IADJ Pin Voltage (V)
L
ED Cu
rr
ent
(A)
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
D001
Performance Data and Typical Characteristic Curves
7
SLVUAR5 – May 2016
Copyright © 2016, Texas Instruments Incorporated
TPS92515HVEVM-749 High Current Buck LED Driver Evaluation Module
6.3
Analog Dimming
Figure 4. Output Current vs. IADJ Voltage 14-V Input, 2 LEDs
6.4
PWM Dimming Waveforms
Figure 5. 1% Duty Cycle 250 Hz PWM Dimming
Top = V
SW
, Middle = V
PWM
, Bottom = LED Current, Input Voltage = 14 V, 2 LEDs
