LP3950 Datasheet, PDF (20/38 Pages) National Semiconductor (TI) – Color LED Driver with Audio Synchronizer

LP3950
SNVS331C – NOVEMBER 2004 – REVISED APRIL 2013
www.ti.com
RGB Driver Characteristics
(R1, G1, B1, R2, G2, B2 outputs). Limits in standard typeface are for T_J = +25°C. Limits in boldface type apply over the
operating ambient temperature range (−40°C ≤ T_A ≤ +85°C).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
R_DS-ON
I_LEAKAGE
t_SMAX
t_SMIN
t_SRES
t_START/STOP
Duty
ON Resistance
Off State Leakage Current
Maximum Slope Period
Minimum Slope Period
Slope Resolution
Start/Stop Resolution
Duty Step Size
V_FB = 5.0V, LED driver off
At Maximum Duty Setting
At Maximum Duty Setting
At Maximum Duty Setting
Cycle 1.0s
3.5
6.0
Ω
0.03
1.0
µA
0.93
s
31
ms
62
ms
1/16
s
1/16
t_BLINK
D_CYCF
D_CYC
D_RESF
D_RES
f_PWMF
f_PWM
Blinking Cycle Accuracy
Duty Cycle Range
Duty Cycle Range
Duty Resolution
Duty Resolution
PWM Frequency
PWM Frequency
EN_FLASH = 1
EN_FLASH = 0
EN_FLASH = 1 (4-bit)
EN_FLASH = 0 (4-bit)
EN_FLASH = 1
EN_FLASH = 0
−6
±3
+6
%
0
99.6
%
0
33.2
%
6.64
%
2.21
%
20
kHz
6.67
kHz
20
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