BD6590MUV
Technical Note
5inch panel
Adapter
Battery
Adapter
Battery
4.5V to 26.6V
4.5V to 5.5V
4.5V to 26.6V
4.5V to 5.5V
10µF
4.7µH
8S × 2P
10µF
4.7µH
8S × 2P
2.2µF/50V
1µF
2.2µF/50V
1µF
FAILFLAG SW SW
VBAT VBAT
2.2MΩ
FAILFLAG SW SW
VBAT VBAT
2.2MΩ
69.8kΩ
10kΩ
10kΩ
PWMDRV
VDET
PWMDRV
VDET
10kΩ
69.8kΩ
10kΩ
PWM
PWMPOW
PWM
PWMPOW
fPWM=100Hz~1kHz
10kΩ
fPWM=100Hz~1kHz
10kΩ
BD6590MUV
RESET
RSTB
TEST
BD6590MUV
RESET
RSTB
TEST
LED1
LED2
LED3
LED4
LED5
LED6
LED1
LED2
LED3
LED4
LED5
LED6
OCPSET
PGND
OCPSET
PGND
Each 40.2mA
68kΩ
Each 16mA
GND GND
ISET
33kΩ
GND GND
ISET
21.5kΩ
27kΩ
Fig.27
8series×2parallel, LED current16mA,
Switching frequency1250kHz setting example
Power control PWM application
Fig.28
8series×2parallel, LED current 40.2mA,
Switching frequency 1250kHz setting example
Power control PWM application
Adapter
Battery
4.5V to 26.6V
4.5V to 5.5V
10µF
4.7µH
8S × 2P
2.2µF/50V
1µF
FAILFLAG SW SW
VBAT VBAT
2.2MΩ
69.8kΩ
10kΩ
PWMDRV
VDET
10kΩ
PWM
PWMPOW
fPWM=100Hz~1kHz
10kΩ
BD6590MUV
RESET
RSTB
TEST
LED1
LED2
LED3
LED4
LED5
LED6
OCPSET
PGND
Each 88.8mA
68kΩ
GND GND
ISET
27kΩ
Fig.29
8series×2parallel, LED current 88.8mA,
Switching frequency 1250kHz setting example
Power control PWM application
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
2011.07 - Rev.B
23/26
ROHM [ ROHM ]
