Datasheet > LNBH26L

LNBH26L

更新时间： 2024-11-25 01:21:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
28页	944K
描述
Selectable output current limit by external resistor

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LNBH26L 数据手册

LNBH26L

Dual LNBS supply and control IC with step-up and I²C interface

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 (8 programmable levels)

QFN24 (4x4 mm)

■ 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

Description

Intended for analog and digital DUAL satellite

receivers/Sat-TV, Sat-PC cards, the LNBH26L 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 an extremely

low component count and low power dissipation

together with simple design and I²C standard

interfacing.

■ Overload and overtemperature internal

protection with I²C diagnostic bits

■ LNB short-circuit dynamic protection

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

Applications

■ STB satellite receivers

■ TV satellite receivers

■ PC card satellite receivers

Table 1.

Device summary

Order code

Package

Packaging

LNBH26LPQR

QFN24 (4x4)

Tape and reel

March 2012

Doc ID 022876 Rev 1

1/28

www.st.com

12 3 4 5 6 7...28

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LNBH26LPQR	STMICROELECTRONICS	获取价格	Selectable output current limit by external resistor
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