LNBH26S集成電路（IC）的特殊用途穩(wěn)壓器規(guī)格書PDF中文資料

LNBH26S屬于集成電路（IC）的特殊用途穩(wěn)壓器。由意法半導(dǎo)體集團制造生產(chǎn)的LNBH26S特殊用途穩(wěn)壓器該系列產(chǎn)品用于電源控制、某種形式的轉(zhuǎn)換，適用于特定的復(fù)雜應(yīng)用。因此，各種產(chǎn)品特性集差異較大，包括空燃比傳感器接口、汽車交流發(fā)電機電壓調(diào)節(jié)、DDR 端接、液體透鏡控制、摩托車轉(zhuǎn)向信號控制、熱電 (peltier) 冷卻器控制、壓電觸覺控制、閥門控制、小型發(fā)動機管理等。

Features

? Complete interface between LNB and I2C bus

? Built-in DC-DC converter for single 12 V supply operation and high efficiency

(typ. 93 @ 0.5 A)

? Selectable output current limit by external resistor

? Compliant with main satellite receiver output voltage specification (15

programmable levels)

? Accurate built-in 22 kHz tone generator suits widely accepted standards

? 22 kHz tone waveform integrity guaranteed at no-load condition as well

? Low drop post regulator and high efficiency step-up PWM with integrated power

NMOS allowing low power losses

? LPM function (low power mode) to reduce dissipation

? Overload and overtemperature internal protection with I2C diagnostic bits

? LNB short-circuit dynamic protection

? +/- 4 kV ESD tolerant on output power pins

Description

Intended for analog and digital dual satellite receivers/Sat-TV, and Sat-PC cards, the

LNBH26S is a monolithic voltage regulator and interface IC, assembled in QFN24 4 x

4 specifically designed to provide the 13/18 V power supply and the 22 kHz tone

signaling to the LNB down-converter in the antenna dishes or to the multi-switch box.

In this application field, it offers a complete solution for dual tuner satellite receivers

with extremely low component count, low power dissipation together with simple

design and I2C standard interfacing.

Applications

? STB satellite receivers

? TV satellite receivers

? PC card satellite receivers