lnbk20 STMicroelectronics, lnbk20 Datasheet - Page 5

• Manufacturer Part Number: lnbk20
• Description: Lnb Supply And Control Voltage Regulator Parallel Interface
• Manufacturer: STMicroelectronics

LNBK20
Table 1.
SYMBOL
EXTM
CEXT
LNBB
ENT
OLF
LLC
MI
Master input
22KHz tone
Output port
Line length
Pin description for PowerSO-20
modulator
compens.
Over load
capacitor
External
External
(1V typ)
NAME
enable
flag
Logic control input: see
truth table
Timing capacitor used
by the dynamic
overload protection.
Typical application is
4.7µF for a 1200ms
cycle
External modulation
input. Needs DC
decoupling to the AC
source. if not used, can
be left open.
Logic control input: see
truth table
Logic output (open
collector). Normally in
HIGH IMPEDANCE,
goes LOW when
current or thermal
overload occurs
In stand-by mode, the
voltage on MI is routed
to LNBA pin. Can be
left open if bypass
function is not needed
See truth tables for
voltage and port
selection
FUNCTION
20CR 20PD 10SP 11SP 12SP 13SP 14SP 15SP 16SP
10
11
12
13
14
15
9
13
14
15
16
17
18
19
PIN NUMBER vs SALES TYPE (LNBP)
NA
NA
NA
NA
10
7
8
NA
NA
NA
10
7
8
9
NA
NA
NA
10
7
8
9
NA
NA
NA
10
7
8
9
Pin configuration
NA
NA
NA
10
7
8
9
NA
NA
NA
10
7
8
9
NA
NA
NA
10
5/25
7
8
9