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| TLD5097EL_15 Datasheet, PDF (28/41 Pages) Infineon Technologies AG – Multitopology LITIX Power DC/DC Controller IC | |||
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Infineon® LITIX⢠Power
TLD5097EL
Analog Dimming
VREF
[V]
typ. 300mV
100 mV
1.6V
Analog Dimming Feature Enabled
I LED
=
VSET â 0.1V
5 * RFB
Analog Dimming
Disabled
I LED
= VREF
RFB
VSET
[V]
Figure 10-1 Basic relationship between VREF and VSET Voltage
ILED
VREF
RFB
FBL
7
IFBL
FBH
6
IFBH
R2
R1
VREF_offset
+
-
Feedback Voltage
Error Amplifier
VOUT
Vint
ISET
n*ISET
VBandgap = 1.6V
++
-
ISET
SET
10
VSET
R3
COMP
8
CCOMP
RCOMP
100mV
GND
12
Figure 10-2 Concept Drawing Analog Dimming
Data Sheet
28
Revision 1.0
2015-03-12
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