LITEMAX DLF1858-A, User Manual

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LITEMA X Electronics Inc. Page 17
5 LED Driving Board Specifications
This specification is applied to LED converter unit for LED backlight.
5.1 Operating Characteristics
Item Symbol
Conditions
MIN. TYP. MAX. Unit
Remark
Input Voltage
Vin 10.0 12.0 14.0 V
Input Current
(Low Brightness) IinL
VIN=12V,Vadj=5V 0.0 ----- -----
mA
Input Current
(High Brightness)
IinH
VIN=12V,Vadj=0V
1.95 1.79 1.68
A
(1)
5.1.1.1.1 LED
Current
(Low Brightness)
IoutL
VIN=12V,Vadj=5V
0.0 ----- -----
Arms
LED Current
(High Brightness)
IoutH
VIN=12V,Vadj=0V
0.83 0.88 0.93
A
Working Frequency
Freq
VIN=12V,Vadj=0V
350 400 450 KHZ
Brightness Control
DC mode
Vadj Connection of
Voltage
0.2 ----- 4.8 V
Vadj
±5%
PWM mode
PWM
Connect to PWM
0 ----- 100 %
Max ratio
1:100
1:100
Freq
----- 200 ----- Hz
(2)
ON/OFF Control
Von
Normal Operation
2 ----- 5 V
Voff
Normal Operation
0 ----- 0.8 V
Output Voltage
Vout
VIN=12V,Vadj=0V
31.2 31.7 32.2 V
Efficiency
η
VIN=12V,Vadj=0V
90.7 91.3 92.2
％
(3)
Remark:
(1) this data is based on the testing result of practical input voltage, Iin is measured by related Vin.
(min, typ, max)
(2) Frequency can be adjusted in accordance with demand(120Hz minimum, or lights will be flickering)
(3)
η
max
= V
out(max)
*I
outH(max)
/V
in(max)
*I
inH(min)
η
min
= V
out(min)
*I
outH (min)
/V
in(min)
*I
inH(max)