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HT7939A Datasheet(PDF) 6 Page - Holtek Semiconductor Inc

Part # HT7939A
Description  Performance White LED Driver
PDF  13 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT7939A Datasheet(HTML) 6 Page - Holtek Semiconductor Inc

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Rev. 1.00
6
April 19, 2012
HT7939A
Typical Performance Characteristics
Fig.1 HT7939A-1 W-LED Current V.S. Dimming (3S13P)
Fig.2 HT7939A-1 W-LED Current V.S. Dimming (3S10P)
Fig.3 HT7939A-2 W-LED Current V.S. Dimming (7S4P)
Fig.4 Efficiency V.S. Input Voltage
Fig.5 Feedback Voltage V.S. Input Voltage
Fig.6 HT7939A-1 3S10P Dimming=100Hz, D=50%,
VIN=5.0V, L=22mH, CIN=COUT=2.2mF
(CH1=VEN Signal, CH2=ILED Current)



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