LNBH21 データシートの表示（PDF） - STMicroelectronics
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LNBH21 Datasheet PDF : 20 Pages
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LNBH21
ELECTRICAL CHARACTERISTICS FOR LNBP SERIES (TJ = 0 to 85°C, EN=1, TTX=0/1, DSQIN=LOW,
LLC=TEN=PCL=VSEL=0, VIN=12V, IO=50mA, unless otherwise specified. See software description
section for I2C access to the system register).
Symbol
Parameter
Test Conditions
VIN Supply Voltage
IO = 750 mA TEN=VSEL=LLC=1
II Supply Current
EN=TEN=VSEL=LLC=1, NO LOAD
EN=0
VO Output Voltage
IO = 750 mA VSEL=1
LLC=0
LLC=1
VO Output Voltage
IO = 750 mA VSEL=0
LLC=0
LLC=1
∆VO Line Regulation
VIN1= 8 to 15V
VSEL=0
VSEL=1
∆VO Load Regulation
VSEL=0 or 1, IO = 50 to 750mA
IMAX Output Current Limiting
ISEL = Floating or V > 3.3V
ISEL = GND
ISC Output Short Circuit Current
VSEL=0
VSEL=1
tOFF Dynamic Overload
protection OFF Time
PCL=0
Output Shorted
tON Dynamic Overload
protection ON Time
PCL=0
Output Shorted
fTONE Tone Frequency
TEN=1
ATONE Tone Amplitude
TEN=1
DTONE Tone Duty Cycle
TEN=1
tr, tf Tone Rise and Fall Time TEN=1
GEXTM External Modulation Gain ∆VOUT/∆VEXTM, f = 10Hz to 50KHz
VEXTM External Input Voltage
AC Coupling
ZEXTM External Modulation
Impedance
f = 10Hz to 50KHz
fSW DC/DC Converter Switching
Frequency
fDETIN Tone Detector Frequency 0.4Vpp sinewave
Capture Range
VDETIN Tone Detector Input
Amplitude
fIN=22kHz sinewave
ZDETIN Tone Detector Input
Impedance
VOL DSQOUT Pin Logic LOW Tone present
IOL=2mA
IOZ DSQOUT Pin Leakage
Current
Tone absent
VOH = 6V
VIL DSQIN Input Pin Logic
LOW
VIH DSQIN Input Pin Logic
HIGH
IIH DSQIN Pins Input Current VIH = 5V
IOBK Output Backward Current EN=0,
VOBK = 18V
TSHDN Temperature Shutdown
Threshold
∆TSHDN Temperature Shutdown
Hysteresis
Min. Typ. Max. Unit
8
15
V
20
40
mA
3.5
7
17.3 18 18.7
V
18.7 19.5 20.3
12.75 13.25 13.75 V
13.75 14.25 14.75
5
40
mV
5
60
200 mV
750
1000 mA
450
700
300
mA
200
900
ms
tOFF/10
20
22
24
0.55 0.72 0.9
40
50
60
5
8
15
6
400
260
ms
KHz
VPP
%
µs
mVPP
Ω
220
kHz
18
24
kHz
0.2
1.5
VPP
150
kΩ
0.3
0.5
V
10
µA
0.8
V
2
V
15
µA
-6
-15 mA
150
°C
15
°C
10/20
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