BD6590MUV
Technical Note
●Application example
・LED current setting controlled ISETH resistor.
21.5kꢀ : 20.1mA
27.0kꢀ : 16.0mA
14.7kꢀ : 29.59mA
・Brightness control
Please input PWM pulse from PWMPOW or PWMDRV terminal.
Please refer to function
15inch panel
Adapt er
Battery
4.5Vto30V
4.5V to 5.5V
10µF
4.7µH
10S × 6P
2.2µF/50V
1µF
FAILFLAG SW SW
VBAT VBAT
1Mꢀ
10kꢀ
PWMDRV
VDET
10kΩ
26.7kꢀ
PWM
PWMPOW
fPWM=100Hz~1kHz
10kΩ
BD6590MUV
RESET
RSTB
TEST
LED1
LED2
LED3
LED4
LED5
LED6
OCPSET
PGND
Eac h 16mA
68kꢀ
GND GND
ISET
27kꢀ
Fig.19
10series ×6Parallel, LED current 16mA,
Switching frequency 1250kHz setting example
Power control PWM application
Adapt er
Battery
4.5Vto30V
4.5V to 5.5V
10µF
4.7µH
10S × 6P
2.2µF/50V
1µF
FAILFLAG SW SW
VBAT VBAT
fPWM=100Hz~25kHz
1Mꢀ
10kΩ
10kꢀ
PWM
PWMDRV
VDET
10kΩ
26.7kꢀ
RESET
PWMPOW
BD6590MUV
RSTB
TEST
LED1
LED2
LED3
LED4
LED5
LED6
OCPSET
PGND
Eac h 16mA
68kꢀ
GND GND
ISET
27kꢀ
Fig.20
10series×6parallel, LED current16mA,
Switching frequency 1250kHz setting example
Current driver PWM application
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2011.07 - Rev.B
20/26
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