LNBH23 STMicroelectronics, LNBH23 Datasheet - Page 10

• Manufacturer Part Number: LNBH23
• Description: LNBs supply and control IC with step-up and I2C interface
• Manufacturer: STMicroelectronics

Specifications of LNBH23

• Single Input Supply Voltage: from 8 V to 15 V

Pin configuration
Table 2.
10/32
Pin n° for
1, 2, 3, 7,
8, 16, 17,
QFN32
23, 24,
25, 26,
31, 32
Epad
11
13
15
10
28
30
20
5
Pin n° for
PSSO-24
Pin description (continued)
3, 4, 5,
21, 24
Epad
11
13
15
10
23
18
2
7
DSQOUT
Symbol
VCTRL
P-GND
A-GND
ADDR
EXTM
Epad
ISEL
BYP
N.C.
Current selection
Address setting
DiSEqC output
Analog ground
Output voltage
Not connected
Power ground
Exposed pad
modulation
capacitor
External
By-pass
control
Name
Doc ID 13356 Rev 7
Not internally connected pins.
Open drain output of the tone decoder to the main
microcontroller for DiSEqC 2.0 data decoding. It is LOW
when tone is detected on DETIN pin.
External modulation logic input pin which activates the 22
kHz tone output on the V
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.
Two I²C bus addresses available by setting the Address pin
level voltage. See address pin characteristics
The resistor “RSEL” connected between ISEL and GND
defines the linear regulator current limit threshold by the
equation: Imax(typ.)=10000/ RSEL.
13V-18V linear regulator V
only with V
19.5V if LLC=1). If VCTRL=0 than V
or 1). Leave floating if not used. Do not connect to ground if
not used.
DC-DC converter power ground.
To be connected with power grounds and to the ground layer
through vias to dissipate the heat.
Analog circuits ground.
SEL
=1. If VCTRL=1 or floating V
oTX
Function
oRX
pin. Set to ground if not used.
switch control. To be used
oRX
=13.4V (LLC=either 0
oRX
Table 10
=18.5V (or
LNBH23