Datasheet

LNBH23 Electrical characteristics
Doc ID 13356 Rev 8 21/32
Refer to the typical application circuit, T
J
from 0 to 85 °C, EN=1,
VSEL=LLC=TEN=PCL=ITEST=TTX=AUX=0, R
SEL
=11 kΩ, DSQIN=LOW, V
I
= 12 V, I
O
= 50
mA, unless otherwise stated. Typical values are referred to T
J
= 25 °C. V
O
=V
oRX
pin voltage.
See software description section for I²C
access to the system register.
Note: If the output voltage is lower than the min. value the VMON I²C bit is set to 1.
When VSEL=0: If VMON=0 then V
oRX
>85% of V
oRX
typical; If VMON=1 then V
oRX
<95% of
V
oRX
typical.
When VSEL=1: If VMON=0 then V
oRX
>84% of V
oRX
typical; If VMON=1 then V
oRX
<96% of
V
oRX
typical.
T
J
from 0 to 85 °C, EN = 1, VSEL=LLC=TEN=PCL=TTX=0, DSQIN=LOW, V
I
= 12 V, unless
otherwise stated. See software description section for I²C access to the system register.
Note: If the output current is lower than the min. threshold limit the IMON I²C bit is set to 1. if the
output current is higher than the max threshold limit the IMON I²C bit is set to 0.
Refer to the typical application circuit, T
J
from 0 to 85 °C, EN = 1,
VSEL=LLC=TEN=PCL=ITEST=TTX=AUX=0, R
SEL
= 11 KΩ, DSQIN=LOW, V
I
= 12 V, I
O
=
50 mA, unless otherwise stated. Typical values are referred to T
J
=25°C. V
oRX
=V
oRX
pin
voltage. See software description section for I²C
access to the system register.
Note: If the 22 kHz tone parameters are lower or higher than the above limits the TMON I²C bit is
set to 1.
Table 11. Output voltage diagnostic (VMON bit) characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
V
TH-L
Diagnostic low threshold at
V
O
=13.4V
EN=1, VSEL=0
LLC=0
85 90 95 %
V
TH-L
Diagnostic low threshold at
V
O
=18.5V
EN=VSEL=1
LLC=0
84 90 96 %
Table 12. Minimum output current diagnostic (IMON bit) characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
I
TH
Minimum current diagnostic
threshold
ITEST=1, AUX=0/1 5 12 20
mA
ITEST=0, AUX=0/1 2.5 6 10
Table 13. 22 kHz tone diagnostic (TMON bit) characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
A
TH-L
Amplitude diagnostic low
threshold
DETIN pin AC coupled 200 300 400 mV
A
TH-H
Amplitude diagnostic high
threshold
DETIN pin AC coupled 900 1100 1200 mV
F
TH-L
Frequency diagnostic low
thresholds
DETIN pin AC coupled 13 16.5 20 kHz
F
TH-H
Frequency diagnostic high
thresholds
DETIN pin AC coupled 24 29.5 38 kHz