LM3463_12 Datasheet, PDF (10/40 Pages) Texas Instruments – LM3463 Dynamic Headroom Controller with Thermal Control Interface and Individual Channel Dimming Control

LM3463
SNVS807 – MAY 2012
www.ti.com
Typical Performance Characteristics
All curves taken at V_IN = 48V with configuration in typical application for driving twelve power LEDs with six output channels
active and 350 mA output current per channel. T_A = 25°C, unless otherwise specified.
V_SEn
vs
V_SEn
vs
Temperature, V_IOUTADJ=V_REF
Temperature, V_IOUTADJ=0.5 V_REF
0.203
103.0
0.202
102.5
102.0
0.201
0.200
0.199
0.198
VIOUTADJ= VREF
CH0
CH1
CH2
CH3
CH4
CH5
-40 -20 0 20 40 60 80 100 120 140
TA(°C)
Variation of V_SEn
vs
Temperature, V_IOUTADJ=V_REF
0.8
101.5
101.0
100.5
100.0
99.5 ^{VIOUTADJ=0.5*VREF}
CH0
CH2
CH3
CH4
CH5
99.0
-40 -20 0 20 40 60 80 100 120 140
TA(°C)
Variation of V_SEn
vs
Temperature, V_IOUTADJ=0.5 V_REF
1.5
0.6
VIOUTADJ=VREF
0.4
0.2
1.0 ^{VIOUTADJ=0.5*VREF}
0.5
0.0
0.0
-0.2
CH0
-0.4
CH1
CH2
CH3
-0.6
CH4
CH5
-0.8
-40 -20 0 20 40 60 80 100 120 140
TA(°C)
CH-CH Variation of V_SEn
vs
Temperature, V_IOUTADJ=V_REF
0.29
0.26
0.24
0.22
0.20
0.18
0.16
0.15
0.12
VIOUTADJ=VREF
0.10
-40 -20 0 20 40 60 80 100 120 140
TA(°C)
-0.5
CH0
CH1
CH2
-1.0
CH3
CH4
CH5
-1.5
-40 -20 0 20 40 60 80 100 120 140
TA(°C)
CH-CH Variation of V_SEn
vs
Temperature, V_IOUTADJ=0.5 V_REF
0.56
0.50
0.45
0.40
0.35
0.30
0.25
VIOUTADJ=0.5*VREF
0.20
-40 -20 0 20 40 60 80 100 120 140
TA(°C)
10
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