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34844 Datasheet(PDF) 23 Page - Freescale Semiconductor, Inc

Part # 34844
Description  10 Channel LED Backlight Driver with Integrated Power Supply
PDF  37 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34844 Datasheet(HTML) 23 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
23
34844
TYPICAL PERFORMANCE CURVES (TA=25°C)
LOGIC COMMANDS AND REGISTERS
TYPICAL PERFORMANCE CURVES (TA=25°C)
Figure 5. Boost efficiency vs Input Voltage
Figure 6. Line Regulation, Vin Changing
85%
86%
87%
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90%
91%
92%
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Vin, volts
Fs = 600KHz
L=22uH, DCR=52mO
Schottky V12P10-E3/86A
COUT = 2x4.7µF, 2x2.2µF/100V
FPWM=600Hz, 100% duty
Load = 16 LEDs, 50mA/channel
VLED = 48V, ±1V /channel
50.00
50.05
50.10
50.15
50.20
50.25
50.30
50.35
50.40
50.45
50.50
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Vin, volts
Fs = 600KHz
L=22uH, DCR=52mO
Schottky V12P10-E3/86A
COUT = 2x4.7µF, 2x2.2µF/100V
FPWM=600Hz, 100% duty
Load = 16 LEDs, 50mA/channel
VLED = 48V, ±1V /channel



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