Datasheet > LNBH29EPTR

LNBH29EPTR

更新时间： 2024-11-25 01:03:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
31页	1443K
描述
STB satellite receivers

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LNBH29EPTR 数据手册

LNBH29

LNB supply and control IC with step-up and I²C interface

Datasheet - production data

 Low-drop post regulator and high efficiency

step-up PWM with integrated power N-MOS

allowing low power losses

 Overload and overtemperature internal

protection with I²C diagnostic bits

 LNB short-circuit dynamic protection

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

Applications

QFN16 (4x4) / (3x3)

 STB satellite receivers

 TV satellite receivers

 PC card satellite receivers

Features

Description

 Complete interface between LNB and I²C bus

Intended for analog and digital satellite

 Built-in DC-DC converter for single 12 V supply

operation and high efficiency (typ. 93% @

0.5 A)

receivers/Sat-TV and Sat-PC cards, the LNBH29

series is a monolithic voltage regulator and

interface IC, assembled in QFN16 (3x3) and

QFN16 (4x4) specifically designed to provide the

13 / 18 V power supply and the 22 kHz tone

signaling to the LNB down-converter in the

antenna dish or to the multi-switch box. In this

application field, it offers a complete solution with

extremely low component count, low power

dissipation together with a simple design and I²C

standard interfacing.

 Selectable output current limit by external

resistor

 Compliant with main satellite receiver output

voltage specifications

 Accurate built-in 22 kHz tone generator suits

widely accepted standards

 EXTM pin, auxiliary 22 kHz modulation input

(LNBH29E) extends design flexibility

 22 kHz tone waveform integrity guaranteed

also at no load condition

Table 1. Device summary

Order codes

Packages

Packaging

LNBH29PTR

LNBH29EPTR

LNBH29QTR

LNBH29EQTR

QFN16 (3x3)

QFN16 (4x4)

Tape and reel

March 2013

DocID023065 Rev 3

1/31

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...31

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