Datasheet

0 4 8 12 16 20 24 28 32 36
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
I
IN
(mA)
V
IN
(V)
T
J
=125°C
T
J
=-40°C
T
J
=25°C
2 s/DIV
I
LED
(200mA/DIV)
V
DIM
(2V/DIV)
2 s/DIV
I
LED
(200mA/DIV)
V
DIM
(2V/DIV)
4 s/DIV
I
LED
(200mA/DIV)
V
DIM
(2V/DIV)
Typical Performance Characteristics www.ti.com
Figure 17. LED Current with PWM Dimming Figure 18. LED Current with PWM Dimming
V
DIM
Rising 16µs dimming pulse
(without COUT capacitor) (without COUT capacitor)
Figure 19. I
IN
vs. V
IN
Figure 20. LED Current with PWM Dimming
LED = open , DIM = open V
DIM
Falling
(without COUT capacitor)
8
AN-2208 TPS92550 450mA 36V LED Driver Micro-Module Evaluation Board SNVA640A–May 2012–Revised May 2013
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