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BD6583MUV-A
● Application example of Analog dimming
Control LED current to charged D/A voltage.
Show application example and typ control.
Please decide final value after you evaluated application, characteristic.
Battery
Datasheet
10 μ F
4 .7 μ H
2.2 μ F *
8 LED x 6 parallel
D/A
0.05V
LED current
19.4mA
RTR 020N0 5
SW
FAILSEL
VDET
0.2V
14.4mA
SENSP
51m ?
SENSN
0.4V
7.7mA
Power
ON/OFF
RSTB
PWMPOW
PW MDRV
LED1
LED2
0.5V
0.6V
0.7V
4.4mA
1.0mA
0mA
LED3
L ED5
1 μ F
VBAT
LED4
VREG
GND GND GND GND TEST ISETH ISETL L ED6
LED current =
I SET   voltage
470k ?
+
ISET voltage -D/A
24k ?
×800
470k ?
24k ?
Each 20m A
typ LED current =
0.6V
470k ?
+
0.6V-D/A
24k ?
×800
D/A
Figure 65. Analog style optical application
* Please select the capacitor which the little bias fluctuation.
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TSZ22111 ? 15 ? 001
29/32
TSZ02201-0G3G0C400180-1-2
03.Dec.2012 Rev.001
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