LP39542 Datasheet, PDF (28/58 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

ADJUSTMENT
WLED1-4[7:0]
WLED5-6[7:0]
0000 0000
0000 0001
0000 0010
0000 0011
…
…
1111 1101
1111 1110
1111 1111
Driver current,
mA (typical)
0
0.1
0.2
0.3
…
…
25.3
25.4
25.5
WLED Output Current vs. Voltage
Backlight Driver Electrical Characteristics
Symbol
I_MAX
I_leakage
I_WLED1
Parameter
Maximum Sink Current
Leakage Current
WLED1 Current tolerance
Conditions
I_WLED1 set to 12.8 mA (80H)
I_match1-4
I_match5-6
I_match1-6
Sink Current Matching
Sink Current Matching
Sink Current Matching
I_SINK = 13 mA, Between WLED1…4
I_SINK = 13 mA, Between WLED5…6
I_SINK = 13 mA, Between WLED1…6
Note: Matching is the maximum difference from the average.
30008538
Min Typical Max
21.3 25.5 29.4
0.03
1
10.52 12.8 14.78
-18
+16
0.2
0.2
0.3
Units
mA
μA
mA
%
%
%
%
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