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BD6581GU
● Application Example
Battery
Battery
Datasheet
10 μ F
4.7 μ H
10LED x 6parallel
10 μ F
4.7 μ H
10LED x 4aprallel
2.2 μ F *
2.2 μ F *
RTR020N05
SW
SENSP
FAILSEL
VDET
RTR020N05
SW
SENSP
FAILSEL
VDET
100m ?
SENSN
150m ?
SENSN
Power
ON/OFF
RSTB
Power
ON/OFF
RSTB
PWMPOW
LED1
PWMPOW
LED1
200Hz
PWMDRV
LED2
200Hz
PWMDRV
LED2
PWM
VBAT
LED3
LED4
PWM
VBAT
LED3
LED4
1 μ F
VREG
LED5
1 μ F
VREG
LED5
GND GND GND GND TEST ISETH ISETL LED6
GND GND GND GND TEST ISETH ISETL LED6
24k ?
Each 20mA
24k ?
Each 20mA
Figure 41. 10 series x 6parallel Hi current 20mA setting
Current driver PWM application
Figure 42. 10 series x 4parallel Hi current 20mA setting
Current driver PWM application
* Please select the capacitor which the little bias fluctuation.
Battery
Battery
10 μ F
4.7 μ H
10LED x 6parallel
10 μ F
4.7 μ H
10LED x 6parallel
2.2 μ F *
2.2 μ F *
RTR020N05
100m ?
SW
SENSP
FAILSEL
VDET
RTR020N05
100m ?
SW
SENSP
FAILSEL
VDET
SENSN
SENSN
Power
ON/OFF
RSTB
Power
ON/OFF
RSTB
PWMPOW
LED1
PWMPOW
LED1
200Hz
PWM
PWMDRV
LED2
LED3
200Hz
PWM
PWMDRV
LED2
LED3
LED5
LED5
1 μ F
VBAT
LED4
VREG
GND GND GND GND TEST ISETH ISETL LED6
24k ?
Each 20mA
2.7V to 5.5V
1 μ F
VBAT
LED4
VREG
GND GND GND GND TEST ISETH ISETL LED6
24k ?
Each 20mA
Figure 43. 10 series x 6parallel LED current
20mA setting
Figure 44. Non-used Inside REG or operating
under 5V application
Power control PWM application
* Please select the capacitor which the little bias fluctuation.
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 2.7 to 5.5V, short VBAT and VREG, and put the voltage to VREG
FAILSEL, PWMDRV = Connect to GND in case of fixing at L level.
Connect to VREG of IC or the power supply of more than 1.4V in case of fixing at H level.
LED1-6 = When each LED driver are not used, connect to GND of IC
GND = Each GND is connecting inside IC, but, connect to GND of all board
RSTB = RSTB is used as a power supply of internal circuit.
So, you mustn’t input RSTB voltage with pull up resistor of several k ? .
And, please care about the relation between VBAT and RSTB enough.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
23/32
TSZ02201-0G3G0C400170-1-2
03.Dec.2012 Rev.001
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