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LNBH25S 数据表(PDF) 13 Page - STMicroelectronics

部件名 LNBH25S
功能描述  LNB supply and control IC with step-up and IC interface
PDF  37 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LNBH25S 数据表(HTML) 13 Page - STMicroelectronics

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LNBH25S
Pin configuration
DocID026736 Rev 2
13/37
3
Pin configuration
Figure 5: Pin connection (top view)
Table 2: Pin description
Pin
Symbol
Name
Pin function
2
FLT
FLT
Open drain output for IC fault conditions. It is set low in
case of overload (OLF bit) or overheating status (OTF
bit) or power not good (PNG) is detected. To be
connected to pull-up resistor (5 V max.)
3
LX
NMOS drain
Integrated N-channel power MOSFET drain
4
PGND
Power ground
DC-DC converter power ground. To be connected
directly to exposed pad
6
ADDR
Address setting
Two I²C bus addresses available by setting the address
pin level voltage. See Table 16: "Address pin
characteristics"
7
SCL
Serial clock
Clock from I²C bus
8
SDA
Serial data
Bi-directional data from/to I²C bus
9
ISEL
Current
selection
The resistor “RSEL” connected between ISEL and GND
defines the linear regulator current limit threshold. Refer
to Section 2.6: "Output current limit selection" and ISET
bit description in Table 9: "Data 3 (read/write register.
Register address = 0X4)"
15
GND
Analog ground
Analog circuit ground. To be connected directly to the
exposed pad
16
VBYP
Bypass
capacitor
Needed for internal pre-regulator filtering. The VBYP
pin connects an external ceramic capacitor. Any
connection of this pin to external current or voltage
sources may cause permanent damage to the device
DSQOUT DSQIN/
EXTM
VUP
DETIN
NC
VOUT
ADDR
1
2
3
4
5
6
18
17
16
15
14
13
7
8
9
12
11
10
19
20
21
22
23
24
GND
NC
VCC
PGND
FLT
NC
LX
SDA
ISEL
NC
NC
NC
NC
VBYP
BPSW
NC
SCL
1
2
3
4
5
6
18
17
16
15
14
13
7
8
9
12
11
10
19
20
21
22
23
24
GIPG0907141409LM



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