LNBH25L STMicroelectronics, LNBH25L Datasheet - Page 9

• Manufacturer Part Number: LNBH25L
• Description: LNB supply and control IC with step-up and IA?C interface
• Manufacturer: STMicroelectronics

LNBH25L
3
Table 2.
2,15, 18, 19,
Pin n°
23
16
17
20
21
3
4
6
7
8
9
Pin configuration
Figure 5.
Pin description
Symbol
P-GND
ADDR
V
ISEL
GND
SCL
SDA
BYP
V
V
LX
OUT
CC
UP
Bypass capacitor
Current selection
LNB output port
Pin connections (top view)
Step-up voltage
Address setting
Analog ground
1
2
3
4
5
6
Power ground
N-MOS drain
Supply input
Serial clock
Serial data
PGND
ADDR
GND
Name
NC
NC
LX
SCL
NC
24
7
GND
SDA
23
Integrated N-channel Power MOSFET drain.
DC-DC converter power ground. To be connected directly to the
Epad.
Two I²C bus addresses available by setting the address pin level
voltage. See
Clock from I²C bus.
Bi-directional data from/to the I²C bus.
The resistor “RSEL” connected between ISEL and GND defines the
linear regulator current limit threshold. Refer to
Analog circuits ground. To be connected directly to the Epad.
Needed for internal pre-regulator filtering. The BYP pin is intended
only to connect an external ceramic capacitor. Any connection of
this pin to external current or voltage sources may cause permanent
damage to the device.
8 to 16 V IC DC-DC power supply.
Output of the integrated very low drop linear regulator. See
for voltage selection and description.
Input of the linear post-regulator. The voltage on this pin is
monitored by the internal step-up controller to keep a minimum
dropout across the linear pass transistor.
Doc ID 022634 Rev 2
8
DSQIN
LNBH25L
ISEL
22
9
Table 15
VUP
NC
21
10
VOUT
NC
20
11
.
GND
NC
19
12
Pin function
VBYP
GND
GND
VCC
NC
NC
AM10461v1
18
17
16
15
14
13
Section 2.4
Pin configuration
.
Table 13
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