LNBP21 STMicroelectronics, LNBP21 Datasheet - Page 9

• Manufacturer Part Number: LNBP21
• Description: LNBP SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE
• Manufacturer: STMicroelectronics

Table 5: Electrical Characteristics For LNBP Series (T
PCL=0, DSQIN=0, V
for I
Symbol
V
G
Z
A
D
V
Z
f
f
DETIN
V
I
t
TONE
DETIN
DETIN
V
TONE
t
EXTM
EXTM
V
f
V
MAX
I
t
TONE
EXTM
I
V
V
V
OFF
V
I
SW
I
ON
r
SC
OZ
LT1
V
V
2
IN
, t
IH
OL
LT
IN
IH
IL
O
O
C access to the system register)
O
O
f
Supply Voltage
LT1 Input Voltage
Supply Current
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Output Current Limiting
Output Short Circuit Current
Dynamic Overload
protection OFF Time
Dynamic Overload
protection ON Time
Tone Frequency
Tone Amplitude
Tone Duty Cycle
Tone Rise and Fall Time
External Modulation Gain
External Modulation Input
Voltage
External Modulation
Impedance
Loopthrough Switch Voltage
Drop (lt1 to LT2)
DC/DC Converter Switch
Frequency
Tone Detector Frequency
Capture Range
Tone Detector Input
Amplitude
Tone Detector Input
Impedance
DSQOUT Pin Logic LOW
DSQOUT Pin OFF State
Leakage Current
DSQIN Input Pin Logic
LOW
DSQIN Input Pin Logic
HIGH
DSQIN Pins Input Current
Parameter
IN
=12V, I
OUT
=50mA, unless otherwise specified. See software description section
I
I
I
I
V
VSEL=0 or 1 I
PCL=0
PCL=0
TEN=1
TEN=1
TEN=1
TEN=1
AC Coupling
f = 10Hz to 50KHz
EN=0,
19V
0.4Vpp sinewave
f
Tone present
Tone absent
V
O
O
O
O
IN
V
IN1
IH
=22kHz sinewave
= 500 mA TEN=VSEL=LLC=1
= 0mA TEN=VSEL=LLC=1
= 500 mA VSEL=1
= 500 mA VSEL=0
OUT
= 5V
=15 to 18V
/ V
EXTM
I
Output Shorted
Output Shorted
LT
Test Conditions
=300mA,
OUT
,
= 50 to 500mA
f = 10Hz to 40KHz
I
V
OL
OH
J
=2mA
= 0 to 85°C, EN=1, LLC=0, TEN=0, ISEL=0,
= 6V
V
MI
EN=1
EN=0
LLC=0
LLC=1
LLC=0
LLC=1
VSEL=0
VSEL=1
ISEL=1
ISEL=0
ISEL=1
ISEL=0
=12 or
Min.
17.3
12.5
0.55
400
500
0.2
20
40
18
8
5
2
t
OFF
Typ.
0.72
0.35
200
300
900
260
220
150
2.5
0.3
20
18
19
13
14
22
50
10
15
5
5
6
/10
Max.
18.7
13.5
200
550
650
400
0.9
0.6
1.5
0.5
0.8
15
20
40
40
60
24
60
15
24
10
5
LNBP21
mVpp
Unit
KHz
Vpp
kHz
kHz
Vpp
mA
mA
mV
mV
mV
mA
mA
mA
mA
ms
ms
k
%
V
V
V
V
V
V
V
V
V
V
A
A
s
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