LNBP20集成电路（IC）的特殊用途稳压器规格书PDF中文资料

LNBP20属于集成电路（IC）的特殊用途稳压器。由意法半导体集团制造生产的LNBP20特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。

描述 Description

Intended for analog and digital satellite receivers, the LNBP 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 regulator 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 device will limit at 3 mA (max) the backward current that could flow from LNBA and LNBB output pins to GND. (See continuous description).

Feature summary

■ Complete interface for two LNBs remote supply and control

■ LNB selection and stand-by function

■ Built-in tone oscillator factory trimmed at 22KHz

■ Fast oscillator start-up facilitates DiSEqCTM encoding

■ Two supply inputs for lowest dissipation

■ Bypass function for slave operation

■ LNB short circuit protection and diagnostic

■ Auxiliary modulation input extends flexibility

■ Cable length compensation

■ Internal over temperature protection

■ Backward current protection