Datasheet

LNBH21
10/20
ELECTRICAL CHARACTERISTICS FOR LNBP SERIES (T
J
= 0 to 85°C, EN=1, TTX=0/1, DSQIN=LOW,
LLC=TEN=PCL=VSEL=0, V
IN
=12V, I
O
=50mA, unless otherwise specified. See software description
section for I
2
C access to the system register).
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
IN
Supply Voltage I
O
= 750 mA TEN=VSEL=LLC=1 8 15 V
I
I
Supply Current EN=TEN=VSEL=LLC=1, NO LOAD 20 40 mA
EN=0 3.5 7
V
O
Output Voltage I
O
= 750 mA VSEL=1 LLC=0 17.3 18 18.7 V
LLC=1 18.7 19.5 20.3
V
O
Output Voltage I
O
= 750 mA VSEL=0 LLC=0 12.75 13.25 13.75 V
LLC=1 13.75 14.25 14.75
∆V
O
Line Regulation V
IN1
= 8 to 15V VSEL=0 5 40 mV
VSEL=1 5 60
∆V
O
Load Regulation VSEL=0 or 1, I
O
= 50 to 750mA 200 mV
I
MAX
Output Current Limiting ISEL = Floating or V > 3.3V 750 1000 mA
ISEL = GND 450 700
I
SC
Output Short Circuit Current VSEL=0 300 mA
VSEL=1 200
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 ms
f
TONE
Tone Frequency TEN=1 20 22 24 KHz
A
TONE
Tone Amplitude TEN=1 0.55 0.72 0.9 V
PP
D
TONE
Tone Duty Cycle TEN=1 40 50 60 %
t
r
,t
f
Tone Rise and Fall Time TEN=1 5 8 15 µs
G
EXTM
External Modulation Gain ∆V
OUT
/∆V
EXTM
, f = 10Hz to 50KHz 6
V
EXTM
External Input Voltage AC Coupling 400 mV
PP
Z
EXTM
External Modulation
Impedance
f = 10Hz to 50KHz 260 Ω
f
SW
DC/DC Converter Switching
Frequency
220 kHz
f
DETIN
Tone Detector Frequency
Capture Range
0.4Vpp sinewave 18 24 kHz
V
DETIN
Tone Detector Input
Amplitude
f
IN
=22kHz sinewave 0.2 1.5 V
PP
Z
DETIN
Tone Detector Input
Impedance
150 kΩ
V
OL
DSQOUT Pin Logic LOW Tone present I
OL
=2mA 0.3 0.5 V
I
OZ
DSQOUT Pin Leakage
Current
Tone absent V
OH
=6V 10 µA
V
IL
DSQIN Input Pin Logic
LOW
0.8 V
V
IH
DSQIN Input Pin Logic
HIGH
2V
I
IH
DSQIN Pins Input Current V
IH
=5V 15 µA
I
OBK
Output Backward Current EN=0, V
OBK
= 18V -6 -15 mA
T
SHDN
Temperature Shutdown
Threshold
150 °C
∆T
SHDN
Temperature Shutdown
Hysteresis
15 °C