TLD1125EL_15 Datasheet, PDF (19/36 Pages) Marl International Limited – Basic LED Driver

Microcontroller
(e.g. XC866)
V_DDP = 5 V
OUT ^RSET/2
IN
R_SET/2
IN_SET
Current
adjust
Basic LED Driver
Status
ST
GND
Figure 12 Schematics IN_SET interface to µC, diagnosis via IN_SET pin
Microcontroller
(e.g. XC866)
OUT
IN
V_DDP = 5 V
R_SET
optional
IN_SET
Current
adjust
Basic LED Driver
Status
ST
GND
Figure 13 Schematics IN_SET interface to µC, diagnosis via ST pin
The resulting switching times are shown in Figure 14:
I_{IN_ SET}
I_OUT
100%
80%
t_{ON (IN_ SET )}
t_{OFF(IN _ SET)}
TLD1125EL
IN_SET Pin
t
20%
t
Figure 14 Switching times via IN_SET
Data Sheet
19
Rev. 1.0, 2013-08-08