* : 01～16

6/28

TSZ02201-0F1F0C100050-1-2

03.Aug.2012 Rev.001

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