bd6581gu ROHM Co. Ltd., bd6581gu Datasheet - Page 20

• Manufacturer Part Number: bd6581gu
• Description: White Backlight Led Driver
• Manufacturer: ROHM Co. Ltd.

●Application Example
BD6581GU
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RTR020N05
RTR020N05
100Hz~10kHz
100Hz~1kHz
Fig.44 10 series×6 parallel, LED current 20mA setting
47mΩ
PWM
51mΩ
PWM
Fig.45 8 series×6 parallel, LED current 20mA setting
15inch panel
13~14inch panel


10μF
10μF
ON/OFF
ON/OFF
Power
Power
Battery
Battery
24kΩ : 20mA
30kΩ : 16mA
19.6kΩ : 24.5mA
33kΩ : 14.5mA
Please input PWM pulse from PWMPOW or PWMDRV terminal.
Please refer electrical characteristic p.3 and function (p.12).
LED current setting controlled ISETH resistor.
Brightness control
1μF
1μF
4.7μH
4.7μH
2.2μF *
2.2μF *
Current driver PWM application
Power control PWM application
GND
GND
SENSP
SENSN
SENSP
SENSN
PWMPOW
PWMDRV
PWMPOW
PWMDRV
SW
RSTB
VREG
SW
RSTB
VREG
VBAT
VBAT
GND
GND
GND
GND
GND
GND
TEST
TEST
FAILSEL
FAILSEL
ISETH
ISETH
24kΩ
24kΩ
ISETL
ISETL
LED1
LED2
LED3
LED4
LED5
LED6
LED1
LED2
LED3
LED4
LED5
LED6
VDET
VDET
Can be set up to each 10 ~25mA
Can be set up to each 10~25mA
Each 20mA
Each 20mA
10LED x 6 parallel
8LED x 6 parallel
20/26
RTR020N05
100Hz~10kHz
51mΩ
PWM
Fig.46 8 series×6 parallel, LED current 20mA setting
10μF
ON/OFF
Power
Battery
(Unit : mm)
1μF
4.7μH
2.2μF *
Current driver PWM application
GND
SENSP
SENSN
RSTB
PWMPOW
PWMDRV
SW
VREG
VBAT
GND
GND
GND
TEST
FAILSEL
ISETH
24kΩ
ISETL
LED1
LED2
LED3
LED4
LED5
LED6
VDET
Can be set up to each 10~25mA
2010.03 - Rev.A
Technical Note
Each 20mA
8LED x 6 parallel