BD6590MUV
Technical Note
Adapt er
Battery
4.5V to 5.5V
Adapt er
Battery
4.5Vto13V
4.5Vto13V
4.5V to 5.5V
10µF
10µF
4.7µH
3S × 6P
4.7µH
3S × 5P
2.2µF/50V
2.2µF/50V
1µF
1µF
FAILFLAG SW SW
VBAT VBAT
FAILFLAG SW SW
VBAT VBAT
2. 2Mꢀ
187kꢀ
2. 2Mꢀ
187kꢀ
10kꢀ
10kꢀ
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 29.6mA
Eac h 16mA
47kꢀ
33kꢀ
GND GND
ISET
GND GND
ISET
14.6kꢀ
27kꢀ
Fig.30
3series×5parallel, LED current 16mA,
Switching frequency 1250kHz setting example
Power control PWM application
Fig.31
3series×6parallel, LED current 29.6mA,
Switching frequency 1250kHz setting example
Power control PWM application
Adapt er
Battery
Adapt er
Battery
4.5Vto30V
4.5Vto13V
4.5V to 5.5V
4.5V to 5.5V
10µF
10µF
4.7µH
10S × 1P
4.7µH
3S × 6P
2.2µF/50V
2.2µF/50V
1µF
1µF
FAILFLAG SW SW
VBAT VBAT
FAILFLAG SW SW
VBAT VBAT
1Mꢀ
2. 2Mꢀ
187kꢀ
10kꢀ
10kꢀ
PWMDRV
VDET
PWMDRV
VDET
10kΩ
10kΩ
26.7kꢀ
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
Each177.6mA
Each177.6mA
68kꢀ
47kꢀ
GND GND
ISET
GND GND
ISET
14.7kꢀ
14.7kꢀ
Fig.32
3series×6parallel, LED current 177.6mA,
Switching frequency 1250kHz setting example
Power control PWM application
Fig.33
10series×1parallel, LED current177.6mA,
Switching frequency 1250kHz setting example
Power control PWM application
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2011.07 - Rev.B
24/26
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