yb1509 YOBON TECHNOLOGIES,INC., yb1509 Datasheet
yb1509
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yb1509 Summary of contents
Page 1
... LEDs back-lighting for large LCD panel. It can drive LEDs in series or 18 LEDs in parallel/series configuration. The wide application VIN range makes YB1509 suitable for many types of battery applications such as Li-ions, Alkaline, or Sealed Lead Acid batteries. The adjustable inductor current optimizes the performance for different output drive capability by an external resistor ...
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... No connect Set inductor current. SET 8 LX Switch pin, connect to external inductor. Ordering Information Order Number Package Type YB1509 YB1509 MRev.1.1 High-Power White LED Driver 1509 Figure 2. Pin configuration Description Supplied as MSOP-8 2500 units Tape & Reel www ...
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... CE,SAT LX Leakage Current EN Logic Low Level EN Logic High Level EN Input Bias Current EN Input Bias Current I Source Current SET Inductor Peak Current YB1509 MRev.1.1 High-Power White LED Driver Recommended Operating Conditions Input Supply Voltage.............................. 2.2V to 16V Operating Temperature..................... -40℃ to +85℃ Conditions V =1.23V ...
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... VIN LX EN YB1509 Bypass FB I SET 10nF GND 1K Figure 5. 2 Legs of 6 LEDs in a Series CH1: LX CH2: Inductor Current CH3: V Figure 7. Typical Switching Waveform YB1509 MRev.1.1 High-Power White LED Driver SL12 V IN 10µF 16V 4.7µF 35V LX Bypass 10nF ...
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... FB pin to GND using: LED’s brightness is accomplished by applying a PWM signal with a frequency range between 100Hz and 50KHz to the EN pin. Inductor Current Set Using a resistor connected from I GND is able to set inductor current. An 8µA current source is coming out of the YB1509 www.yobon.com.tw YB1509 Cout Q1 60O HM ...
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... Choose a reverse breakdown of the schottky diode large than the output voltage. Thermal Consideration: When YB1509 is set to handle high switch current dissipation and thus generating heat. Always beware the amount of power dissipated during operation. To resolve the ...
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... Trace connections made to the inductor and schottky diode Package Information YB1509 MRev.1.1 High-Power White LED Driver resistor should be short and wider for reducing power dissipation and increase overall efficiency. www.yobon.com.tw ...