Product Summary

Intended for analog and digital satellite receivers, the LNBP12A is a monolithic linear voltage regulator, assembled in PowerSO-20 and PowerSO-10, specifically designed to provide the powering voltages and the interfacing signals to the LNB downconverter situated in the antenna via the coaxial cable. Since most satellite receivers have two antenna ports, the output voltage of the LNBP12A is available at one of two logic-selectable output pins (LNBA, LNBB). When the IC is powered and put in Stand-by (EN pin LOW), both regulator outputs are disabled to allow the antenna downconverters to be supplied/controlled by others satellite receivers sharing the same coaxial lines. In this occurrence the LNBP12A will limit at 3 mA (max) the backward current that could flow from LNBA and LNBB output pins to GND. (See continuous description).

Parametrics

LNBP12A absolute maximum ratings: (1)VI, DC Input voltage (VCC1, VCC2, MI): 28 V; (2)VO, Output voltage: -0.3 to 28 V; (3)IO, Output current (LNBA, LNBB): Internally Limited; (4)VI, Logic input voltage (ENT, EN OSEL, VSEL, LLC): -0.5 to 7 V; (5)ISW, Bypass switch current: 900 mA; (6)PD, Power dissipation at Tcase < 85: 14 W; (7)Tstg, Storage temperature range: -40 to +150℃; (8)Top, Operating junction temperature range: -40 to +125℃.

Features

LNBP12A features: (1)Complete interface for two LNBs remote supply and control; (2)LNB selection and stand-by function; (3)Built-in tone oscillator factory trimmed at 22KHz; (4)Fast oscillator start-up facilitates DiSEqCTM encoding; (5)Two supply inputs for lowest dissipation; (6)Bypass function for slave operation; (7)LNB short circuit protection and diagnostic; (8)Auxiliary modulation input extends flexibility; (9)Cable length compensation; (10)Internal over temperature protection; (11)Backward current protection.

Diagrams

LNBP12A block diagram

LNBP10
LNBP10

Other


Data Sheet

Negotiable 
LNBP10LPUR
LNBP10LPUR

STMicroelectronics

Linear Regulators - Standard LNB SUP/CTRL VLT REG

Data Sheet

0-2290: $0.41
2290-3000: $0.41
3000-5000: $0.40
5000-10000: $0.39
LNBP10SP-TR
LNBP10SP-TR

STMicroelectronics

Linear Regulators - Standard LNBP voltage reg

Data Sheet

0-1: $2.21
1-10: $1.98
10-100: $1.64
100-250: $1.48
LNBP11LPUR
LNBP11LPUR

STMicroelectronics

Linear Regulators - Standard LNB SUP/CTRL VLT REG

Data Sheet

0-2370: $0.40
2370-3000: $0.40
LNBP11SP-TR
LNBP11SP-TR

STMicroelectronics

Linear Regulators - Standard LNBP voltage reg

Data Sheet

Negotiable 
LNBP12SP-TR
LNBP12SP-TR

STMicroelectronics

Linear Regulators - Standard LNBP voltage reg

Data Sheet

0-320: $1.43
320-500: $1.25
500-600: $1.25
600-1000: $1.04