LNBH23PPR STMicroelectronics, LNBH23PPR Datasheet - Page 17

• Manufacturer Part Number: LNBH23PPR
• Description: IC LNB SUPPLY/CTRL POWERSSO-24
• Manufacturer: STMicroelectronics

Specifications of LNBH23PPR

• Applications: Converter, Analog and Digital STB Receivers/SatTV
• Voltage - Input: 8 ~ 15 V
• Number Of Outputs: 1
• Voltage - Output: 13.4V, 18.5V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: PowerSSO-24
• Output Voltage: 25 V
• Output Current: 1000 mA
• Input Voltage: 8 V to 15 V
• Switching Frequency: 220 KHz
• Operating Temperature Range: - 25 C to + 125 C
• Mounting Style: Through Hole
• Duty Cycle (max): 57 %
• For Use With: 497-8717 - DEMO BOARD BASED ON LNBH23497-8336 - BOARD EVAL BASED ON LNBH23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6121-2

LNBH23
Table 6.
7.4
PCL
X
0
1
TTX
X
0
0
0
0
1
0
1
Truth table
X = don't care
All values are typical unless otherwise specified
Valid with TTX pin floating or to GND
Diagnostic received data (I²C read mode)
LNBH23 can provide to the MCU Master a copy of the diagnostic system register
information via I²C bus in read mode. The read mode is master activated by sending the
chip address with R/W bit set to 1. At the following master generated clocks bits, LNBH23
issues a byte on the SDA data bus line (MSB transmitted first). At the ninth clock bit the
master can:
●
●
Three bits of the register are read back as a copy of the corresponding write output voltage
register status (LLC, VSEL, EN), while, the other five bits convey diagnostic information
about the over-temperature (OTF), output voltage level (VMON), output over-load (OLF),
Minimum output current presence (IMON) and 22 kHz tone (TMON). In normal operation the
diagnostic bits are set to zero, while, if a failure is occurring, the corresponding bit is set to
one. At start-up all the bits are reset to zero.
TEN
X
0
1
Acknowledge the reception, starting in this way the transmission of another byte from
the LNBH23
No acknowledge, stopping the read mode communication
LLC
X
X
X
X
0
0
1
1
VSEL
0
1
0
1
X
X
X
X
EN
1
1
1
1
1
1
1
1
1
1
1
1
1
0
ITEST AUX
Doc ID 13356 Rev 7
X
X
0
1
X
0
0
0
0
1
V
V
V
V
V
22 kHz controlled by DSQIN pin (only if TTX=1)
22 kHz tone output is always activated
V
OFF
V
Pulsed (Dynamic) current limiting is selected
Static current limiting is selected
Minimum output current diagnostic threshold = 6mA
typ.
Minimum output current diagnostic threshold = 12mA
typ.
Power block disabled
oRX
oRX
oRX
oRX
oRX
oRX
oRX
= 13.4V, V
= 18.5V, V
= 14.4V, V
= 19.5V, V
= 22V, V
output is ON, V
output is ON, V
UP
UP
UP
UP
UP
=22.75V, (V
=14.15V, (V
=19.25V, (V
=15.15V, (V
=20.25V, (V
LNBH23 software description
oTX
oTX
Function
Tone generator output is ON
Tone generator output is
UP
UP
UP
UP
UP
-V
-V
-V
-V
-V
oRX
oRX
oRX
oRX
oRX
=0.75V)
=0.75V)
=0.75V)
=0.75V)
=0.75V)
17/32