BD6590MUV
Technical Note
7inch panel
Adapt er
Battery
4.5V to 5.5V
Adapt er
Battery
4.5V to 21.2V
4.5V to 26.6V
4.5V to 5.5V
10µF
10µF
4.7µH
6S × 4P
4.7µH
8S × 3P
2.2µF/50V
2.2µF/50V
1µF
1µF
FAILFLAG SW SW
VBAT VBAT
FAILFLAG SW SW
VBAT VBAT
2. 2MΩ
69.8kΩ
2. 2MΩ
69.8kΩ
10kΩ
10kΩ
PWMDRV
VDET
PWMDRV
VDET
10kΩ
10kΩ
PWM
PWM
PWMPOW
PWMPOW
fPWM=100Hz~1kHz
fPWM=100Hz~1kHz
10kΩ
10kΩ
BD6590MUV
BD6590MUV
RESET
RESET
RSTB
TEST
RSTB
TEST
LED1
LED2
LED3
LED4
LED5
LED6
LED1
LED2
LED3
LED4
LED5
LED6
OCPSET
PGND
OCPSET
PGND
Eac h 16mA
Eac h 16mA
68kΩ
68kΩ
GND GND
ISET
GND GND
ISET
27kΩ
27kΩ
Fig.24
8series×3parallel, LED current 16mA,
Switching frequency 1250kHz setting example
Power control PWM application
Fig.25
6series×4parallel, LED current 16mA,
Switching frequency 1250kHz setting example
Power control PWM application
Adapt er
Battery
4.5V to 26.6V
4.5V to 5.5V
10µF
4.7µH
8S × 3P
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
Eac h 40.2mA
56kΩ
GND GND
ISET
21.5kΩ
Fig.26
8series×3parallel, LED current 40.2mA,
Switching frequency 1250kHz setting example
Power control PWM application
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2011.07 - Rev.B
22/26
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