LP3952 Datasheet, PDF (24/46 Pages) National Semiconductor (TI) – 6-Channel Color LED Driver with Audio Synchronization

LP3952
SNVS518A – JULY 2007 – REVISED MARCH 2013
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RGB Driver Electrical Characteristics (R1, G1, B1, R2, G2, B2 Outputs)(1.65V ≤ V_DDIO ≤ V_DD1,2V)
(unless otherwise noted)
I_LEAKAGE
I_RGB
R_SW
f_RGB
Parameter
Test Condition
Min
Typ
Max
Units
R1, G1, B1, R2, G2, B2 pin
leakage current
0.1
1
μA
Maximum recommended sink
current
CC mode
SW mode
40
mA
50
mA
Accuracy @ 37mA
R_RGB=3.3 kΩ ±1%, CC mode
±5
%
Current mirror ratio
CC mode
1:100
RGB1 and RGB2 current
mismatch
I_RGB=37mA, CC mode
±5
%
Switch resistance
SW mode
2.5
5
Ω
RGB switching frequency
Accuracy proportional to internal 18.2
20
21.8
kHz
clock freq.
Output Current vs Pin Voltage (Current Sink Mode)
Figure 12.
Pin Voltage vs Output Current (Switch Mode)
Figure 13.
24
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