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LNBH25LS 数据表(PDF) 23 Page - STMicroelectronics

部件名 LNBH25LS
功能描述  LNB supply and control IC with step-up and I²C interface
PDF  30 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LNBH25LS 数据表(HTML) 23 Page - STMicroelectronics

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LNBH25LS
Electrical characteristics
DocID026753 Rev 3
23/30
8
Electrical characteristics
Refer to Section 5: "Typical application circuits", TJ from 0 to 85 °C, all data 1..4 register
bits set to 0 unless VSEL1 = 1, R
SEL = 16.2 kΩ, DSQIN = LOW, VIN = 12 V, IOUT = 50 mA,
unless otherwise stated. Typical values are referred to TJ = 25 °C. VOUT = VOUT pin
voltage. See software description section for I²C access to the system register Section 6:
"I²C bus interface".
Table 12: Electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VIN
Supply voltage (1)
8
12
16
V
IIN
Supply current
IOUT = 0 mA
6
mA
22 kHz tone enabled
(TEN=1), DSQIN = high,
IOUT= 0 mA
10
mA
VSEL1=VSEL2=
VSEL3=VSEL4=0
1
mA
VOUT
Output voltage total
accuracy
Valid at any VOUT selected
level
-3.5
+3.5
%
VOUT
Line regulation
VIN = 8 to 16 V
40
mV
VOUT
Load regulation
IOUT from 50 to 750 mA
75
100
ILIM
Output current limiting
thresholds
RSEL = 16.2 kΩ
500
750
mA
RSEL = 22 kΩ
350
550
ISC
Output short-circuit current
RSEL = 16.2 kΩ
350
mA
SS
Soft-start time
VOUT from 0 to 13 V
4
ms
SS
Soft-start time
VOUT from 0 to 18 V
6
ms
T13-18
Soft transition rise time
VOUT from 13 to 18 V
1.5
ms
T18-13
Soft transition fall time
VOUT from 18 to 13 V
1.5
ms
TOFF
Dynamic overload
protection OFF time
PCL=0, output shorted
900
msVPP
TON
Dynamic overload
protection ON time
PCL = 0, output shorted
TOFF/10
ATONE
Tone amplitude
DSQIN=high, EXTM=0,
TEN=1
IOUT from 0 to 750 mA
CBUS from 0 to 750 nF
0.55
0.675
0.8
FTONE
Tone frequency
DSQIN=high, EXTM=0,
TEN=1
IOUT from 0 to 500 mA
CBUS from 0 to 750 nF
20
22
24
kHz
DTONE
Tone duty cycle
43
50
57
%
tr, tf
Tone rise or fall time (2)
5
8
15
µs
EffDC/DC
DC-DC converter efficiency
IOUT = 500 mA
93
%
FSW
DC-DC converter switching
frequency
440
kHz
UVLO
Undervoltage lockout
thresholds
UVLO threshold rising
4.8
V
UVLO threshold falling
4.7
VLP
Low power diagnostic
VLP threshold rising
7.2
V



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