ST LNBH26PQR
| 基本資料 |
【基本資料】 
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|---|---|
| 產品特性 |
【產品特性】
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 receivers output voltage specification (15 programmable levels) ■ Accurate built-in 22 kHz tone generator suits widely accepted standards ■ 22 kHz tone waveform integrity guaranteed also at no load condition ■ Low drop post regulator and high efficiency step-up PWM with integrated power N-MOS 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 Dual LNBS supply and control IC with step-up and |
| 產品應用 |
【產品應用】 STB satellite receivers ■ TV satellite receivers ■ PC card satellite receivers |
| 文字介紹 |
【文字介紹】 Intended for analog and digital dual satellite receivers/Sat-TV, and Sat-PC cards, the LNBH26 is a monolithic voltage regulator and interface IC, assembled in QFN24 4x4 specifically designed to provide the 13/18 V power supply and the 22 kHz tone signalling 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. |