Infineon OPTIREG TLS820D2ELVSE, Manual, Page: 8 / 17

2.2.3 Jumper settings TLS820D2ELVSE, TLS835D2ELVSE
Headers X9 (selectable output voltage)
The output voltage can be configured via X9.
Table 5 Header X9 options for selectable output voltage
X9 Function
SEL
↔
VOUT
7)
sets VOUT to 5 V
SEL
↔
GND sets VOUT to 3.3 V
Headers X12 (Reset timing selection)
Reset delay timing can be configured via X12.
Table 6 Header X12 options for reset delay timing
X12 Function
VD
↔
100nF
7)
Sets the reset delay time to typically 10 µs
VD
↔
1uF Sets the reset delay time to typically 28 µs
Headers X11 (Adjustable reset threshold )
Reset threshold can be configured via X11 and voltage divider R5, R6.
Table 7 Header X11 options for adjustable reset threshold
X11 Function
RADJ
↔
GND
7)
Sets the default reset threshold
RADJ
↔
DIV Sets a reset threshold between 2 V and 4.2 V (for 5 V output voltage), or between 2 V
and 2.75 V (for 3.3 V output voltage), depending on the voltage divider R5, R6
The undervoltage reset switching threshold can be adjusted according to the application’s requirements by
connecting an external voltage divider (R5, R6). For selecting the default threshold connect RADJ to GND.
With a voltage divider connected, the reset switching threshold
V
RT,low,new
is calculated according to the
following formula:
V
RT
,
low
,
new
= V
RADJ
,
th
R 5
R 6
+ 1
Equation 1
Header X10
Leave header X10 open as it is not relevant.
Default setting of the jumpers TLS820D2ELVSE, TLS835D2ELVSE
Figure 3 shows the default setting of the jumpers of the TLS820D2ELVSE, TLS835D2ELVSE demoboard.
7
Default setting.
OPTIREG
™
linear voltage regulator TLS8xxx2ELVxx demoboard
Z8F61720705
Demoboard
User manual 8 Rev. 1.1
2021-06-24