Datasheet

LNBH23 Electrical characteristics
Doc ID 13356 Rev 8 19/32
8 Electrical characteristics
Refer to the typical application circuit, T
J
= 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.
Table 8. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
I
Supply voltage I
O
=750mA, VSEL=LLC=1 8 12 15 V
I
I
Supply current
I
O
=0 7 15
mAEN=TEN=TTX=1, I
O
=0 20 40
EN=0 2
V
O
Output voltage
AUX=1; I
O
=50mA 22
V
V
SEL
=1 I
O
=750mA
LLC=0 17.8 18.5 19.2
LLC=1 18.8 19.5 20.2
V
SEL
=0 I
O
=750mA
LLC=0 12.8 13.4 14
LLC=1 13.8 14.4 15
V
O
Line regulation V
I
=8 to 15V
VSEL=0 5 40
mV
VSEL=1 5 60
V
O
Load regulation V
SEL
=0 or 1, I
O
from 50 to750mA 200 mV
13/18
T
R
- T
F
13/18V Rise and Fall transition
time by V
CTRL
pin
V
SEL
=LLC=1, V
CTRL
from LOW to
HIGH and vice versa, I
O
from 6 to
450mA, C
O
from 10 to 330nF
575 µs
I
MAX
Output current limiting
R
SEL
=11kΩ 750 1000
mA
R
SEL
= 22kΩ 300 600
I
SC
Output short circuit current V
SEL
=0/1, AUX=0/1 1000 mA
T
OFF
Dynamic overload protection
OFF time
PCL=0, Output shorted 900
ms
T
ON
Dynamic overload protection ON
time
PCL=0, Output shorted T
OFF
/10
F
TONE
Tone frequency DSQIN=HIGH or TEN=1, TTX=1 20 22 24 kHz
A
TONE
Tone amplitude
DSQIN=HIGH or TEN=1, TTX=1
I
O
from 0 to750mA
C
O
from 0 to 750nF
0.4 0.650 0.9 V
PP
D
TONE
Tone duty cycle DSQIN=HIGH or TEN=1, TTX=1 43 50 57 %
t
r
, t
f
Tone rise or fall time DSQIN=HIGH or TEN=1, TTX=1 5 8 15 µs
F
EXTM
EXTM frequency V
EXTM-H
=3.3V, V
EXTM-L
=0V,
(1)
20 22 24 kHz
Eff
DC-DC
DC-DC converter efficiency I
O
=750mA 93 %
F
SW
DC-DC converter switching freq. 220 kHz
F
DETIN
Tone detector freq. capture range 0.4V
PP
sine wave
(2)
19 22 25 kHz