bd6581gu ROHM Co. Ltd., bd6581gu Datasheet - Page 24

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

BD6581GU
© 2010 ROHM Co., Ltd. All rights reserved.
2.7~22V
www.rohm.com
supply
power
RTR020N05
IC
51mΩ
Coil power supply
For the application of 22V and more
The separation of less than an IC power supply 5V and the coil power supply


10μF
200Hz
2.7~5.5V
PWM
ON/OFF
supply
power
RTR020N05
Power
IC
6~30V
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
51mΩ
1μF
Coil power supply
10μF
1μF
200Hz
PWM
ON/OFF
4.7μH
Power
6~30V
Battery
1μF
2.2μF *
1μF
GND
4.7μH
SENSP
SENSN
PWMPOW
PWMDRV
SW
RSTB
VREG
VBAT
GND
2.2μF *
GND
SENSP
SENSN
RSTB
PWMPOW
PWMDRV
SW
VREG
GND
VBAT
GND
GND
GND
TEST
Fig.58
Fig.60
GND
FAILSEL
ISETH
TEST
24kΩ
ISETL
FAILSEL
ISETH
24kΩ
LED1
LED2
LED3
LED4
LED5
LED6
VDET
ISETL
Can be set up to each 10~25mA
LED1
LED2
LED3
LED4
LED5
LED6
VDET
Can be set up to each 10~25mA
Each 20mA
8LED x 6 parallel
Each 20mA
10LED x 6 parallel
24/26
For big current LED
RTR020N05
100Hz~10kHz
82mΩ
PWM
10μF
ON/OFF
Power
Battery
1μF
4.7μH
2.2μF *
GND
SENSP
SENSN
RSTB
PWMPOW
PWMDRV
SW
VREG
VBAT
GND
GND
GND
TEST
Fig.59
FAILSEL
ISETH
24kΩ
ISETL
LED1
LED2
LED3
LED4
LED5
LED6
VDET
Can be set up to 60~150mA
2010.03 - Rev.A
Technical Note
120mA
8LED x 1 parallel