LNBH23L STMicroelectronics, LNBH23L Datasheet - Page 4

• Manufacturer Part Number: LNBH23L
• Description: LNB supply and control IC with step-up and I2C interface
• Manufacturer: STMicroelectronics

Block diagram
1
Figure 1.
4/25
P-GND
P-GND
DSQIN
DSQIN
EXTM
EXTM
VoRX
VoRX
VoTX
VoTX
Vup
Vup
Vup
Vup
Vup
Vup
LX
LX
Block diagram
Block diagram
Rsense
Rsense
TTX
TTX
VSEL
VSEL
EN
EN
Linear Post-reg
Linear Post-reg
+Protections
+Protections
+Diagnostics
+Diagnostics
FB
FB
ISEL
ISEL
22kHz
22kHz
Oscill .
Oscill .
Doc ID 15335 Rev 4
. .
.
. .
. .
.
. .
TTX
TTX
VOUT Control
VOUT Control
A-GND
A-GND
VSEL
VSEL
TTX
TTX
TEN
TEN
ADDR
ADDR
I²C OLF and OTF
I²C OLF and OTF
LNBH23L
LNBH23L
I²C interface
I²C interface
Diagnostics
Diagnostics
SDA SCL
SDA SCL
Pull Down
Pull Down
Controller
Controller
V
V
CC
CC
Preregulator
Preregulator
+U.V.lockout
+
+
+
+U.V.lockout
+
+
+
+P.ON reset
+P.ON reset
Byp
Byp
EN
EN
V
V
CC-L
CC-L
PDC
PDC
LNBH23L