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BD6066GU,BU6066EKN
● Application example
Battery
Battery
Technical Note
10 μ F (25V)
4.7 μ H
RB160M-60
2.2 μ F (50V)
C3
10LED
10 μ F (25V)
4.7 μ H
RB160M-60
2.2 μ F (50V)
C3
10LED
SW
SW
RTR020N05
C1
B1 SENSP
VDET
RTR020N05
C1
B1 SENSP
VDET
68m ?
A1 SENSN
68m ?
A1 SENSN
Power
ON/OFF
200Hz
E5 EN1
E3 EN2
E1 PWM
LED1 D5
LED2 C5
LED3 B5
Power
ON/OFF
200Hz
E5 EN1
E3 EN2
E1 PWM
LED1 D5
LED2 C5
LED3 B5
PWM
E4 VBAT
LED4 A5
each 20mA
PWM
E4 VBAT
LED4 A5
each 20mA
E2 VREG
E2 VREG
1 μ F(10V)
GND
GND TEST ISET
1 μ F(10V)
GND
GND TEST ISET
A2
D1
A4
A3
A2
D1
A4
A3
24k ?
Fig.25 LED current 20mA setting example
(10 series × 4parallel)
Battery
24k ?
Fig.26 LED current 20mA setting example
(10 series × 3parallel)
Battery
10 μ F (25V)
4.7 μ H
RB160M-60
2.2 μ F (50V)
C3
10LED
10 μ F (25V)
4.7 μ H
RB160M-60
2.2 μ F (100V)
C3
270k ?
12LED
SW
SW
RTR020N05
C1
B1 SENSP
VDET
C1
B1 SENSP
VDET
68m ?
A1 SENSN
39m ?
A1 SENSN
Power
ON/OFF
200Hz
E5 EN1
E3 EN2
E1 PWM
LED1 D5
LED2 C5
LED3 B5
Power
ON/OFF
200Hz
E5 EN1
E3 EN2
E1 PWM
LED1 D5
LED2 C5
LED3 B5
PWM
3.1 to 5.5V
E4 VBAT
LED4 A5
each 20mA
PWM
E4 VBAT
LED4 A5
Each 20mA
E2 VREG
E2 VREG
1 μ F(10V)
GND
GND TEST ISET
1 μ F(10V)
GND
GND TEST ISET
A2
D1
A4
A3
A2
D1
A4
A3
24k ?
Fig.27 Separated power supply of IC and coil setting example
24k ?
Fig.28 Over voltage 48.1V(typ) by external resistor,
LED current 20mA setting example
(12 series (V F 3.6Vmax) × 4parallel)
● Terminal processing
TEST pin = Connect to GND
N.C. = Nothing specified in particular. Open is recommended.
VREG = When IC is driving from the outside of 3.1~5.5V, short VBAT and VREG, and put the voltage to VREG
EN1, 2 = Connect to GND in case of fixing at L level
LED1, 2 = When each LED driver are not used at EN setting, connect to VREG terminal or the power supply of more
than 1V.
GND = Each GND is connecting inside IC. Connect to GND of all PCB
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? 2011 ROHM Co., Ltd. All rights reserved.
6/15
2011.06 - Rev.B
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