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LNBH29 bảng dữ liệu(PDF) 21 Page - STMicroelectronics

tên linh kiện LNBH29
Giải thích chi tiết về linh kiện  LNB supply and control IC with step-up and I²C interface
PDF  31 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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LNBH29 bảng dữ liệu(HTML) 21 Page - STMicroelectronics

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LNBH29
Electrical characteristics
TJ from 0 to 85 °C, VI = 12 V.
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Eff DC/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 (LPD)
thresholds
VLP threshold rising
7.2
V
VLP threshold falling
6.7
VIL
DSQIN, pin logic LOW
0.8
V
VIH
DSQIN, pin logic HIGH
2
V
IIH
DSQIN, pin input current
VIH = 5 V
15
µA
IOBK
Output backward current
All VSELx=0 V, VOBK=30 V
-3
-6mA
ISINK
Output low-side sink current
VOUT forced at VOUT_nom + 0.1 V
50
mA
ISINK_TIME-
OUT
Low-side sink current timeout
VOUT forced at VOUT_nom + 0.1 V
PDO I²C bit is set to “1” after this time
has elapsed
10
ms
IREV
Max. reverse current
VOUT forced at VOUT_nom + 0.1 V,
after PDO bit is set to “1”
(ISINK_TIME-OUT has elapsed)
2mA
TSHDN
Thermal shutdown threshold
150
°C
T
SHDN
Thermal shutdown hysteresis
15
°C
1.
In applications where (VCC - VOUT) > 1.3 V, the increased power dissipation inside the integrated LDO must be taken into
account in the application thermal management design.
2.
Guaranteed by design.
3.
Only for type LNBH29E.
4.
External signal maximum voltage for which the EXTM function is guaranteed.
Table 9. Electrical characteristic (continued)
Table 10. I²C electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VIL
Low level input voltage
SDA, SCL
0.8
V
VIH
High level input voltage
SDA, SCL
2
V
IIN
Input current
SDA, SCL, VIN = 0.4 to 4.5 V
-10
10
µA
VOL
Low level output voltage
SDA (open drain), IOL = 6 mA
0.6
V
FMAX
Maximum clock frequency
SCL
400
kHz



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