YB1509 Datasheet, PDF (4/7 Pages) YOBON TECHNOLOGIES,INC. – High-Power White LED Driver

YB1509
High-Power White LED Driver
Typical Characteristics
.
VIN=3 to 6V
10µF
16V
33µH
VIN
EN
LX
Bypass
ISET
YB1509
FB
10nF
9.1K
GND
SL12
RFB
60OHM
VIN=5 to 8V
4.7µF
35V
10µF
16V
EN
Bypass
ISET
10nF
1K
22µH
SL12
VIN
YB1509
GND
LX
FB
RFB
60OHM
4.7µF
35V
Figure 3. 8 LEDs in a Series
VIN=8 to 14V
10µF
16V
10nF
EN
Bypass
ISET
1K
10µH
SL12
VIN
YB1509
GND
LX
FB
RFB1
60OHM
4.7µF
35V
RFB2
60OHM
Figure 4. 10 LEDs in a Series
VIN=8 to 14V
10µF
16V
10nF
EN
Bypass
ISET
1K
33µH
SL12
VIN
YB1509
GND
LX
FB
RFB1
60OHM
4.7µF
35V
RFB2
60OHM
Figure 5. 2 Legs of 6 LEDs in a Series
Figure 6. 2 Legs of 9 LEDs in a Series
CH1: LX CH2: Inductor Current CH3: V_OUT (18 LEDs)
Figure 7. Typical Switching Waveform
CH1: EN CH2: LX CH3: V_OUT (18 LEDs)
Figure 8. PWM Brightness Control by EN
YB1509 MRev.1.1
www.yobon.com.tw
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