BD9267KUT ROHM [Rohm], BD9267KUT Datasheet - Page 6

• Manufacturer Part Number: BD9267KUT
• Description: White LED Diver for Backlight of Medium/Large-sized LCDs
• Manufacturer: ROHM [Rohm]

BD9267KUT
●Block Diagram
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
FPGA
CONTROL
(ON timming)
VSYNC
VCC
GND
DGND
HSYNC
DVDD
CLK
(clock)
CS
DO
DI
LED_OP_DET
LED_SH_DET
RES_SH_DET
VSYNC
HSYNC
CLK
CS
DI
STB
REG
SPI I/F
VREF5V
1/4
DUTY
register
PWM
1
0
S
VREF
Protect
logic
PWM1
PWM16
Edge_det
UVLO
SPI
Edge_det
UVLO
MOS_SH_DET
Figure 6-2. Logic Block Diagram
Figure 6-1. Block Diagram
MS16
EAMP_ref
FB16
MS1
LED_ref
FB16
VREF5V
FB1
DTY_LTCH REG(12bit)
DLY_LTCH REG(12bit)
DTY COUNTER(12bit)
DLY COUNTER(12bit)
DAC
DAC
FB8
ERR_MSK_CNT (6bit)
RISE
ERR_MSK_CNT (6bit)
FALL
PWM_MSK_CNT (6bit)
FB1
FB9
LSP
+
+
+
+
-
-
COMP2
OPEN
SHORT
LED
DET
RES
DET
6/28
SHORT
MOS
DET
SHORT
COMP1
LED
DET
pwm_aftr_msk
LTCH
LTCH
LTCH
COMP
COMP
SEL
SEL
DVDD
FB16
FB1
FB2
ERR_DET
S
R
EN
LED16_dr_moni
err_mos_sh
err_led_op
err_led_sh
err_res_sh
LED2_dr_moni
LED1_dr_moni
Q
Q
Q
Q
Q
PWM16
PWM1
PWM2
CHCONT_*
* : 01～16
+
-
+
+
-
-
DEC
MS16
MS1
MS2
SPI
TSZ02201-0F1F0C100050-1-2
DO_EN
PWM_ OUT_*
DO
LED_EN_01～16
LED_REF_01～12
EAMP_DAC_01～12
ERR_OUT_*
03.Aug.2012 Rev.001
G1
S1
G2
S2
G16
S16
D16
D1
D2
CH16
CH1
CH2
Datasheet